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. If A : B = 1 : 2 and B : C = 4 : 5 then the ratio between A : B : C will be:
A. 1 : 2 : 4
B. 2 : 4 : 5
C. 3 : 4 : 5
D. 4 : 5 : 6
2. It is required to machine a single start worm of 2 module (m) and 60 mm pitch diameter, the speed ration is 40:1, to what length should the worm be cut?
A. 21 mm
B. 14.6 mm
C. 29.3 mm
D. 33.3 mm
3. The normal module of a helical gear with real module (m) of 6.62 and having an angle of 25 deg is?
A. 6.62 x sin 25 deg
B. 6.62 x cos 25 deg
C. 2.The normal module of a helical gear with real module (m) of 6.62 and having an angle of 25 deg is?
D. 6.62 x tan 25 deg
4. What will be the result if the clearance angle in drill is increased?
A. Poor wedging action
B. Weak cutting edge
C. Rough hole surface
D. Increased point angle
5. The Election commission of India situated in _______?
A. Mumbai
B. Chennai
C. New Delhi
D. Kolkata
6. 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
7. Which one of the following is an artificial abrasive?
A. Emery
B. diamond
C. Corundum
D. Silicon carbide
8. Which one of the following operations can be done on slotting machine?
A. External keyway on long shaft
B. Internal grooves
C. Woodruff keyway on a shaft
D. Keyway for feather keys
9. The result obtained by dividing 0.18 by 0.09 will be:
A. 0.2
B. 0.02
C. 2
D. 20
10. Thread measurement with inserts fitted in the anvil and spindle of screw tread micrometer are selected on the basis of one the following elements of a thread being measured?
A. Major diameter
B. Minor diameter
C. Effective diameter
D. Pitch
11. You have to file an aluminum block to a smooth finish, which one of the following cut of file is most suitable?
A. Double cut
B. Curved cut
C. Rasp cut
D. Single cut
12. 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
13. CNC machine are not manually operated. They are controlled by means of?
A. A programme
B. An operating
C. A cam
D. A plug board system
14. Washing soda is the common name for
A. Sodium Carbonate
B. Calcium Bicarbonate
C. Sodium Bicarbonate
D. Calcium Carbonate
15. One which unit the tool setting is done on NC machine?
A. On special devices away from the machine
B. On the NC machine during idle time
C. On the pre setting devices
D. None of above
16. Slip gauges are used as standards for precision length measurements, the slip gauges are available in four grades as per BIS standard, which one of the following grades is meant only for reference?
A. 0 grade
B. 1 grade
C. 00 grade
D. 11 grade
17. The lead screw pitch of a milling machine is 5mm and the dividing head ratio is 40 : 1 the lead of the milling machine is?
A. 0.125 mm
B. 5 mm
C. 8 mm
D. 200 mm
18. A gear wheel has 36 teeth and 3 mm module, its pitch diameter is?
A. 12 mm
B. 75 mm
C. 80 mm
D. 108 mm
19. A Shaft is turned in one finish cut which one of the following parameters will directly influence the machining time?
A. Cutting depth
B. Setting angle
C. Diameter of work piece
D. Tool travel distance
20. Which one of the following equipments is used in the shop floor for the checking of the form that is being turned?
A. Template
B. Snap gauge
C. Dial test indicator and slip gauges
D. Tool room microscope
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