MACHINIST 3rd SEM

 MACHINIST 3rd SEM MCQ QUESTION ANSWER

1 Which grinding machine is used for sharpening of cutters?

A Surface grinder 

B Tool and Cutter grinder 

C Pedestal grinder 

D Cylindrical grinder

Correct Answer:- B Tool and Cutter grinder 


2 Which material is used to make the base of tool and cutter grinding machine?

A Grey cast iron 

B Low carbon steel 

C Tool steel 

D Bronze

Correct Answer:- A Grey cast iron 


3 Which part mounted directly on the top of base in tool

cutter grinder?

A Column 

B Saddle 

C Table 

D Wheel

Correct Answer:- B Saddle 


4 What is marked as 'x'? 


A Centre gauge 

B Feeler gauge 

C Pitch gauge 

D Snap gauge

Correct Answer:- A Centre gauge


5 Where is tooth rest fitted in tool and cutter grinder? 

A Tooth rest attachment 

B In between centres 

C Tail stock 

D Column

Correct Answer:- A Tooth rest attachment 


Which is the shape of grinding wheel used for sharpening milling cutter and reamer?

A Disc 

B Straight cup 

C Flaring cup 

D Dish

Correct Answer:- C Flaring cup 


What is the use of work holding device? 

A Keep the work piece in a safe distance

B Keep the cutter in a safe distance

C Keep the work piece in position

D Keep the cutter in position

Correct Answer:- C Keep the work piece in position


How many number of swivelling movement is provided with universal vice?

A 2     B 3    C  4    D6

Correct Answer:- B 3 


Which tool is used to form the radius on grinding wheel for radius grinding attachment?

