A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. Slots are provided on angle plate for
A. accommodating bolts
B. hanging with hooks
C. reducing weight
D. aligning the work
2. The tool post of a planning machine is mounted on?
A. Apron
B. Cross rail
C. Clapper box
D. Saddle
3. What is produced when Aluminium is oxidized with water?
A. Hydrogen
B. Oxygen
C. Nitrogen
D. Carbon dioxide
4. The shape of the frame of thread snap gauge is in theform of
A. Round
B. Square
C. 'Y'type
D. "C"type
5. A 42 teeth involute helical gear with a helix angle of 45 deg is to be cut on a milling machine?
A. 12 to 13
B. 35 to 54
C. 135 to rake
D. 17 to 20
6. Which one of the following is used to hold the workpiece for machining diameter concentric to its hole / bore?
A. Face plate
B. Mandrel
C. Three-jaw chuck
D. Four-jaw chuck
7. Least count of the vernier caliper is equal to
A. value of 1 MSD- value of 1 VSD
B. value of 1 VSD- value of 1 MSD
C. value of 2 MSD- value of 1 VSD
D. value of 1 MSD+ value of 1 VSD
8. Dressing and truing of a grinding wheel are
A. exactly the same operation
B. done with the same equipment
C. done only for coarse grinding wheels
D. only for form grinding wheels
9. As the diameter of the workpiece decreases, the spindle speed (for the same cutting speed)
A. increases
B. decreases
C. remains the same
D. none of the above
10. In case of a single cut file, the teeth are cut on the file face at an angle of
A. 45° to the centre line of the file
B. 60° to the centre line of the file
C. 75° to the centre line of the file
D. 80° to the centre line of the file
11. Tool, Which is used for laying out large circle is
A. Trammel
B. Divider
C. Jenny caliper
D. Scriber
12. Which among the following is an artificial abrasive ?
A. Aluminium oxide
B. Emery
C. Diamond
D. Corundum
13. Given component cracked after heat treatment. What can be the possible reason ?
A. It was heated for long time
B. It was not properly cleaned before heating
C. It was suddenly cooled in brine
D. It was slowly cooled in air
14. Which among the following is the cause for incorrect pitch of thread during thread cutting with single point tool?
A. Incorrect selection of change gears
B. Lead screw worn out
C. Half nut worn out
D. Any one of the above
15. Which taper is used on spindle nose of the lathe head stock?
A. Jerno taper
B. Brown and sharp taper
C. Pin taper
D. Morse taper
16. Which one of the following operations is performed when bottom swage and top fuller are used together ?
A. Hollowing
B. Drawing out
C. Jumping
D. Bending
17. Morse taper is one of the internationally accepted standard tapers. The morse taper are available in numbers from?
A. 0 to 7
B. 0 to 8
C. 1 to 7
D. 1 to 8
18. The angle of I.S. thread (V-shaped) is
A. 29°
B. 471/2°
C. 50°
D. 60°
19. On which part of the vernier bevel protractor, are the main scale divisions graduated ?
A. Blade
B. Disc
C. Dial
D. Stock
20. Which among the following statements is suitable to get better finish by turning ?
A. Increase the speed and feed
B. Reduce the speed and feed
C. Increase the speed and reduce the feed
D. Increase the feed and reduce the speed
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc