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Question 31090
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Kinetic Theory and Thermodynamics: Thermodynamic Cycles MCQ

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Thermodynamic CyclesHardQuestion 31090

Question

Otto cycle (petrol engine) operates with:
  1. A
    Two isothermals and two adiabatics
  2. B
    Two adiabatics and two isochores
    Correct
  3. C
    Two isobars and two adiabatics
  4. D
    Two isochores and two isobars

Correct answer

Two adiabatics and two isochores

Explanation

Otto cycle: adiabatic compression → isochoric heat addition (spark ignition) → adiabatic expansion → isochoric heat rejection. Efficiency = 1 − 1/r^(γ−1) where r is compression ratio.

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