A H.S.S single point tool 

B Brazed single point tool 

C Diamond stick 

D H.C.S tool

Correct Answer:- C Diamond stick 


10 What is the use of a mandrel? 

A For guide the grinding wheel

B For hold the hollow cutters

C For support the wheel head

D For guide the table

Correct Answer:- B For hold the hollow cutters


11 What is the angular setting limit of an angular sine vice used in tool and cutter grinder?

A Upto 27° 

B Upto 55° 

C Upto 80° 

D Upto 120°

Correct Answer:- B Upto 55° 


12 Which attachment is used for grinding face mill up to 400mm dia?

A Universal vice 

B Motor drive arrangement

C Face mill grinding attachment

D Angular sine vice

Correct Answer:- C Face mill grinding attachment


13 What is the use of radius wheel turning attachment in tool and cutter grinder?

A Dress the wheel to the required radius up to 25mm

B Turn the work piece to any required shape

C Turn the work piece to a radius up to 12mm

D Dress the wheel to any required shape

Correct Answer:- A Dress the wheel to the required radius up to 25 mm


14 Which grinding machine is used for re-sharpening of single point tools, chisel, punches and drills?

A Surface grinder 

B Single purpose tool cutter grinder

C Cylindrical grinder 

D Universal tool and cutter grinder

Correct Answer:- B Single purpose tool cutter grinder


15 What is the maximum swiveling angle of wheel head on a tool cutter grind machine?

A 360°     B 120°     C 90°     D 47°

Correct Answer:- A 360°


16 Which part of the tool and cutter grinding machine on that wheel head is being mounted?

A Base 

B Saddle 

C Table 

D Column

Correct Answer:- D Column


17 What is the remedy to remove the black and shining face of grinding wheel?

A Changing of wheel 

B Truing of wheel 

C Dressing of wheel 

D Balancing of wheel

Correct Answer:- C Dressing of wheel 


18 Why centre gauge is provided on tool and cutter grinding?

A For centering the wheel spindle and cutter edges

B For align the table to the spindle axis

C For reduce the wheel speed

D For fast metal removal

Correct Answer:- A For centering the wheel spindle and cutter edges


19 Which part is used to support each individual tooth of cutter in correct position on tool and cutter grinder?

A Compound rest 

B Steady rest 

C Tool rest 

D Tooth rest

Correct Answer:- D Tooth rest


20 What happened if tool little clearance is provided on milling cutter?

A Chattering produced 

B No heat produced 

C Good surface finish 

D Bad surface finish

Correct Answer:- D Bad surface finish


21 What is the recommended range of secondary clearance angle on milling cutter?

A 1° to 3°    B 4° to 7°    C 8° to 12°    D 15° to 25°

Correct Answer:- D 15° to 25°


22 What is the recommended range of clearance angle for H.S.S cutter while milling cast iron?

A 28° to 37°      B 15° to 25°     C 4° to 7°     D 1° to 5°

Correct Answer:- C 4° to 7° 


23 Which work holding device is used on tool and cutter grinder for grinding the periphery and bevelled edges on it?

A Face mill grinding attachment

B Taper turning attachment

C Slotting attachment 

D Grinding attachment

Correct Answer:- A Face mill grinding attachment


24 Which attachment is designed for holding work to any desired compound angle?

A Universal vice 

B Angular sine vice 

C Positive indexing attachment

D Motor drive arrangement

Correct Answer:- A Universal vice 


25 Which grinding attachment is specially designed for enable the work up to a length of 750 mm?

A RH and LH extension tail stock

B Universal vice 

C Positive indexing attachment

D Tap relieving sharpening attachment

Correct Answer:- A RH and LH extension tail stock


26 Which attachment is designed for grinding the land of a tap?

A Radius wheel turning attachment

B Angular sine vice 

C Tap relieving and Sharpening attachment

D Milling attachment

Correct Answer:- C Tap relieving and Sharpening attachment


27 Which attachment is used for precision grinding of angular parts?

A Motor drive attachment 

B Positive indexing attachment

C Universal vice 

D Angular sine vice

Correct Answer:- D Angular sine vice


28 Which letter used for represent for datum for indicating geometrical tolerance?

A G        B M         C B         D A

Correct Answer:- D A


28 What is the definition of "GD and T'? 

A Geometrical Deviations and Tolerances

B Geometrical Dimensioning and Tolerances

C Geometrical Drawing and Techniques

D Geometrical Drawing and Tolerances

Correct Answer:- B Geometrical Dimensioning and Tolerances


29 What is the symbol used for to check the flatness?

A     

B    



Correct Answer:- D 


30 What is the accuracy of depth micrometer? 

A 0.5 mm    B 0.001 mm     C 0.01 mm      D 0.05 mm

Correct Answer:- C 0.01 mm


31 Which work holding device is used for profile milling of cam? 

A Swivel base vice 

B Circular table

C Bolt and Nuts 

D Fitting vice

Correct Answer:- B Circular table


32 What is the pitch of spindle screw in depth micrometer? 

A 0.5 mm 

B 0.001 mm 

C 0.01 mm 

D 0.05 mm

Correct Answer:- A 0.5 mm 


33 Which type of micrometer does not require zero error correction? 

A Tube micrometer 

B Ball micrometer 

C Stick micrometer 

D Digital micrometer

Correct Answer:- D Digital micrometer


34 What is pitch of M12 tap? 

A 1.50 mm 

B 1.75 mm 

C 1.25 mm 

D 1.00 mm

Correct Answer:- B 1.75 mm 


35 What is used to measure different holes accurately with bore dial gauge?

A Graduations on the dial

B Inter changeable measuring rods

C Sliding plunger 

D Centering shoes

Correct Answer:- A Graduations on the dial


36 What is the part marked as 'X'?


A Avil 

B Stem 
C Plunger 
D Centring shoes
Correct Answer:- B Stem 

37 Which type of milling machine is used for spot facing? 
A Horizontal miling machine
B Vertical milling machine
C Pantograph milling machine
B Planetary milling machine
Correct Answer:- B Vertical milling machine

38 What is the use of telescopic gauge? 
A To measure depth of holes
B To measure slot depth
C To measure size of hole slots and recesses
D To measure counter bore depth
Correct Answer:- C To measure size of hole slots and recesses

39 What is the use of thread ring gauge? 
A Check the internal thread
B Check the external thread
C Check the thread length
D Check the internal diameter
Correct Answer:- B Check the external thread

40 What is the size of angle? 


A 27° 8' 9'' 
B 26° 8' 9" 
C 27° 8' 5'' 
D 27° 9' 9"
Correct Answer:- C 27° 8' 5'' 

41 What is the shape of angle gauge? 
A Square 
B Wedge 
C Rectangle 
D Cylinder
Correct Answer:- B Wedge 

42 What is the type of gauge? 



A Ring gauge 
B Double ended plug gauge
C Thread plug gauge 
D Progrssive plug gauge
Correct Answer:- D Progrssive plug gauge

43 What is the type of gear? 
A Helical gears 
B Spur gear 
C Mitre gear 
D Herring bone gear
Correct Answer:- D Herring bone gear

44 What is the unit of module in spur gear? 
A Microns 
B Centimeter 
C Millimeter 
D Meter
Correct Answer:- C Millimeter 

45 What is the name of gear drive? 


A Rack and Pinion 
B Bevel and Mitre gear
C Worm and Worm gear
D Herring bone gear
Correct Answer:- C Worm and Worm gear


