Discussion
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- Question
Which of the following statement is wrong?
Options- A. The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts
- B. The V-belt drive is used with large centre distance
- C. The V-belt may be operated in either direction with tight side of the belt at the top or bottom
- D. The ratio of driving tensions in V-belt drive is more than flat belt drives
- Correct Answer
- The V-belt drive is used with large centre distance
- 1. A crankshaft is a __________ shaft.
Options- A. transmission
- B. machine Discuss
- 2. The load cup of a screw jack is made separate from the head of the spindle to
Options- A. enhance the load carrying capacity of the jack
- B. reduce the effort needed for lifting the working load
- C. prevent the rotation of load being lifted
- D. reduce the value of frictional torque Discuss
- 3. Surface endurance limit of gear material is dependent upon its
Options- A. elastic strength
- B. yield strength
- C. brinell hardness number
- D. toughness Discuss
- 4. Circumferential joint in boilers is used to get the required length of a boiler.
Options- A. True
- B. False Discuss
- 5. According to Guest's theory, the failure occurs at a point in a member when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in simple tension test.
Options- A. True
- B. False Discuss
- 6. The ball bearings are provided with a cage
Options- A. to reduce friction
- B. to facilitate slipping of balls
- C. to prevent the lubricant from flowing out
- D. to maintain the balls at a fixed distance apart Discuss
- 7. The centre distance between two meshing involute gears is equal to
Options- A.
- B.
- C.
- D.
Discuss
- 8. The toughness of a material __________ when it is heated.
Options- A. increases
- B. decreases
- C. does not change Discuss
- 9. In a flange coupling, the flanges are coupled together by means of
Options- A. bolts and nuts
- B. studs
- C. headless taper bolts
- D. none of these Discuss
- 10. Which of the following material has the maximum ductility?
Options- A. Mild steel
- B. Copper
- C. Zinc
- D. Aluminium Discuss
Machine Design problems
Search Results
Correct Answer: machine
Correct Answer: prevent the rotation of load being lifted
Correct Answer: brinell hardness number
Correct Answer: True
Correct Answer: True
Correct Answer: to maintain the balls at a fixed distance apart
Correct Answer:
Correct Answer: decreases
Correct Answer: bolts and nuts
Correct Answer: Mild steel
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