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. Least count of metric micrometer is
A. 0.01 mm
B. 0.05 mm
C. 0.10 mm
D. 0.50 mm
2. After heating upto required hardening temperature, why must tool steels be quenched ?
A. To induce internal stresses
B. To build up hardening structure
C. To fall off the scale
D. To return it to its original structure
3. Taper shank drills should be removed from the machine spindle by means of
A. hammer
B. tang of file
C. punch
D. drift
4. Cutting tool used to finish and enlarge a hole is known as
A. Drill
B. Tap
C. Die
D. Reamer
5. 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
6. The axis of the plate cam blank and the end mill spindle should always remain?
A. Inclined to each other
B. Parallel to each other
C. Opposite to each other
D. Vertical and inclined
7. Drill chucks are held on the machine spindle by means of
A. arbor
B. drift
C. draw-in bar
D. chuck nut
8. Which of the following metals can be found in a pure state in nature?
A. Lithium
B. Iron
C. Gold
D. Aluminium
9. Which one of the following statements in respect of eccentric turning is correct ?
A. In an eccentric shaft, the centres of the individual diameters are displaced
B. Eccentric shaft can be turned by holding it in a three-jaw chuck
C. Higher speed is chosen for eccentric turning
D. It is preferred to give more depth of cut in the beginning while turning an eccentric shaft
10. The web of twist drill, due to repeated grinding causes resistance to feeding while drilling a 12 mm diameter hole, the above effect is reduced by providing?
A. Negative rake of web
B. Thinning of web
C. Less feeding force
D. More feeding force
11. Fine facing is done by feeding the tool
A. from centre to the periphery of the job
B. from periphery to the centre of the job
C. A or B
D. None of these
12. Which among the following statements in respect of the lathe cutting tools is correct ?
A. Red hotness temperature is higher for high carbon steel tool than that of carbide tool
B. The property of tool chipping off with vibration is more for cemented carbide tools than that of HSS tools
C. Ceramic tool has more resistance to shock as compared to HSS tool
D. HSS tool can work at more spindle speed and feed than cemented carbide tool
13. Which of the following tasks is performed by a Bench fitter?
A. Measuring
B. Maintenance
C. Filing
D. All these
14. The fingers of a fixed steady rest are set to support a lengthy workpiece held in a four-jaw chuck. The fingers are adjusted and set when the workpiece is
A. Trued to the chuck and the work is stationary.
B. Trued at the tailstock and when the work is running at slow rpm.
C. Trued at both ends and work is stationary.
D. Trued at both ends when the work is running at slow rpm.
15. In case of an accident, the victim should immediately be
A. asked to take rest
B. enquired about the accident
C. attended to immediately
D. left to himself without treatment
16. Solid milling cutters are manufactured from
A. Sintered carbide
B. H.S.S.
C. Ceramic
D. Stellite
17. Which of the following isn’t the property of taper roller?
A. High rigidity
B. Easy dismantling
C. Take low radial and heavy loads
D. All are the properties of tapper roller
18. While gas cutting the nozzle should
A. almost touch the work
B. be 10 mm away from work
C. be 2 mm away from work
D. be 5 mm away from work
19. What do Files do to metal sheet surface?
A. Rough
B. Finish
C. Cutting
D. Bending
20. Which one of the following angles of rough turning tool, depends upon the feed rate chosen ?
A. Top rake angle
B. Side rake angle
C. Front clearance angle
D. Side clearance angle
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