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.Management Sciences
Category: Heat and Thermodynamics
At what temperature is the Fahrenheit scale reading equal to twice that of the Celsius scale?
A. 460°C
B. 280°C
C. 360°C
D. 160°C
For the successful operation of Heat engine which condition should be met ?
A. cyclic process
B. operated at certain temperature difference
C. both A and B
D. none of these
The scales of temperature are based on two fixed points which are_________________?
A. The temperatures of water at 0? 100?C
B. The temperature of melting ice and boiling water at atmospheric pressure
C. The temperatures of ice cold and boiling water
D. The temperatures of frozen and boiling mercury
The purpose of flywheel in the engines is________________?
A. to smooth out the energy variation
B. to add more weight to engine to work it stable
C. to start engine
D. both A and B
If the pressure of a given gas is held constant its density is inversely proportional to its absolute temperature. We can refer it as another statement of______________?
A. Boyles law
B. Charles law
C. Ideal gas law
D. Avagadros law
Which of the following properties of molecules of a gas is same for all gases at particular temperature ?
A. momentum
B. mass
C. velocity
D. kinetic energy
Which quantity is a state function_______________?
A. internal energy
B. heat supply
C. pressure
D. volume
Which one is not an example of adiabatic process ?
A. rapid escape of air from a burst tyre
B. rapid expansion of air
C. conversion of water into ice in refrigerator
D. cloud formation in the atmosphere
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