46 What is the height of tooth in spur gear? 

A  Addendum 

B Deddendum 

C 2 x Addendum 

D Addendum + Deddendum

Correct Answer:- D Addendum + Deddendum


47 What is marked as 'X'? 

A Fillet 

B Pitch circle 

C Addendum circle 

D Pitch radius

Correct Answer:- A Fillet


48 Which type of group the squarness comes under in geometrical tolerance?

A Location 

B Form 

C Datum line 

D Attitude

Correct Answer:- D Attitude


49 How to identify and indicate the geometrical tolerance? 

A Numbers 

B Alphabets 

C Decimals 

D Symbols

Correct Answer:-  D Symbols


50 What is the use of depth micrometer? 

A Check the width of slots

B Check the depth of blind holes

C Check the dia of holes

D Check the diameter of thin rods

Correct Answer:- B Check the depth of blind holes


51 Which mechanism used to rotate the circular table? 

A Rack and Pinion mechanism

B Bevel gear mechanism

C Pawl and Ratchet mechanism

D Worm and Worm wheel mechanism

Correct Answer:- D Worm and Worm wheel mechanism


52 What is the uses of screw thread micrometer? 

A Measure major diameter

B Measure pitch diameter

C Measure minor diameter

D Measure thickness of threads

Correct Answer:- B Measure pitch diameter


53 Which type of micrometer designed to measurement of longer internal length?

A External micrometer 

B Outside micrometer 

C Inside micrometer 

D Stick micrometer

Correct Answer:- D Stick micrometer


54 How to set the zero before taking the measurement in micrometer?

A Use micrometer 

B Use vernier micrometer

C Setting rings and Slip gauge

D Angle gauges

Correct Answer:- C Setting rings and Slip gauge


55 How many sets available in telescopic gauge? 

A 8          B 10           C 6              D 5

Correct Answer:-   C 6   


56 What are the sizes available in telescopic gauges as per mitutyo series 155?

A 12 mm to 130 mm 

B 20 mm to 175 mm 

C 5 mm to 120 mm 

D 8 mm to 150 mm

Correct Answer:- D 8 mm to 150 mm


57 What is the range of sizes in feeler gauges as per IS: 3179? 

A 0.001 to 0.05 mm 

B 0.01 to 0.3 mm 

C 0.03 to 1.00 mm 

D 0.02 to 0.75 mm

Correct Answer:- C 0.03 to 1.00 mm 


58 How much tolerance is maintained to make gauges comparing job tolerance?

A One - Tenth 

B One - Fifth 

C One - Hundredth 

D One - Eight

Correct Answer:- A One - Tenth 


59 How much depth cut is applied to finish cut in slot milling? 

A 0.4 to 0.5 mm 

B 0.6 to 0.8 mm 

C 0.5 to 1.0 mm 

D 0.5 to 0.75 mm

Correct Answer:- A 0.4 to 0.5 mm


60  How can you check the width of keyways? 

A Depth micrometer 

B Vernier caliper inner jaw

C Out side micrometer 

D Bore dial gauge

Correct Answer:- B Vernier caliper inner jaw


61 What types of gear is are in automotive differential gear boxes? 

A Worm and Worm gear 

B Rack and Pinion gear

C Hypoid gear 

D Angular gear

Correct Answer:- C Hypoid gear 


62 Which mechanism is used to convert rotary motion into reciprocating motion?

A Worm and Worm gear

B Helical gear set 

C Bevel gear and Hypoid gear

D Rack and Pinion

Correct Answer:- D Rack and Pinion


63 How the pitch of a rack is specified? 

A In addendum 

B In depth 

C In linear 

D In module

Correct Answer:- C In linear 


64 Where is rack milling attachment fixed on a milling machine?

A Between the knee and Elevation screw

B the face of the column and Arbor support

C Between the saddle and Knee

D Between the column and Knee

Correct Answer:- B the face of the column and Arbor support


65 Which part has the movable jaw of gear tooth vernier caliper?

A Vertical sliding head 

B Horizontal sliding 

C Fine adjustment head 

D Vertical slide blade

Correct Answer:- B Horizontal sliding 


66 Which instrument is very similar to the principle of a veriner caliper?

A Micrometer 

B Bevel protractor 

C Gear tooth vernier caliper

D Steel rule

Correct Answer:- C Gear tooth vernier caliper


67 What is the addendum of gear teeth? 

A Distance between outside circle to pitch circle

B Distance between outside circle to root circle

C Distance between pitch circle to root circle

D Distance between outside to bottom point of gear

Correct Answer:- A Distance between outside circle to pitch circle


68 What is the least count of gear tooth vernier caliper?

A 0.01 mm            B 0.01 mm        C 0.2 mm       D 0.02 mm

Correct Answer:- D 0.02 mm


69 Which instrument is used to check the chordal addendum of a gear teeth?

A Screw gauge 

B Vernier caliper 

C Gear tooth  vernier caliper

D Feelar gauge

Correct Answer:- C Gear tooth  vernier caliper


70 What is the use of sector arm on dividing head?

A Lock the index crank in position

B Eliminate counting holes each time

C Fix the index plate on its correct location

D Avoid the back lash of worm and Worm wheel

Correct Answer:- B Eliminate counting holes each time


71 How many turns of index crank is required for one complete turn of index

head spindle?

