HORTICULTURE SCIENCE
FARM POWER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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20%
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40%
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60%
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80%
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Detailed explanation-1: -SOLVED: What is the mechanical efficiency of an engine having a brake horsepower of 8 hp and an indicated horsepower of 10 hp? Ans. 80%
Detailed explanation-2: -Therefore, the mechanical efficiency of an engine will be highest when the engine is running at the speed at which maximum bhp is developed. Since power output is bhp, and the maximum horsepower available is ihp, then Mechanical Efficiency = ( bhp/ihp) × 100.
Detailed explanation-3: -Brake or shaft horsepower is less than indicated horsepower by the amount of power lost to friction within the engine itself, which may amount to 10 percent or more of the indicated horsepower.
Detailed explanation-4: -The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5, 252.