A motor of a corn mill machine operates on electrical energy of 1.44×10 5 J.
PHYSICS
WAEC 2017
A motor of a corn mill machine operates on electrical energy of 1.44×105J. If one-quarter of the energy is wasted on sound and heat, determine the efficiency of the machine.
- A. 25%
- B. 36%
- C. 64%
- D. 75%
Correct Answer: D. 75%
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