A 20         B  28        C 40       D 46

Correct Answer:-  C 40    


72 Where the index crank is fixed on index head?

A Sector arm 

B Index plate 

C Worm shaft 

D Worm gear

Correct Answer:- C Worm shaft 


73 What kind of material is used to produce a template?

A Good quality iron tube 

B Good quality round rod

C Good quality copper sheet

D Good quality steel sheet

Correct Answer:- D Good quality steel sheet


74 What is the use of template? 

A Checking the contour of component

B Checking the length of component

C Checking the weight of component

D Checking the width of component

Correct Answer:- A Checking the contour of component


75 What is the use of radius gauge? 

A For check internal and external radius of job

B For check the gap between two sliding surfaces

C For identify the accuracy of joining parts

D For measure the diameter of jobs

Correct Answer:- A For check internal and external radius of job



76 How a vertical milling machine can be identified?

A According to the axis of table movement

B According to the axis of knee movement

C According to the axis of spindle rotation

D According to the posistion of column

Correct Answer:- C According to the axis of spindle rotation


77 Which type of machine is used to produce a T-slot in machine tools table?

A Lathe 

B Horizontal milling 

C Verical milling 

D Drilling machine

Correct Answer:- C Verical milling


78 Which part of vertical milling that can be used for lift the knee?

A Vertical head 

B Table lead screw 

C Elevating screw 

D Front brace

Correct Answer:- C Elevating screw 


79 Which machine used for boring, key way cutting and profile milling can be done?

A Lathe machine 

B Shaping machine 

C Verical milling machine

D Horizontal milling machine

correct Answer:- C Verical milling machine


80 How angular boring is done using a vertical milling machine?

A Swivelling the machine vice

B Swivelling the table 

C Swivelling the spindle head

D Swivelling the column

Correct Answer:- C Swivelling the spindle head


81 What type of cutter holding device is generally used on vertical miling machine?

A Collet chuck 

D Long arbor 

C Clapper block 

D Taper sleeve

Correct Answer:- A Collet chuck 


82 Which type of machine is generally used for wood ruff key way cutting?

A Shaper 

B Slotter 

C Vertical milling 

D Horizontal milling

Correct Answer:- C Vertical milling


83  Which machine is provided with the over arm support for reduce chattering?

A Vertical milling machine

B Shaping machine 

C Horizontal mlling machine

D Slotting machine

Correct Answer:- B Shaping machine 


84 Which formula is used to find out thelinear pitch of a rack?

A (A-Z)40          B π m           C 40/z               D π m/2

Correct Answer:- B π m 


85 How length of rack is calculated? 

A Linear pitch x Number of teeth

B Module x Number of teeth

C 2.25 x module 

D π x Module

Correct Answer:- A Linear pitch x Number of teeth


86 Which formula is used to calculate chrodal addendum of a gear tooth?

A π m 

B mZ 

C mZ sin (90/z) 

D (Z + 2) M

Correct Answer:-  C mZ sin (90/z) 


