Engineering :: Heat Transfer

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111.

The factor which affects nucleate pool boiling is

A.	Material of heating surface	B.	Surface condition of heating surface
C.	Physical properties of liquid	D.	Pressure
E.	All of the above

112.

If the roof of a house is painted with a shiny metallic paint, the temperature inside will

113.

The mass of water vapour per kg of the pressure of saturated vapour at the air is known as

114.

The ratio of the actual vapour pressure to the pressure of saturated vapour at the prevailing dry bulb temperature is known as

115.

In a psychrometric chart the abscissa represents

116.

A liquid is boiling in a a air tight vessel. Using an exhaust tube, the vapour is pumped out at a faster rate. What happens to the liquid?

A.	Temperature goes down, doiling continues	B.	Temperature goes up, boiling continues
C.	Temperature goes down, boiling stops	D.	Temperature goes up, boiling stops
E.	Nothing changes

117.

What energy transformation takes place when ice and salt mixture is converted into water

A.	Heat energy to kinetic energy	B.	Kinetic energy to heat energy
C.	Heat energy to sensible heat	D.	Heat energy to latent heat
E.	Heat energy to potential energy

118.

The conditions under which three phases of matter can coexist in equilibrium, is known as

119.

The triple point temperature for water is

120.

The process of heat transfer during the re-entry of satellites and missiles, at very high speeds, into the earth's atmosphere is known as