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Heat pump is a device which working in a cycle delivers energy from low temperature system
usually work or energy as required as input :

(A) Latent Heat (B) High Specific Heat
(C) Lower Enthalpy (D) Higher Temperature

We have defined the criterion of reversibility and discussed some factors that render a
process irreversible we have also started that it is impossible to have an engine of 100%
efficiency but we have not answered the question. What is the maximum value of thermal
efficiency if not?

(A) 75% (B) 65%

(C) 85% (D) 100%

The specific heat of a substance at a constant volume C, is defined as the rate of change of
specific internal energy with respect to temperature which with volume is held constant :

In the process occurs on account of a finite temperature gradient is called :
(^) Thermal irreversibility (B) Chemical irreversibility
(C) Mechanical Irreversibility (D)_ External Irreversibility

Steady flow means that the rates of flow of mass and change across the control surface are :
(A) Constant (B) Steady
(C) Equal (D) Safety

The conservation of mass if there is no accumulation of mass with in the control volume, the
mass flow rate entering must equal the mass flow rate leaving :

(A) ಗ್ಗ = 12 ®) W-W=1
© 17% 21 ௫) 17 +11 ‏1ے‎

Consider a reversible and an irreversible engine to operate between same limit :

(A) Temperature (B) Volume
(C) Mass (D) Entropy

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