List of top Physics Questions on Thermodynamics asked in Andhra Pradesh Engi Agriculture & Pharmacy CET

A Carnot engine has the same efficiency between 800 K and 500 K, and x>600 x>600 K and 600 K. The value of x x is:
The efficiency of a Carnot cycle is 16 \frac{1}{6} . By lowering the temperature of the sink by 65 K, it increases to 13 \frac{1}{3} . The initial and final temperature of the sink are:
In a cold storage, ice melts at the rate of 2 kg per hour when the external temperature is 20°C. The minimum power output of the motor used to drive the refrigerator which just prevents the ice from melting is (latent heat of fusion of ice = 80 cal g−1^{-1})
An ideal gas is found to obey PV32=constant PV^{\frac{3}{2}} = \text{constant} during an adiabatic process. If such a gas initially at a temperature T T is adiabatically compressed to 14 \frac{1}{4} th of its volume, then its final temperature is:
The efficiency of a Carnot engine is found to increase from 25\% to 40\% on increasing the temperature (T1T_1) of the source alone through 100 K. The temperature (T2T_2) of the sink is given by:
The condition dw=dq dw = dq holds good in the following process:

Match the following (f is the number of degrees of freedom):

Monoatomic Diatomic (rigid) Diatomic Polyatomic (non-rigid)