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Regular oiling of parts increases their...

Regular oiling of parts increases their

A

Output work

B

Efficiency

C

Mechanical advantage

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Oiling the machinery reduces friction and so there will be less energy lost. Hence the ouput work also increases and so the efficiency of the machine increases.
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PEARSON IIT JEE FOUNDATION-THE MACHANISM OF MACHINES-VERY SHORT ANSWER TYPE QUSETIONS
  1. Work done by a machine equals to .

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  2. A rod which is free to move around a point is called.

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  3. See-saw is an example of order lever.

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  4. If the mechanical advantage of a lever is equal to 1, then the effort ...

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  5. If the slope of an inclined plane is steeper, the effort required to p...

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  6. If MA of a simple machine is greater than 1, then effort arm is than ...

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  7. For order lever, mechanical advantage (MA) is always greater than 1.

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  8. For a single movable pulley, MA is .

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  9. Forceps are an example of order lever.

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  10. If mechanical advantages of two inclined planes A and B are in the rat...

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  11. If the effort arm of a lever is twice of its load arm, it is a .

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  12. Name a machine which can be used to : change the direction of force ...

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  13. which of the following is wrong?

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  14. Which of the following planes cannot be used to push load to a certain...

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  15. If load is between the fulcrum and effort of a lever, it is called or...

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  16. Efficiency of an ideal machine is .

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  17. Which of the following is an example of wedge?

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  18. Ghat road is an example of

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  19. What is the principle used in wheel and axle? Mention its applications...

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  20. Regular oiling of parts increases their

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