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. A high carbon steel has to be forged, which colour indicate the most suitable forging temperature?
A. Yellow red
B. Dark cherry red
C. white
D. Light yellow
2. If X + 3 Y = 8 and 2 X + 5 Y = 12 , the value of X & Y will be respectively:
A. - 4, 4
B. 3.5, 1
C. 1, 2
D. 2, 2
3. 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
4. Why do you hold a workpiece lengthwise while machining in a planning machine?
A. It is easier to load workpiece lengthwise
B. The idle time will be minimised
C. The surface quality will be improved
D. The tool life will be increased
5. A gear wheel has 36 teeth (z) and 3 mm module (m) its pitch diameter cutter?
A. 12 mm
B. 75 mm
C. 80 mm
D. 108 mm
6. A traveling steady is fixed on the saddle of a Lathe. What is the function of this steady rest?
A. To prevent bending of long shafts due to cutting forces
B. To avoid load on the lathe centres while turning long
C. To reduce the load on the cutting tool while turning
D. To enables to turn at higher cutting speeds than recommended
7. A finish cut is given to improve the surface finish of a rough milled workpiece?
A. Decrease cutting speed, feed rate and depth of cut
B. Increase feed rate, depth of cut and reduce cutting speed
C. Increase feed rate, depth of cut and cutting speed
D. Increase cutting speed, reduce feed rate and depth of cut
8. 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
9. 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
10. One solder is made of 45% of tin & 55% of lead, what will be the quantity of tin & lead in 28 kg of solder:
A. 12 & 16 Kg
B. 15.4 & 12.6 Kg
C. 12.6 & 15.4 Kg
D. 16 & 12 Kg
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. 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
13. While grinding and lapping cemented carbide tipped tool with diamond wheels a good flow of coolant should be directed to cover the grinding zone, the coolant suitable is?
A. Soluable oil
B. Mineral oil
C. Sulphurised oil
D. Mixture of paraffin and water
14. 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
15. In a shaping machine with mechanical driven ram the ram speed is not uniform?
A. At the beginning of the cutt9ing stroke
B. In the middle of the cutting stroke
C. At the end of the return stroke
D. In the middle of the return stroke
16. 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
17. A hole whose lower deviation is zero is called basic hole, which one of the following letters indicates basic hole?
A. E
B. F
C. G
D. H
18. 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
19. The temperature to which a work piece is heated depends on the material and the type of forging process, the temperature range for forging low carbon steel is?
A. 700 - 800 deg celsius
B. 650 - 920 deg celsius
C. 53.The temperature to which a work piece is heated depends on the material and the type of forging process, the temperature range for forging low carbon steel is?
D. 800 - 1300 deg celsius
20. Which famous explorer visited India in the late 13th century?
A. Vasco Da Gama
B. Marco Polo
C. Ferdinand Magellan
D. None of the above
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