| ⇦ | 
| ⇨ |
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 %.
Related Questions: - A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass
- The magnetic moment has dimensions of
- The time by a photoelectron to come out after the photon strikes is approximately
- In a tangent galvanometer, a current of 0.1 A produces a deflection of 30⁰.
- The resistance of a carbon resistor of colour code Red-Red Green Silver is(in kΩ)
Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass
- The magnetic moment has dimensions of
- The time by a photoelectron to come out after the photon strikes is approximately
- In a tangent galvanometer, a current of 0.1 A produces a deflection of 30⁰.
- The resistance of a carbon resistor of colour code Red-Red Green Silver is(in kΩ)
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply