TURNER THEORY
SEM - IV Jan 2018
A fixture does not ......
a) Holds the workpiece
b) Locate the workpiece
c) Guide the tool
d) All of these
Fixture are used ......
a) For holding and guiding the tool in drilling, reaming or tapping operation
b) For holding the work in milling, grinding, planning, or turning operation
c) To check the accuracy of workpiece
d) None of the above
Which angle is make side and surface of angle plate?
a) 200°
b) 450°
c) 900°
d) 1200°
The slot is cut in angle plate because of .......
a) For lift by hook
b) For keep job straight
c) For less weight
d) For tighten nut & bolt
........... grade angle plate is used in generally machine shop.
a) A b) B c) C d) D
........is a heat treatrnent process for surface hardening.
a) Carburising
b) Normalising
c) Annealing
d) Tempering
Fixture is most productive tool because .......
a) Hold the job
b) Locate the job
c) Both (a) & (b)
d) Guide the cutting tool
Feed is given ......... types for thread cutting.
a) 4 b) 2 c) 3 d)5
Lead .........
a) Pitch x no. of start
b) Pitch x no. of lead
c) Lead x Root
d) Root x Crest
The process of steel is heated or chilled for achieve desired property is known as ........
a) Tempering
b) Hardening
c) Annealing
d) Heat treatment
The cutting edge of a chisel should be ......
a) Hardened
b) Tempered
c) Hardened & Tempered
d) Case hardened
Tempering is done to ......
a) Increase toughness & Decrease brittleness
b) Cutting edge is hardened
c) Cutting edge is softened
d) Cutting edge is brittled
GS4 is means a
a) Select zero offset
b) Zero offset
c) Offset zero
d) zero name
G is symbol of .......
a) Start function
b) End fUnction
c) Medium ftmction
d) All ofthese
PLC is part of .........
a) PNC b) CMG c) DMC d) CNC
Tool offset function is indicated by ........ word.
a) A b) B c) C d) D
The translator program used assembly language is called ...
a) Compiler
b) Interpreter
c) Assembler
d) Translator
The value of one micron is —
a) 0.001mm
b) 0.01mm
c) 0. 1mm
d) 0.001 mm
Quality control is main purpose of ......... cost product used.
a) More b) Less
c) Average d) All of these
The process of improving the cutting action of grinding wheel is called ........
a) Truing
b) Dressing
c) Facing
d) Clearing
In order achieve a specific finish in single point turning, the most important to be controlled is .......
a) Depth of cut
b) Cutting speed
c) Feed
d) Tool rake angle
Work done in metal cutting depends on ......
a) Cutting force & Cutting speed
b) Cutting speed & Heat generated
c) Depth of cut & Cutting speed
d) Cutting force & depth of cut
If chip thickness increases tool wears at .......
a) Less
b) Moderate
c) More rapid
d) None of these
Cutting speed is expressed in ......
a) Meter per second
b) Meter per minute
c) Millimeter per minute
d) Centimeter per minute
The factor which affects the tool life is ...........
a) Tool geometry
b) Cutting speed
c) Feed rate
d) All of these
Larger end cutting edge angletool life.
a) Increases
b) Decreases
c) No effect
d) Constant
Pressure applied on workpiece in case of lapping operation is —
a) 0.01kg/cmsq
b) 0.1kg/cmsq
c) 0.5kg/cmsq
d) 1.0kg/cmsq
Honing is used to .......
a) Correct ovality
b) Waviness of axis
c) Non-parallelism of cylindrical features
d) All of these
Machine lapping is performed on ........
a) Roller bearings
b) Crankshafts
c) Pistons
d) All of these
The usual amount of stock left for removal by honing is from ......
a) 0. 1mm to 0.25mm
b) 0.75mm to 0.90mm
c) 0.90mm to 1.05mm
d) 1.05mm to 1.25mm
Largest amount of material is used in ......
a) Buffing
b) Lapping
c) Honing
d) Superfinishing
The following is preferred for lapping soft ferrous and non-ferrous metals ......
a) Silicon carbide
b) Natural corundum
c) Aluminium oxide
d) All of these
The surface roughness on a drawing is represented by
a) Circle
b) Square
c) Triangle
d) Zig-Zag lines
Encoder is used in CNC machine tool, to sense and control ........
a) Spindle speed
b) Spindle position
c) Table position
d) All of these
The process of decomposing martensitic sfructure, by heating martensitic steel below its critical temperature is called as .....
