Engineering :: Thermodynamics

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241.

"Heat can flow from cold substance to hot substance with the aid of external work". Which of the following name is associated with the above statement?

A.	Clausius	B.	Joule
C.	Kelvin	D.	Planck
E.	Gay Lussac

242.

For water which of the following will be reduced to zero at critical pressure?

A.	Specific volume	B.	Enthalpy
C.	Internal energy	D.	Latent heat of vaporisation
E.	None of the above

243.

Heating wet steam at constant temperature is same as heating at

A.	Constant pressure	B.	Constant volume
C.	Constant enthalpy	D.	Constant entropy
E.	None of the above

244.

A gs which satisfies the Kinetic theory of gases is known as

A.	Manoatomic gas	B.	Diatomic gas
C.	Real gas	D.	Perfect gas
E.	None of the above

245.

If during a process the entropy of a isolated system increases, the process is

A.	Ideal	B.	Reversible
C.	Irreversible	D.	Polytropic
E.	None of the above

246.

Which of the following is a reversible process?

A.	Free expansion	B.	Throttling
C.	Combustion	D.	Diffusion
E.	Extension and compression of a spring

247.

If a system neither exchange mass nor energy with the surroundings, it is known as

A.	Segregated system	B.	Semi-closed system
C.	Closed system	D.	Isolated system
E.	Inactive system

248.

Thermei is

A.	A unit of temperature measurement	B.	A unit of latent heat
C.	A semi-conductor	D.	An impurity added to a semi-conductor
E.	Quantity of heat required to raise temperature of one tonne of water from 14.5?C to 15.5?C

249.

In a reversible polytropic process

A.	Some heat transfer occurs	B.	Entropy remains constant
C.	Enthalpy remains constant	D.	Internal energy remains constant
E.	None of the above

250.

One bar pressure is the same as

A.	1 N/m2	B.	100 N/m2
C.	1000 N/m2	D.	100,000 N/m2
E.	1000,000 N/m2