On volume basis, air contains following parts of oxygen _____________________?
On volume basis, air contains following parts of oxygen _____________________?
A. 21
B. 23
C. 25
D. 77
E. 79
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A heat exchange process in which the product of pressure and volume remains constant is known as_______________?
A heat exchange process in which the product of pressure and volume remains constant is known as_______________?A. heat exchange process
B. throttling process
C. isentropic process
D. adiabatic process
E. hyperbolic processThe cycle in which heat is supplied at constant volume and rejected at constant pressure is known as_________________?
The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as_________________?A. Dual combustion cycle
B. Diesel cycle
C. Atkinson cycle
D. Rankine cycle
E. Stirling cycleNo liquid can exist as liquid at____________________?
No liquid can exist as liquid at____________________?A. – 273 °K
B. vacuum
C. zero pressure
D. centre of earth
E. in spaceCalorie is a measure of
Calorie is a measure ofA. specific heat
B. quantity of heat
C. thermal capacity
D. entropy
E. workThe thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that___________________?
The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that___________________?A. carnot cycle can’t work with saturated steam
B. heat is supplied to water at temperature below the maximum temperature of the cycle
C. a rankine cycle receives heat at two places
D. rankine cycle is hypothetical
E. none of the aboveAccording to Clausis statement of second law of thermodynamics___________________?
According to Clausis statement of second law of thermodynamics___________________?A. heat can’t be transferred from low temperature source to high temperature source
B. heat can be transferred for low temperature to high temperature source by using refrigeration cycle.
C. heat can be transferred from low temperature to high temperature source if COP of process is more than unity
D. heat can’t be transferred from low temperature to high temperature source without the aid of external energy
E. all of the above