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If a carnot engine is working with source temperature at 227⁰C and sink temperature at 27⁰C, its efficiency will be
Options
(a) 40%
(b) 10%
(c) 67%
(d) 50%
Correct Answer:
40%
Explanation:
Efficiency of a Carnot engine η = 1 – (T₂ / T₁)
where T₁ is the temperature of the source and T₂ is the temperature of the sink.
Here, T₁ = 227°C = 500 K
T₂ = 27°C = 300 K
.·. η = 1 – (300/500) = 2/5 = 40 %.
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The root mean square speed of oxygen molecule (O₂) at a certain temperature is v.
- In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
- An α-particle of energy 5 MeV is scattered through 180⁰ by a fixed uranium nucleus.
- Two stones of masses m and 2m are whirled in horizontal circles, the heavier one
- An electric charge 10⁻³ μC is placed at the origin (0,0) of X-Y co-ordinate system.
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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