JUL2015 TURNER SEM I THEORY
The shape on an information sign is..
A circular B triangular C square D oval
Among the below colour which colour is used for prohibition sign?
A White symbol on blue background
B Yellow back-ground with black border and symbol
C White symbols on green back ground
D Red bolder and cross bar. black symbol on white back arounds
The best method to avoid accident is ............
A By wearing safety equipment
B By absorbho safety precautions reiat to a job machine and working place
C Doing things in one s own way
D Doing things which a highty skilied worker practice
Which one of the following fire extinguish; Is suitable for a live electrical fire?
D Liquified chemical
The straight shank drill is held in the main spindle of drilling machine by.......
A Floating holder
Bar type tap wrench is........
A not possible to holding large diameter taps
B more suitable for large diameter taps
C not suitable to adjust the jaws
D suitable for threading holes in restricted places
Centre punch angle of point is ....
A 30° B 45° C 60° D 90°
Which one is to be used to start the tapping?
A Taper tap B Plug tap C Second tap D Machine tap
A new hacksaw blade after a few strokes becomes loose .because of.........................
A stretching of the blade
B wing nut thread being worn out
C wrong pitch of the blade
D proper selection of the set of jaws
The hacksaw frame in which more than one standard size of blade can be fitted is called...
A fixed hacksaw frame B tubular hacksaw frame
C adjustable hacksaw frame D deep cutting hacksaw frame
Which one of following mechanical properties enables a metal to be made into thin sheets?
A Toughness B Hardness C Ductility D Malleability
At the end of the cutting with a hacksaw the cutting pressure should be ....
A Less B High C Normal D Very high
Which is a reason for manufacturing grey cast iron by lathe bed?
A can withstand compressive ioad B can with stand tensile load
C difficult to machine ability D to brake sudden shock
Name the mechanism for moving and controlling the carriage parts.
A Feed mechanism B Apron C Carriage D Top slide
What should be used to move the carriage manually?
A Cross slide B Carriage hand wheel C Feed lever D Half nut
To prevent the chuck from damaging the lathe guide ways while mounting....
A a lift the chuck with a hand crane
B ask the instructor or foreman for help
C place a wooden block or board on the guide ways
D support with a screw jack .
Which chuck is provided for T-slots?
A 3 jaw chuck B 4 jaw chuck
C Magnetic chuck D 2 jaw concentric chuck
The pads of a steady rest are made of.............
A carbon steel B lead C mild steel D brass
A steady rest is used................
A to hold jobs B for face plate work
C to drive the job D to support the job
Cutting tool held with 3 bolts, Name the tool post.
A Open side tool post B Four way tool post
C Universal tool post D British tool post
The half nut lever is used for.....
A engaging the longitudinal feed on the carriage
B taking up the slack in the cross slide nut
C changing from longitudinal to cross- feed
D thread cutting
The feed change lever.......
A changes the directions of the lead screw
B diverts the feed to either the cross slide or the longitudinal slide
C change the feed to a high or low range
D connects or disconnects the carriage hand wheel
Centre drill is done at the......
A high spindle speed with a high feed
B low spindle speed with a high feed
C high spindle speed with a low feed
D low spindle speed with a low feed
The centre drill breaks as a result of......
A too heavy feed and too low speed
B too light feed and too high speed
C dropping it on the floor
D allowing chips to form a tangle around them
The cutting tool is manufactured by....
A low carbon steel B medium carbon steel
C high carbon steel D wrought iron
Tool holders are used to ....
A extend the life of the tool B protect the tool
C clamp the tool securely D deflect the cutting pressure
Depth of cut is provided by using
A top slide B cross slide
C compound slide D adjusting tool
For changing the rotation of feed rod, which lever should be used?
A Feed change lever B Carriage locking lever
C Feed selector D Feed reverse lever
Which type of chip formation would be the best for turning mild steel?
A Long curly chips B Segmented chips C I - Shaped chips D Spiral chips
For knurling operation, the rotation of the spindle speed is....
A 1/2 of the tuning spindle speed B 1 /3 of the turning spindle speed
C equal to turning spindle speed D equal to high spindle speed
For turning the cast iron, which the following should be used?
A Soluble oil B No cutting fluid C Cutting oil D Water as coolant
The function of the cutting fluid in lathe operation is......
A cleaning and lubrication
B chip removal and lubrication
C better finish and lubricant
D cooling and flushing chips away from the cutting tool
The protection guard over the grinding wheel is fixed to protect the......
A spindle of the pedestal grinder B grinding wheel
C work pieces D operator
For grinding wheel, which one is
represented by the symbols A to Z ?
A Grit size B Silicon carbide
C Bond material D Grade of the grinding wheel
The tolerance of a hole is the difference between the...........
A maximum hole and the minimum shaft
B maximum hole and the minimum hole
C minimum hole and the maximum shaft
D maximum hole and the maximum shaft
The three main classes of fits used in the B.I.S system are.......
A clearance, transition and interference
B loose fit, sliding fit and shrinkage fit
C round fit, fiat fit and expansion fit
D tight fit, push fit and medium fit