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Select the incorrect statement : (a) A machine always has the efficiency less than 100%. (b) The mechanical advantage of a machine can be less than 1. (c) A machine can be used as a speed multiplier. (d) A machine can have the mechanical advantage greater than the velocity ratio. |
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Answer» Select the incorrect statement : (a) A machine always has the efficiency less than 100%. (b) The mechanical advantage of a machine can be less than 1. (c) A machine can be used as a speed multiplier. (d) A machine can have the mechanical advantage greater than the velocity ratio. |
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