87 Which part of a gear tooth vernier caliper is used to set the addendum height?

A Vertical slide with blade

B Horizontal slide with movable jaw

C Verical slide and fixed jaw

D Graduated vertical beam and fixed jaw

Correct Answer:-  A Vertical slide with blade


88 How to find the out side diameter of a spur gear having number of teeth is 'Z' and module 'm'?

A OD = Z\M

B OD (Z 2)\M

C OD = (Z - 2)m

D OD = (Z + 2)m

Correct Answer:-  D OD = (Z + 2)m


89 What formula is applied for calculate the pitch diameter of a spur gear tooth?

A Z x m  

B (Z + 2) m 

C Z x m/2 

D 7/6 x m

Correct Answer:-  A Z x m  


90 How many hole circle is suitable for indexing 48 division in index plate?

A 18       B 20       C 23       D 29

Correct Answer:-  A 18


91 Which formula is used to find the gear ratio for differential indexing?

A ( N x 40) x A

B (A x N)x 40/A

C 2 A x 40/A

D (A - N) x 40A

Correct Answer:- B (A x N)x 40/A


92 How any degree is possible to swive on the vertical head of a vertical milling?

A 15°              B 25°            C 35°               D 45°

Correct Answer:- D 45°


93 Which feed is given while sliding the column in vertical milling?

A Circular feed 

B Cross feed 

C Longitudinal feed 

D Vertical feed

Correct Answer:-  D Vertical feed


94 Which machine the spindle can be moved up an down?

A Vertical milling machine

B Horizontal milling machine

C Lathe machine 

D Shaping machine

Correct Answer:-  A Vertical milling machine


95 Why micro cartridges are used on boring bar in vertical milling machine?

A Final adjustment of tool

B Useful for fast roughing of bore

C Useful for large hole drilling

D Useful for step boring easily

Correct Answer:-  A Final adjustment of tool


96 Why the over arm is provided on horizontal milling machine?

A It reduce the vibration of table while milling

B It support the other end of arbor

C It guide the top end of elevating screw

D It support the knee

Correct Answer:-  B It support the other end of arbor


97 Which type of cutter holding device is generally used on horizontal milling machine?

A Long arbor 

B Collet chuck 

C Drill chuck 

D Three jaw chuck

Correct Answer:- A Long arbor 


98 How many elements must be known in cut a helix or a spiral?

A 2           B 1           C 5            D 6

Correct Answer:- A 2   


99 What is the line generated by the progress and rotation of a point around a cylinder?

A Sprial      B Helix      C Bevel      D Taper

Correct Answer:- B Helix  


100 What is the maximum helix angle determined in helical gear?

A Obtue angle 

B Acute angle 

C Right angle 

D Reflex angle

Correct Answer:- B Acute angle 


101 Which trigonometric ratio is determined the helix anfge for helical gear?

A Tan θ        B Sin θ          C Cosec θ          D Cos θ

Correct Answer:- D Cos θ


102 What is the name of cutter? 

A Side and Face milling cutter

B End mill cutter 

C Slab milling cutter 

D Shell and Mill cutter

Correct Answer:- C Slab milling cutter 


103 What is the part marked as 'X'? 

A Horizontal beam 

B Vertical beam 

C Horizontal sliding head 

D Vertical sliding head

Correct Answer:- A Horizontal beam 


104 Which type of indexing is used to cut the helical gear? 

A Direct indexing 

B Differential indexing 

C Angular indexing 

D Simple indexing

Correct Answer:- B Differential indexing 


105 What is the type of reamer? 

A Hand reamer with pilot 

B Machine reamer 

C Hand reamer 

D Jobber reamer

Correct Answer:- C Hand reamer


106 What is ratio of taper pin hand reamer? 

A 1:50 

B 1:40 

C 1:30 

D 1:20

Correct Answer:- A 1:50 


107 What is the part marked as 'X'? 

A Face 

B Flute 

C Heel 

D Cutting edge

Correct Answer:- C Heel 


108 Which type of reamer used to finish the holes for fitting taper pins on taper holes?

A Taper reamer 

B Rose reamer 

C Machine jig reamer 

D Taper pin machine reamer 

Correct Answer:- D Taper pin machine reamer


109 Which part is ensure positive drive of the drill from the drill spindle?

A Shank 

B Tang 

C Neck 

D Point angle

Correct Answer:- B Tang 


110 Where is engraved diameter and other particular of the drill? 

Shank 

B Tang 

C Neck 

D Face 

Correct Answer:- C Neck 


111 Which part is held and driven the drill? 

A Neck 

B Tang 

C Heel 

D Shank

Correct Answer:- D Shank


112 What is the lip clearance angle in drill? 

A 15

B 12

C 18

D 118

Correct Answer:- B 12


113 Which milling machine is suitable for helical milling? 

A Horizontal milling machine

B Universal milling machine 

C Pantograph milling machine

D Vertical milling machine 

Correct Answer:- B Universal milling machine 


114 When you cut left hand helix which direction must be swivelled the table in the milling machine?

A Counter clock wise direction

B Clock wise direction 

C Table filting downward position

D Table at stable condition 

Correct Answer:- B Clock wise direction 


115 Calculate the real module in helical gear the pitch diameter (PD) is 100 mm and number of teeth 19.

A 5.00 mm 

B 0.19 mm 

C 5.26 mm 

D 20 mm

Correct Answer:- C 5.26 mm 


116 Which type of gear is used for high speed running and heavy duty gear drives?

A Spur gear 

B Helical gear 

C Angular gear 

D Worm and Worm gear

Correct Answer:- B Helical gear 


117 Why reamers have uneven spacing of teeth? 

A To be maintain the hole diameter

B To be cut excessive material 

C To be cut less material 

D To reduce chattering  

Correct Answer:- D To reduce chattering  


118 What is the name of the reamer used with several sizes of reamers in with one shank?

A Adjustable machine reamer

B Reamers with floating holders 

C Shell reamer 

D Chucking reamer

Correct Answer:- C Shell reamer 


119 Which is the law related to the given figure? 

A Ohm's law 

B Krichhoff's law

C Faraday's law 

D Lenz's Law

Correct Answer:- A Ohm's law 


120 What is the electrical property of an electrical circuit to oppose any change in the magnitude of current flow?

A Conductivity 

B Inductance 

C Insulation 

D Capacitance

Correct Answer:- B Inductance


121 Which machine converts electric energy into mechanical rotary motion?

A Motor 

B Generator 

C Transformer 

D Solenoid

Correct Answer:- A Motor 


122 Which component rotates in an electric generator? 

A Field pole 

B Brushes 

C Frame 

D Armature

Correct Answer:- D Armature

123 Which equipment converts mechanical energy to
electrical energy?
A D.C. motor 
B Generator 
C Transformer 
D A.C. motor
Correct Answer:- B Generator 

