Which of the following is used to reduce friction in a rotating machine?

wheels

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rollers

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ball bearing

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polishing

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Solution

The correct option is C ball bearing
Ball bearing are used in rotating machine parts to reduce rolling friction.

Option C is correct.

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Similar questions

Of the following statements choose the correct statement :
A) Grease is used to reduce friction in the bicycle chain.
B) Ball bearings are used to reduce friction in a fan.
C) Oil can be used to increase friction in a car engine.
D) Talc can be used to reduce friction in a carrom board.

Of the following statements choose the correct combination that helps reduce friction:
A) Grease is used to reduce friction in bicycle chain
B) Ball bearings are used to reduced friction in a fan
C) Oil can be used to increase friction in a car engine
D) Talc can be used to reduce friction when an object is sliding on a surface.

Which of the following is NOT used to reduce friction?

Q. Choose the correct statement from the following:

1. Grease is used to reduce friction in the bicycle chain.
2. Ball bearings are used to reduce friction in a fan.
3. Oil is used to increase friction in car parts.
4. Talcum powder is used to reduce friction on a carrom board.

Which of the following should be used to reduce friction on a carrom board?

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Which of the following is used to reduce friction in a rotating machine?

The correct option is C ball bearingBall bearing are used in rotating machine parts to reduce rolling friction.Option C is correct.

The correct option is C ball bearing
Ball bearing are used in rotating machine parts to reduce rolling friction.

Option C is correct.