(A) Always greater than 100% (X)
(B) Always less than 100% (✔)
(C) Always 100% (X)
(D) None of these (X)
Answer: The efficiency of a machine is always less than 100%.
(A) Always greater than 100% (X)
(B) Always less than 100% (✔)
(C) Always 100% (X)
(D) None of these (X)
Answer: The efficiency of a machine is always less than 100%.
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