Which of the following statements is/are correct in any machine? I. The velocity ratio is usually greater than the mechanical advantage. II. Efficiency work inputwork outputIII. The velocity ratio is independent of friction.

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Which of the following statements is/are correct in any machine? I. The velocity ...

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Which of the following statements is/are correct in any machine?

I. The velocity ratio is usually greater than the mechanical advantage.
II. Efficiency work inputwork outputIII. The velocity ratio is independent of friction.

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A I only
B III only
C I and II only
D I and III only
E II and III only

Correct Answer: Option D

Explanation:

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Which of the following statements is/are correct in any machine? I. The velocity ...

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