a) Normalizing
b) Quenching
c) Tempering
d) Carburizing
Which of the following factors increases hardenability of a metal?
a) Alloying elements
b) Fine grain size
c) Very high carbon content in steel
d) All of these
Which carburizing method has high production rate?
a) Pack carburizing
b) Liquid carburizing
c) Gas carburizing
d) All of these
Process control is carried out ......
a) Before production
b) During production
c) After production control
d) All of these
Low cost, higher volume items requires .......
a) No inspection
b) Little inspection
c) Intensive inspection
d) 100% inspection
Pre condition for deciding zero offset is .......
a) Cutter must be fixed jn machine spindle
b) Data must be entered in machine
c) Work must be clamped on the machine table
d) Feed, Speed etc. must be decided
The following type of lathe is operated through cams and cam plate ......
a) Precision lathe
b) Crankshaft lathe
c) Automatic lathe
d) Duplicating lathe
The following part of lathe serves as housing for the driving pulleys and back gears —
a) Head stock
b) Tail stock
c) Bed
d) Carriage
The following acts as driving shaft in lathe .....
a) Countershaft
b) Spindle shaft
c) Lead screw
d) None of these
The following is used for holding bored parts for machining their outside surfaces on lathe .......
a) Mandrel
b) Dogs
c) Driving plate
d) Angle plate
The following is used to turn very long job between centers on a lathe ........
a) Steady rest
b) Follower rest
c) Compound rest
d) All of these
The following is used to support to flexible job very close to the cutting edge .......
a) Steady rest
b) Follower rest
c) Compound rest
d) All of these
G78 represents ......
a) Rough turning
b) Thread cutting
c) Rough facing
d) Finishing cycle
CAD and CAM are related through .......
a) NC tapes
b) Automation tools
c) Part production & testing
d) Common data base
In CNC machines, the controlling of function like speed, feed, tool positioning etc. are controlled by .........
a) Numeric codes
b) Alpha codes
c) Alpha numeric codes
d) Photo sensing system
Which one of the following is not advantage of CNC machines .......
a) One machine can perform severai operation
b) Inspection cost is very loss
c) Difficult to correct the dimension variation
d) Functioning of machine not dependent on operational skills
SEM - IV Jan 2018
A fixture does not ......
a) Holds the workpiece
b) Locate the workpiece
c) Guide the tool
d) All of these
Fixture are used ......
a) For holding and guiding the tool in drilling, reaming or tapping operation
b) For holding the work in milling, grinding, planning, or turning operation
c) To check the accuracy of workpiece
d) None of the above
Which angle is make side and surface of angle plate?
a) 200°
b) 450°
c) 900°
d) 1200°
The slot is cut in angle plate because of .......
a) For lift by hook
b) For keep job straight
c) For less weight
d) For tighten nut & bolt
........... grade angle plate is used in generally machine shop.
a) A b) B c) C d) D
........is a heat treatrnent process for surface hardening.
a) Carburising
b) Normalising
c) Annealing
d) Tempering
Fixture is most productive tool because .......
a) Hold the job
b) Locate the job
c) Both (a) & (b)
d) Guide the cutting tool
Feed is given ......... types for thread cutting.
a) 4 b) 2 c) 3 d)5
Lead .........
a) Pitch x no. of start
b) Pitch x no. of lead
c) Lead x Root
d) Root x Crest
The process of steel is heated or chilled for achieve desired property is known as ........
a) Tempering
b) Hardening
c) Annealing
d) Heat treatment
The cutting edge of a chisel should be ......
a) Hardened
b) Tempered
c) Hardened & Tempered
d) Case hardened
Tempering is done to ......
a) Increase toughness & Decrease brittleness
b) Cutting edge is hardened
c) Cutting edge is softened
d) Cutting edge is brittled
GS4 is means a
a) Select zero offset
b) Zero offset
c) Offset zero
d) zero name
G is symbol of .......
a) Start function
b) End fUnction
c) Medium ftmction
d) All ofthese
PLC is part of .........
a) PNC b) CMG c) DMC d) CNC
Tool offset function is indicated by ........ word.
a) A b) B c) C d) D
The translator program used assembly language is called ...
a) Compiler
b) Interpreter
c) Assembler
d) Translator
The value of one micron is —
a) 0.001mm
b) 0.01mm
c) 0. 1mm
d) 0.001 mm
Quality control is main purpose of ......... cost product used.
