Allied & ICAR Exam Bank • ALLIED_0263 MCQ • 1 Mark

Section 3: Farm Power

Farm Power

Subtopic: Power efficiencies and measurement, engine performance curves

Question Statement:

Brake mean effective pressure ($bmep$) is related to indicated mean effective pressure ($imep$) and mechanical efficiency ($\eta_m$) by:

Options:

  • (A) $bmep = imep \times \eta_m$
  • (B) $bmep = imep / \eta_m$
  • (C) $bmep = imep + \eta_m$
  • (D) $bmep = imep - \eta_m$

Answer Key:

A

Step-by-Step Solution & Explanation

Since $BP = IP \times \eta_m$, dividing both sides by displacement and speed gives $bmep = imep \times \eta_m$.
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