An engine at full load delivers 200 kW brake power. It requires 25 kW – McqOptions

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1.	An engine at full load delivers 200 kW brake power. It requires 25 kW to rotate it without fuel at the same speed. The mechanical efficiency at half load is:
A.	80 %
B.	50 %
C.	25 %
D.	66.7 %
Answer» B. 50 %

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