- Which of the following is not an advantage of CNC machines?
a) high productivity
b) better quality
c) less wastage
d) Requirement of highly skilled labor
Answer – d
- Which of the following is a CNC operating mode?
a) Single block mode
b) auto block turn
c) manual turning
d) All options
Answer – d
- In which of the following CNC mode we can execute the program?
a) Single block mode
b) auto turning
c) manual turning
d) none of these
Answer – c
- Which of the following is used for editing CNC turning programs?
a) Single block mode
b) auto turning
c) manual turning
d) Edit Mode
Answer – d
- Which of the following command stands for program stop?
a) M00
b) M05
c) M09
d) M07
Ans. a
- Which of the following is the command for coolant on?
a) M00
b) M05
c) M07
d) M08
Ans. d
- CNC means :-
a) Computer Numerical control
b) Center for Number Correction
c) Centralized Number code
d) Computer Number Control
Ans. a
- Which of the following is not an advantage of CNC machines?
a) high cost of the machine
b) high output
c) high quality production
d) All options
Answer – a
- CNC machines are controlled by _.
a) program
b) drag
c) cam
d) plug board system
Answer – a
- Which coolant is used in turning of cast iron workpieces?
a) no coolant
b) water
c) soluble oil
d) straight cutting oil
Answer – a
- Which of the following is the hardest shearing tool material?
a) carbide
b) diamond
c) stellite
d) High Speed Steel
Answer – b
- The grooves made on the entire length of the twist drill are called _.
a) Margin
b) webs
c) flute
d) Lips
Answer – c
- Which of the following operation is done to make the hole more stick?
a) rinsing
b) tapping
c) boring
d) none of these
Answer = a
- Which of the following is a drill holding tool?
a) headstock
b) drill chuck
c) work table
d) none of these
Answer – b
- Which of the following is an advantage of using gauge?
a) saving time
b) increase in production
c) Both saving time and increasing production
d) none of these
Answer – c
- The jaw plate of a bench vice is made of _.
a) Tool steel
b) mild steel
c) Bronze
d) Cast iron
Ans. a
- The commonly used iron-saw blade is _ long.
a) 100 mm
b) 150 mm
c) 200 mm
d) 250 mm
Ans. d
- The tool used to cut the outer bangles is :-
a) End Mill
b) tap
c) dye
d) stock
Answer – c
- Which of the following is a component of high speed steel?
a) Carbon
b) tungsten
c) Chromium
d) All options
Answer – d
- Nurling is a _ operation.
a) cutting
b) turning
c) Forming
d) welding
Answer – c
- What is the purpose of using coolant among the following?
a) Cooling the cutting tool and workpiece
b) cooling the room
c) cooling the operator
d) none of these
Answer – a
- Which of the following is a measuring instrument?
a) chisel
b) Bench Vice
c) Steel Rule
d) sand
Answer – c
- What is the value of the angle of the tip in a center punch?
a) 300
b) 600
c) 900
d) 1200
Ans. c
- The distance between the adjacent teeth of a hexa blade is known as _ of the blade.
a) pitch
b) frame
c) wing nut
d) Teng
Answer – a
- A steel scale is _.
a) Direct reading measuring instrument
b) precision measuring instrument
c) marking machine
d) test device
Answer – a
- The reading accuracy of a steel scale is _.
a) 1.0 mm
b) 0.5 mm
c) 0.2 mm
d) 0.05 mm
Ans. b
- Whose arrangement should be kept for extinguishing the fire in the workshop?
a) fire extinguisher
b) buckets full of water
c) buckets full of sand
d) All options
Answer – d
- The box in which common medicine, cotton, bandage etc. is kept is called _ box.
a) mold
b) coolant
c) first aid
d) tools
Answer – c
- The value of the under angle for Acme bangle is _.
a) 400
b) 190
c) 290
d) 750
Ans. c
- External bangle can be produced through _.
a) lathe machine
b) drill machine
c) grinder
d) pipe cutter
Answer – a