Navigate

If a carnot engine is working with source temperature at 227⁰C and sink

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 %.

AFMC2007
admin:

Related Questions

  1. Two cars A and B moving with same speed of 45 km/hr along same direction.
  2. A common emitter amplifier gives an output of 3 V for an input of 0.01 V.
  3. A simple pendulum has a time period T₁ when on the earth’s surface and T₂ When taken
  4. A person can see clearly objects only when they lie between 50 cm and 400 cm from
  5. Two planets at mean distances d₁ and d₂ from the sun have their frequencies n₁ and n₂