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. H.S.S. is tempered at
A. 220°C to 230°C
B. 230°C to 270°C
C. 280°C to 400°C
D. 550°C to 600°C
2. Thread ring gauges are used check external threads. Separate 'Go' and 'No Go' gauging members are provided. Which one of the following screw thread elements is not checked with the ring gauges?
A. Pitch
B. Helix angle
C. Profile
D. Pitch diameter
3. How many jaws do exist in Bunch-vise?
A. one
B. Two
C. Three
D. Four
4. Bent snip is used for
A. Removing the burr
B. Making holes on the sheet
C. Bending the sheet
D. Cutting the sheet along curved lines
5. Which one of the following processes can produce high alloy steel with accurately specified chemical composition?
A. Bessemer process
B. Open hearth furnace
C. Electric arc process
D. Crucible process
6. The taper provided in the nose of the tailstock barrel is
A. Morse taper
B. Jarno taper
C. Brown and Sharpe taper
D. Metric taper
7. Which one of the following methods of catching the threads consumes more time when cutting odd pitch threads ?
A. Using thread-chasing dial
B. Reversing the machine
C. Marking the work holding device and lead screw
D. Pre-determined travel of the carriage
8. The carriage in a lathe moves
A. Parallel to the axis of rotation
B. At any angle to the axis of rotation
C. Perpendicular to the axis of rotation
D. A or B
9. Which one of the following materials is used for manufacturing centre drills ?
A. Cast steel
B. Mild steel
C. High speed steel
D. Cast iron
10. Best example of splash lubricant is :
A. Ring lubricator
B. Wick feed lubricator
C. Grease gun
D. Pump lubricator
11. Best position to hold the job in the vice when filing is
A. eye level
B. shoulder level
C. elbow level
D. arm level
12. Correct flame for preheating before cutting is
A. oxidizing flame
B. neutral flame
C. carburising flame
D. slightly carburizing flame
13. Which one of the following is used for checking run out of the internal taper of machine spindle ?
A. Dial test indicator
B. Test mandrel and dial test indicator
C. Precision height gauge
D. Test mandrel and precision height gauge
14. A concrete mixture ratio is given as 1 : 2 : 4. Which one of the following indicates these numbers ?
A. One part cement, two parts sand and four parts stone.
B. One part stone, two parts cement and four parts sand.
C. One part sand, two parts stone and four parts cement.
D. One part cement, two parts stone and four parts sand.
15. The soft material particles get clogged in the grinding wheel while grinding. This is called...
A. Truing
B. Loading
C. Glazing
D. Dressing
16. A screw thread is formed on a cylindrical surface by cutting
A. Helical grooves
B. V-grooves
C. Square grooves
D. Half round grooves
17. Which one of the following tool angle is provided to avoid rubbing of the body of the tool with the workpiece?
A. Rake angle
B. Helix angle
C. Clearance angle
D. None of the above
18. By which one of the following, a multi-start thread is cut on a lathe ?
A. By a chaser
B. By a die head
C. By a single-point tool
D. By a split die
19. Different threads have got different depths. Which one of the following has got the highest depth ?
A. Square
B. Acme
C. Worm
D. Buttress
20. Soldering is initiated with
A. Floating
B. Tacking
C. Tinning
D. Fluxing
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