124 What is the general electrical symbol? 
A Switch 
B Resistor 
C Fuse 
D Capacitor
Correct Answer:- C Fuse 

125 Which accessary acts as switch and fuse? 
A Isolater 
B MCB 
C Fuse 
D Switch
Correct Answer:- B MCB 

126 What is the purpose of LVDT? 
A Measure current 
B Measure temperature
C Measure voltage
D Measure displacement
Correct Answer:- D Measure displacement

127 What is relation or I,V,R according to the Ohm’s Law? 
A I = V/R 
B I = R/V
C I=I/VR
D I=RV/I
Correct Answer:- A I = V/R 

128 What is the name of the device used to provide inductance in a circuit?
A Volt meter 
B Ammeter 
C Inductors 
D Solenoid
Correct Answer:- C Inductors

129 Which electrical device detect the fault indication automatically?
A Relay 
B Thermostat 
C Intermediate switch
D Limit switch
Correct Answer:- A Relay 

130 What is the name of device? 
A MCB 
B ELCB 
C Relay 
D Thermostat
Correct Answer:- A MCB

129 What is the expansion of LVDT in sensor? 
A Linear Variable Differential Transformers
B Linear Various Differential Transformer
C Linear Variedly Differential Transformer
D Low Variable Differential Transformers
Correct Answer:- A Linear Variable Differential Transformers

130  What is the name of the electro mechanical device having insulated wire wound over a solid iron core?
A Motor 
B Solenoid 
C Transformer 
D Inductor
Correct Answer:- B Solenoid 

131 Which rule determines the direction of motion of the conductor in D.C. motor?
A Fleming's right hand rule
B Fleming's left hand rule
C Marewells right hand grip rule
D Cork's screw rule
Correct Answer:- B Fleming's left hand rule

132 Which law states the working principle of the generator?
A Lenz's law 
B Ohm's law 
C Faraday's law of electro magnetic induction
D Kirchhoff's law
Correct Answer:-  C Faraday's law of electro magnetic induction

133 What is the component have the same physical dimensions of MCBs but cannot be used for automatic tripping?
A Fuse 
B Isolator 
C Starter 
D Relay
Correct Answer:- B Isolator 

134 Which is the technology used by photo electric sensors for sensing the target?
A Inductive 
B Capactive 
C Photo electric 
D Ultra sonic
Correct Answer:- C Photo electric

135 Which is the quantity being measured by the strain gauge?
A Vibration 
B Temperature 
C Pressure 
D Sound
Correct Answer:- C Pressure 

136 What is the name of the device used for protecting a circuit against excess current?
A Fuse 
B Switch 
C Alarm 
D Resistor
Correct Answer:-  A Fuse 

137 What is the letter symbol for inductance? 
A L         B I       C F       D P
Correct Answer:- A L

138 What is the sensing range of photo electric proximity sensor?
A 4mm - 40mm 
B 3mm - 60mm 
C 1mm - 60mm 
D 3mm - 30mm
Correct Answer:- C 1mm - 60mm 

139 Which is general safety in CNC turning? 
A Do not use non standard tools /holders
Check the voltage and current
Check the chuck function
Check the programme control levels
Correct Answer:- A Do not use non standard tools /holders

140 What is the safety check on the CNC machine after start? 
A Check the chuck function
B Check the voltage and current
C Check the hydraulic tank oil level
D Check the clamping stock

Correct Answer:- A Check the chuck function

141 What is the name of machine system? 

A Convention 

B Auto tool changers 

C Numerical control 

D Computer numerical control

Correct Answer:- B Auto tool changers 


142 What is the first step to stop CNC machine of an accident happen while working?

A Switch off regulator

B Press emergency switch

C Reset machine 

D Reset regulator

Correct Answer:- B Press emergency switch


143 Which motor control the axes of CNC machine? 

A Air motor 

B DC series motor 

C Servo motor 

D Hydraulic motor

Correct Answer:- C Servo motor 


144 Which mechanism reduces the back lash of CNC lathe? 

A Stopper 

B Clutch 

C Recirculating ball screw with nut

D Break

Correct Answer:- C Recirculating ball screw with nut


145 What is G04? 

A Linear interpolation

B CW circular interpolation

C CCW Circular Interpolation

D Dwell time

Correct Answer:- D Dwell time


146 Which type of chuck is used in a CNC lathe? 

A Two jaw chuck 

B Three jaw chuck 

C Hydraulic chuck 

D Four Jaw chuck

Correct Answer:- C Hydraulic chuck 


147 What is the maximum machining length in a CNC lathe? 

A 320 mm       B 245 mm       C 200 mm       D 340 mm

Correct Answer:-  B 245 mm


148 What is the spindle speed range in CNC machine? 

A 40-500 RAM 

B 40-4000 RAM 

C 10-600 RAM 

D 30-1000 RAM

Correct Answer:- B 40-4000 RAM 


149 What is the name part marked as ‘X’ in block diagram of CNC machine tool?

A X- axis position transducer

B Y- axis position transducer

C X- axis servomotor 

D Y- axis servomotor

Correct Answer:- D Y- axis servomotor


150 What types of taper is in the CNC machine spindle? 

A ISO 40 

B Morse taper 

C Jarno taper 

D Pin taper

Correct Answer:- A ISO 40 


151 What R denotes as per ISO designation of boring bar S32USKKR12 of CNC lathe?

A Shank type 

B Clearence angle 

C Tool length 

D Cutting direction

Correct Answer:- D Cutting direction


152 Which describing machine tool movement in CNC? 

A G-code 

B M-code 

C T-word 

D S-word

Correct Answer:- A G-code 


153 What ‘N’ of ISO insert tool specifies? 

A Shape 

B Grade 

C Material 

D Relief angle

Correct Answer:- D Relief angle


154 What is M8 represent in programs off CPU tapping? 

A Coolant off 

B Coolant on 

C Specific direction 

D Tapping RH threads

Correct Answer:- B Coolant on 


155 Which code represents in more flexible and suitable for threading longitudinal transverse and tapered thread?

A G 76           B G 92         C G 32 D       G 34

Correct Answer:-  G 34


156 Which preparatory code should be selected for taper threading cycle?

A G 32        B G 92          C G 76            D G 33

Correct Answer:- C G 76  


157 Which G-code is used for tapping left hand thread with thread M4 in CNC program?

A G 74            B G 84             C G 28              D G 9

Correct Answer:-  B G 84


158 What is the composition of stellite tool material? 

A Cobalt, Chromium and Tungsten

B Cobalt, Nikel and Tungsten

C Cobalt, Chromium and Nikel

D Cobalt, Carbon and Tungsten

Correct Answer:-  A Cobalt, Chromium and Tungsten


159 Which is the tool selection word is specified? 

A G-Allowed by 5 digit numbers

B F-Allowed by 5 digit numbers

C S-Allowed by 5 digit numbers

D T-Allowed by 5 digit numbers

Correct Answer:-  D T-Allowed by 5 digit numbers


160 What is the expansion of CAD? 

A Computer Aided Development

B Computer Aided Design

C Computer Automatic Development

D Computer Automatic Design

Correct Answer:-  B Computer Aided Design


161 Which is the disadvantage of NC system? 

A Accuracy cannot be a change

B Increase compound rejection

C Skilled operator involves

D If tape is spoiled, entire program is affected

Correct Answer:- D If tape is spoiled, entire program is affected


162 Which guide way separate the surface contact between the sliding parts by a thin layer of fluid?

A Flat guide way 

B Vee guide way 

C Hydrostatic guide way

D Dovetail guide way

Correct Answer:- C Hydrostatic guide way


163 When the machine moves 25.49 mm for the commond X = 25.50 mm, what must be the positional accuracy?

A 0.001 mm      B 0.01 mm        C 0.1 mm          D 1 mm

Correct Answer:- B 0.01 mm


164 What should be the safety precaution for holding the work piece to the lathe chuck?

A Cleaned 

B Measured 

C Clamped securly 

D Polished

Correct Answer:- C Clamped securly 


165 Which part provides linear travel to the tool in CNC lathe? 

A Lead screw 

B Ball screw 

C Warm wheel 

D Rack and Pinion

Correct Answer:- B Ball screw 


166 Which axis the fore finger indicates in right hand thumb rule? 

A Y axis    B X axis      C Z Axis      D A axis

Correct Answer:- B X axis 


167 What is the control system of the CNC machine? 

A Straight cut control

B 2-D Contouring control

C 3-D Contouring control

D 2½ D Contouring control

Correct Answer:- B 2-D Contouring control


168 Which quadrant in cartesian co-ordinate will have positive value both in X and Y?

A Fourth 

B Second 

C Third 

D First

Correct Answer:- D First


169 Which G-code description maximum spindle speed setting? 

A G50      B G71         C G72         D G42

Correct Answer:- A G50 


170 What is the function of M02 code in part programming? 

A Programme stop 

B Optional stop 

C End of programme execution

D Coolant ON

Correct Answer:-  C End of programme execution


