Engineering :: Thermodynamics

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101.

Clog point of an oil is

A.	The point of maximum contamination of oil	B.	The level of impurities beyond which oil ceases to flow
C.	The temperature at which oil solidifies	D.	The temperature at which paraffin and waxes in oil start precipitating
E.	None of the above

102.

According to kinetic theory of heat

A.	Temperature should rise during boiling	B.	Temperature should fall during freezing
C.	At low temperatures all bodies are in solid state	D.	At absolute zero there is absolute no vibration of molecules
E.	None of the above

103.

The efficiency of a Carnot engine is given as 0.75. If the cycle direction is reversed, what will be the value of COP of reversed Carnot cycle

A.	0.75	B.	1.33
C.	0.33	D.	0.25
E.	4

104.

When a direct current is passed through a junction of two dissimilar metals, the junction becomes either cold or hot. The phenomenon is known as

A.	Peltier's effect	B.	Seeback's effect
C.	Thompson effect	D.	Maxwell's effect
E.	Faraday's law

105.

The process that follows the equation pvn = constant, is called

A.	Constant volume process	B.	Constant pressure process
C.	Constant temperature process	D.	Adiabatic process
E.	Polytropic process

106.

The statement that the volume of a mixture of ideal gases is equal to the span of the partial volumes which the constituent gases would occupy if each existed alone at the pressure and temperature of the mixture, is known as

A.	Maxwell's law	B.	Leduc's law
C.	Daltons law	D.	Clapeyrons law
E.	Clausius law

107.

The relation of the vapour pressure to the enthalpy of vaporization is expressed in

A.	Energy equation	B.	Van der Waal's equation
C.	Gas equation	D.	Maxwell's equation
E.	Clausius Clapeyron equation

108.

The solubility of a gas in a liquid at small concentration is represented by

A.	Henry's law	B.	Roults law
C.	Claperyon equation	D.	Van der Waal's equation
E.	Joules equation

109.

The number of degrees of freedom in case of diatomic gases is

A.	2	B.	3
C.	4	D.	5
E.	6

110.

In case of ideal monoatomic gas, the ratio of specific heats Cp/Cv would be

A.	1	B.	1.33
C.	1.4	D.	1.41
E.	1.67