Question
A reversible engine and an irreversible engine are working between the same temperatures. The efficiency of the ...........

Answer

(b)

Efficiency of reversible engine is greater, because there is no loss of heat.

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

A particle starts from origin $O$ from rest and moves with a uniform acceleration along the positive $x -$ axis. Identify all figures that correctly represent the motion qualitatively. ($a =$ acceleration, $v =$ velocity, $x =$ displacement, $t =$ time)
A body is projected vertically up with a speed $v_0$ in gravity. The average speed of the  body over a time $\frac{v_0}{g}$ calculated from the instant of projection is
A book is resting on a shelf that is undergoing vertical simple harmonic oscillations with an amplitude of $2.5 \,cm$. What is the minimum frequency of oscillation of the shelf for .......... $Hz$ the book will lose contact with the shelf? (Assume that, $g=10 \,ms ^{-2}$ )
When two isolated conductors $A$ and $B$ are connected by a conducting wire positive  charge will flow from :-
The r.m.s. speed of gas molecules is given by
If $\lambda_1$ and $\lambda_2$ denote the wavelengths of de Broglie waves for  electrons in the first and second Bohr orbits in a hydrogen atom, then $\lambda_1/\lambda_2$ is equal to 
A current loop consists of two identical semicircular parts each of radius $R,$ one lying in the $x-y$ plane and the other in $x-z$ plane. If the current in the loop is $i.$ The resultant magnetic field due to the two semicircular parts at their common centre is
Half life of radioactive element depends upon
Two thin dielectric slabs of dielectric constants $K_1$ and $K_2$ $(K_1 < K_2)$ are inserted between plates of a parallel plate capacitor, as shown in the figure. The variation of electric field $E$ between the plates with distance $d$ as measured from plate $P$ is correctly shown by
What is the power gain in $CE$ amplifier, where input resistance is $3\,k\Omega $ and load resistance $24\,k\Omega $ , given  $\beta  = 20$ ?