Question
Write the main points of efficiency of Carnot engine.

Answer

Main points of efficiency :
(i) Efficiency does not depend on the working substance.
(ii) Efficiency is greater when the temperature difference between source and sink is greater. It occurs, but it is always less than $100 \%$.
(iii) The efficiency of the Carnot engine depend only on the temperature of the source and the sink
(iv) All reversible (ideal) engines working between two equal temperature have the same efficiency.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

At what temperature will the average velocity of oxygen molecules be sufficient so as to escape from the earth? Escape velocity from the earth is 11.0km/sec and the mass of one molecule of oxygen is 5.34 × 10-26kg (Boltzmann constant k = 1.38 × 10-23 Joule/K).
A vertical cylinder of height 100cm contains air at a constant temperature. The top is closed by a frictionless light piston. The atmospheric pressure is equal to 75cm of mercury. Mercury is slowly poured over the piston. Find the maximum height of the mercury column that can be put on the piston.
Find the magnetic field B due to a semicircular wire of radius 10.0cm carrying a current of 5.0A at its centre of curvature.
Consider the fusion in helium plasma. Find the temperature at which the average thermal energy 1.5kT equals the Coulomb potential energy at 2fm.
Answer the following :
What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale?
A body of mass ‘m' suspended from a spring executes S.H.M. Calculate the ratio of the kinetic energy and potential energy of the body when it is at half the amplitude far from the mean position.
On a certain day, speed of sound in air is 350m/s. What is the frequency of fundamental note in a closed pipe of length 0.5m? Also find the frequency of second overtone.
A small spherical ball is released from a point at a height h on a rough track shown in figure. Assuming that it does not slip anywhere, find its linear speed when it rolls on the horizontal part of the track.

An ideal engine works between temperatures T1 and T2. It derives an ideal refrigerator that works between temperatures T3 and T4. Find the ratio $\frac{\text{Q}_3}{\text{Q}_1}$ in terms of T1, T2, T3 and T4.

What is meant by monochromatic emittance, emissive power, emissivity and monochromatic absorbtance.