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 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
2. 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
3. A steel workpiece of height tensile strength is to be machined with a HSS milling cutter, which one of the following rake angles is best suited for the cutter?
A. 8"
B. 12"
C. 20"
D. 28"
4. The quality control allows at the most 0.4% defective parts, How many defective parts can be allowed in a production of 500 parts?
A. 1
B. 2
C. 10
D. 20
5. 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
6. 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
7. Which one of the bushes used in a drill jig and permits cutting tools of different diameters?
A. Press fit bushes
B. Removable bushes(slip)
C. Fixed removable bushes
D. Liner bushes
8. Which one of the following thread forms is provided in the threaded parts where the pressure acts on one flank of the threads during transmission?
A. V thread
B. Square thread
C. Knuckle thread
D. Buttress thread
9. Counter boring is done for?
A. Deburring hole ends
B. Enlarging holes to accurate size
C. Finishing cored holes
D. Accommodating socket head screws
10. 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
11. While machining cast iron coolant should be?
A. Dry air
B. Kerosence
C. Machine oil
D. soft water
12. Which company name is based on river name?
A. Samsung
B. Sony Ericsson
C. Nokia
D. HTC
13. After simplification of ( 3 / 4 ) + ( 2 / 5 ) - ( 7 / 20 ), we will get:
A. 19 / 40
B. 9 / 20
C. 4 / 5
D. 17 / 20
14. A main purpose of using worm and worm wheel drives in machines and their accessories is to?
A. Transmit large torque
B. Provide large speed reduction from worm shaft to worm wheel
C. Transmit higher speeds
D. Provide large speed reduction from worm wheel to worm shaft
15. It is commonly observed that the face of a grinding wheel becomes shiny and smooth or glazed after some use due to one of the reasons stated below?
A. Grade of wheel is too hard
B. Abrasive of the wheel not suitable for the purpose
C. Grain size is too coarse
D. Structure of the wheel is too open
16. 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
17. 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
18. The tooth thickness of rack is measured by?
A. Universal vernier caliper
B. Gear tooth vernier caliper
C. Flange micrometer
D. Gear tester
19. Various alloying elements are added to produce different alloy steels, which one of the following combination of alloying elements is using for HSS?
A. Chromium, nickel and molybdenum
B. Nickel, molybdenum and silicon
C. Chromium, vanadium and maganese
D. Chromium, vanadium and tungsten
20. Who drafted the Declaration of American Independence?
A. George Washington
B. Abraham Lincoln
C. Thomas Jefferson
D. Jhon F Kennedy
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