List of top Mechanical Engineering Questions on Thermodynamics asked in Telangana State Post Graduate Engineering Common Entrance Test

Calculate the efficiency of a Carnot engine operating between temperatures of 500K and 300K.
Choose the correct statement with respect to the impulse steam turbine operated based on Rankine cycle
The incorporation of intercooling system between low-pressure and high-pressure compressors of Brayton cycle
The ratio of speed of a Pelton wheel and the speed of the jet for maximum head efficiency is
According to the Joules law of a perfect gas, the internal energy is a function of
The volumetric efficiency of a reciprocating compressor has the clearance ratio 'k' and the pressure ratio p2/p1 is calculated by using the following equation
Generally, the rotary compressors are used for delivering the following conditions:
The air standard efficiency of the Diesel cycle reaches that of the Otto cycle when the following condition is satisfied:
For the same compression ratio and heat rejection, the thermal efficiency is:
During the compression process of a vapor compression refrigeration system:
Consider the following statement and choose the correct one I. Dew point is reached by cooling the air at constant moisture content
II. Wet bulb temperature changes by addition of moisture at constant enthalpy
III. For saturated air, dry bulb, wet bulb and dew point temperatures are same
IV. Dehumidification of air is achieved by heating
The COP of heat pump in comparison with COP of refrigeration cycle for the specified temperature limits is given by
In a polytropic process, heat rejected is given by
“Heat cannot flow by itself from a body at lower temperature to a body at higher temperature” and can be done by the supply of external work is
2 kg of a substance receives 500 kJ heat and undergoes a temperature change from 100 $^\circ$C to 200 $^\circ$C. The average specific heat of the substance during the process (in kJ/kg K) will be
The equation for the state of real gas in terms of reduced form is
A reversible engine is being operated with the temperature limits of 800 K and 300 K. If it takes heat 560 kJ, then the available energy and unavailable energy are
Radiation heat transfer in the system is characterized by
The slope of curve on p-V diagram for different processes