a) More b) Less
c) Average d) All of these
The process of improving the cutting action of grinding wheel is called ........
a) Truing
b) Dressing
c) Facing
d) Clearing
In order achieve a specific finish in single point turning, the most important to be controlled is .......
a) Depth of cut
b) Cutting speed
c) Feed
d) Tool rake angle
Work done in metal cutting depends on ......
a) Cutting force & Cutting speed
b) Cutting speed & Heat generated
c) Depth of cut & Cutting speed
d) Cutting force & depth of cut
If chip thickness increases tool wears at .......
a) Less
b) Moderate
c) More rapid
d) None of these
Cutting speed is expressed in ......
a) Meter per second
b) Meter per minute
c) Millimeter per minute
d) Centimeter per minute
The factor which affects the tool life is ...........
a) Tool geometry
b) Cutting speed
c) Feed rate
d) All of these
Larger end cutting edge angletool life.
a) Increases
b) Decreases
c) No effect
d) Constant
Pressure applied on workpiece in case of lapping operation is —
a) 0.01kg/cmsq
b) 0.1kg/cmsq
c) 0.5kg/cmsq
d) 1.0kg/cmsq
Honing is used to .......
a) Correct ovality
b) Waviness of axis
c) Non-parallelism of cylindrical features
d) All of these
Machine lapping is performed on ........
a) Roller bearings
b) Crankshafts
c) Pistons
d) All of these
The usual amount of stock left for removal by honing is from ......
a) 0. 1mm to 0.25mm
b) 0.75mm to 0.90mm
c) 0.90mm to 1.05mm
d) 1.05mm to 1.25mm
Largest amount of material is used in ......
a) Buffing
b) Lapping
c) Honing
d) Superfinishing
The following is preferred for lapping soft ferrous and non-ferrous metals ......
a) Silicon carbide
b) Natural corundum
c) Aluminium oxide
d) All of these
The surface roughness on a drawing is represented by
a) Circle
b) Square
c) Triangle
d) Zig-Zag lines
Encoder is used in CNC machine tool, to sense and control ........
a) Spindle speed
b) Spindle position
c) Table position
d) All of these
The process of decomposing martensitic sfructure, by heating martensitic steel below its critical temperature is called as .....
a) Normalizing
b) Quenching
c) Tempering
d) Carburizing
Which of the following factors increases hardenability of a metal?
a) Alloying elements
b) Fine grain size
c) Very high carbon content in steel
d) All of these
Which carburizing method has high production rate?
a) Pack carburizing
b) Liquid carburizing
c) Gas carburizing
d) All of these
Process control is carried out ......
a) Before production
b) During production
c) After production control
d) All of these
Low cost, higher volume items requires .......
a) No inspection
b) Little inspection
c) Intensive inspection
d) 100% inspection
Pre condition for deciding zero offset is .......
a) Cutter must be fixed jn machine spindle
b) Data must be entered in machine
c) Work must be clamped on the machine table
d) Feed, Speed etc. must be decided
The following type of lathe is operated through cams and cam plate ......
a) Precision lathe
b) Crankshaft lathe
c) Automatic lathe
d) Duplicating lathe
The following part of lathe serves as housing for the driving pulleys and back gears —
a) Head stock
b) Tail stock
c) Bed
d) Carriage
The following acts as driving shaft in lathe .....
a) Countershaft
b) Spindle shaft
c) Lead screw
d) None of these
The following is used for holding bored parts for machining their outside surfaces on lathe .......
a) Mandrel
b) Dogs
c) Driving plate
d) Angle plate
The following is used to turn very long job between centers on a lathe ........
a) Steady rest
b) Follower rest
c) Compound rest
d) All of these
The following is used to support to flexible job very close to the cutting edge .......
a) Steady rest
b) Follower rest
c) Compound rest
d) All of these
G78 represents ......
a) Rough turning
b) Thread cutting
c) Rough facing
d) Finishing cycle
CAD and CAM are related through .......
a) NC tapes
b) Automation tools
c) Part production & testing
d) Common data base
In CNC machines, the controlling of function like speed, feed, tool positioning etc. are controlled by .........
a) Numeric codes
b) Alpha codes
c) Alpha numeric codes
d) Photo sensing system
Which one of the following is not advantage of CNC machines .......
a) One machine can perform severai operation
b) Inspection cost is very loss
c) Difficult to correct the dimension variation
d) Functioning of machine not dependent on operational skills
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