171 What is the function of M02 code in part programming? 

A Programme stop 

B Optional stop 

C End of programme execution

D Coolant ON

Correct Answer:- C End of programme execution


172 Which code is used for peck drilling in FANUC controller system? 

A G 80         B G 76           C G 72          D G 74

Correct Answer:- D G 74


173 Which G code describe machine tool movement of grooving cycle? 

A G 73             B G 75           C G 92            B G 98

Correct Answer:- B G 75


174 What is the function of G 32 code? 

A Rapid traverse 

B Liner inter potation 

C Thread cutting 

D Circulation inter polation

Correct Answer:- C Thread cutting 


175 What is the role of G-wards in part programming function? 

A Preparatory function

B Sequence of operation by the tool

C Indicate position of tool motion

D Specify the cutting speed process

Correct Answer:- A Preparatory function


176 Which is the programme for depth of cut of 2-5 mm is given? 

A N003 M0 8 G 01X -2.5

B N004 G 01 Z -2.5 

C N004 G 01 Z -2.5 

D N007 G 00 X + 5

Correct Answer:- A N003 M0 8 G 01X -2.5


177 Which is the part programme to limit the RPM to 3000? 

A G 92 S 3000 

B G 96 N 3000 

C G 00 T 3000 

D G 01 S 250

Correct Answer:- A G 92 S 3000 


178 Which common word address used to miscellaneous function in CNC lathe?

A N      B G      C S      D M

Correct Answer:- D M


179 Which M-code is defined and implement to spindles stop? 

A M05      B M08       C M11       D M14

Correct Answer:- A M05


180 What is the code M11 defined by the machine tool? 

A Coolant OFF 

B Coolant ON 

C Chuck close 

D Door close

Correct Answer:- C Chuck close 


181 Which code describe the auxiliary function of CNC machine? 

A N- words 

B M- words 

C G- words 

D T- words

Correct Answer:- B M- words 


182 Which is the programme for simple turning operation for the length of -30 mm?

A N 008 G 01 Y -2.5 

B N 011 G 00 X 020 

C N 009 G 01 Z -30 N 

D 010 G 01 X 5 Z - 30

Correct Answer:- C N 009 G 01 Z -30 N 


183 Which is the method in avoidance of collisions due to programme? 

A Full cycle simulation

B Reduce motor speed

C Give less feed 

D Reduce cutter speed

Correct Answer:- A Full cycle simulation


184 What is the feed of CNC machine XYZ axis? 

A 1 to 2 mm/min 

B 5 to 50 mm/min 

C 1 to 1000 mm/min 

D 1 to 100 mm/min

Correct Answer:- C 1 to 1000 mm/min 


185 How many times the cutting speed of ceramic tool is greater than H.S.S?

A 20 times 

B 15 times 

C 4 times 

D 42 times

Correct Answer:- D 42 times


186 Which device enables crash prevention on different types of CNC machines?

A Encoder - dish position sensors

B Servo motor 

C Control computer 

D Comparator

Correct Answer:- A Encoder - dish position sensors


187 What is the expansion of MDI in CNC? 

A Mannual Data Input 

B Managing Diet Instruction

C Maintain the Data Instruction

D Machine Development in Industry

Correct Answer:- A Mannual Data Input 


188 Which is axis of spindle in CNC lathe? 

A X axis 

B Y axis 

C Z axis 

D 4th axis

Correct Answer:- C Z axis 


189 Which mode allows an operation to check the program by executing only one program block at a time?

A Single block mode 

B MDI mode 

C Edit mode 

D Auto mode

Correct Answer:- A Single block mode 


190 Which is the input of CNC lathe? 

A Microphone 

B Control panel 

C Joy stick 

D Mouse

Correct Answer:- B Control panel 


191 What is 'F' for the given block G01 X20 Y50 F120?

A Function 

B Feed back 

C Feed 

D Frequency

Correct Answer:- C Feed 


192 Which is the control developed by siemens company?

A Usage 

B Allen 

C Mazatrol 

D Sinumeric

Correct Answer:- D Sinumeric


193 What is the simulation process in a CNC machine?

A Planning function 

B Implementing function

C Verification activity 

D Correcting function

Correct Answer:- C Verification activity 


194 How the simulation take place in CNC machine?

A By hardware device 

B Through a software 

C Through machined device

D Through electric device

Correct Answer:- B Through a software


195 Which offset is used to adjust the machined size become x 40.44mm instead of programmed size x 40.49 reduced 0.04 mm?

A Work offset 

B Geometrical offset 

C Wear offset 

D Tool offset

Correct Answer:- C Wear offset 


196 What is the explanation of program N005G01 X 5Z-30?

A Taper turning for the length of 30 mm

B Tool returns out to its initial position

C Tool is moving towards left by 30 mm

D Against, infeed of 5 mm in given

Correct Answer:- A Taper turning for the length of 30 mm


197 Which traverse 'X' 60 mm as per technical specification of CNC machine?

A Saddle movement 

B Head movement 

C Column movement 

D Turret movement

Correct Answer:- A Saddle movement 


198 What is the mode to check the effectiveness of the program?

A Dry run 

B Jog mode 

C Edit mode 

D Single block mode

Correct Answer:- A Dry run 


199 Which is the start of program in address / numeric key?

       A                           B                          C                           D                      

                                         

Correct Answer:- A 


200 What is the symbol identity? 

A Spindle stop / Start

B Feed stop / Start 

C Single block 

D Direction keys

Correct Answer:- A Spindle stop / Start 

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