engineering physics MCQ #2799

A gas is heated at constant pressure. The fraction of heat energy used to do work is

engineering physics MCQ #2799

  1. Question 1

    Q1. A gas is heated at constant pressure. The fraction of heat energy used to do work is

    • A) R / Cp
    • B) Cp / R
    • C) R / Cv
    • D) Cv / R

    Answer: R / Cp

    Explanation: Fraction of heat used to do work = W / Q = (nRΔT) / (nCpΔT) = R / Cp.