Previous year question paper for Machinist

Previous year question paper for Machinisht and Machinisht grinder 1st semester 2016

ITI-machinisT.blogspot.com

1.Safety is.........
A.nobodies business
 B.every bodies business
 C. somebodies business
 D.the organization business

 2.To put of “Class B" fire the type of fire extinguisher used is. . 
A.dry powder
 B.carbon dioxide
 C.jet of water
 D.foam Type

 3. Four basic categories of safety signs are available The meaning of “prohibition" sign.
 A. shows it must not be done
 B. shows what must be done
 C. warns the hazard or danger
 D. Gves information of safety provision

 4. The size of the dividers are specifed by the ......
 A. total length of legs
 B. distance between the points when fully opened
C. length of legs without points
 D. distance between the. “pivot and the point

 5. The scribors are made out of ......
 A. mild steel
 B. brass
 C.cast Iron
 D. high carbon steel

 6. The instrument used to mark parallel lines, parallel to the datum edge is .....
 A. jenny catiper
 B.divider
 C. outside caliper
 D.Inside calliper

 7. Name the punch used to locate the centre?
 A. Prick punch 30°
 B. Prick punch 60°
C. Centre punch
 D. Dot punch

 8. Different standard lengths of blade can be fitted into.... ..
 A.l Solid frame
 B. Adjustable frame(flat type)
 C. fixed frame
 D. rigid frame

 9. Which file is used for driling wood, Leather and other soft material?
 A. Singte cut tile
 B.Double cut file.
 C. Rasp cut file.
 D Curved cut file

10. The formul_a for calculating cutting speed is.....
 A. V=1000/πxDxN.
 B. V=1000xπ/DxN.
 C. V =DxN/πx1000
 D. V=πxDxN/1000

11. The process of heating and Cooling to change the structure 0f steel for obtaining the required properties is called..... A
 hardentng .
B normalising
C. heat treatment
 D. tempering

 12. The main purpose of annealing Is to
 A. increase the hardness
 B. increase the toughness
 C. Improve machinabitity
 D. improve distortion

 13. ISO metric coarse thread is designated as M12 x 125 What does '12' Indicate ?
 A. Major diameter
 B.Root diameter
 C. Pitch diameter
 D.Blank diameter

 14. The tapping drill size for M10 x 15 is
 A 8.2
 B 8.3
 C 8.4
 D 8.5 -.

 15. Accuracy or least count of a metric outside micrometer is
 A 0.1 mm
 B. 0.01 mm
 C 0.001 mm
 D 0.02 mm


 16. The least count of vernier caliper is (main scale = 49 division. vernier scale = 50 division)
 A 0.1 mm
 B 0.01 mm
 C 0.001 mm
 D 0.02 mm


 17. The purpose of the rake angle Is to
 A. prevent the flank of the tool rubbing with the work plece
 B. guide the chips away
 C. obtain a good surface finish
 D. Increase the life of the tool


 18. The angle marked “x" In the figure Is a

 A. cutting angle
 B. wedge angle
 C. front clearance angle
 D. rake angle


 19. Which lathe centre is used for supporting hollow end jobs?
 A. Tipped centre
 B. Ball centre
 C. Pipe centre
 D. Revolving centre

 20. The tapers are classified as self holding and quick realeasing tapers ?
A 3°
 B 4°
 C 5°
 D 6°

 21. The amount of taper setting angle in compound slide method is calculated by the formula is
A. tanQ =D/2Lxd.
 B. tanQ=D-d/2l
C. tanQ=2Lxd/D.
 D. tanQ=2LxD/d

 22. Which type of method is used in mass produdction of producing small lengthm taper?
 A. Form tool
B. Compound siide
 C. Tailstock off set
 D. Taper turning attachment

 23. Find the change gears required to cut a 3 mm pitch on a lathe, having a lead scrsw of 6 mm pitch
 A Driver/ Driven =45/120
 B Driver/ Driven = 60/120
 C Driver/Driven = 80/120
 D Driver/Driven =40/80

 24. Calculate the gears required to cut a 15 mm pitch on a lathe having lead screw of 5 mm pitch ?
 A. Driver /Driven = 20/ 100
 B. Driver / Driven = 30/ 100
 C. Driver Driven =40/120
 D. Driver / Driven =80 /120

 25. Which method of producing thread is shown in fig?

 A.Thread rolling
B.Thread grinding
C.Thread milling
D.Thread chasing