In a throttling process_________________?

A. heat transfer takes place
B. work is done by the expanding steam
C. internal energy of steam changes
D. all of the above

The dry saturated steam at very low pressure, (5-10 kg/cm2) when throttled to atmosphere will become________________?

A. Wet
B. Superheated
C. Remain dry satruated
D. Dry

On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by_______________?

A. Horizontal straight line
B. Vertical straight line
C. Straight inclined line
D. Curved line

A wet vapour can be completely specified by__________________?

A. pressure only
B. temperature only
C. dryness fraction only
D. specific volume only

The specific heat of superheated steam in kcal/kg is generally of the order of___________________?

A. 0.1
B. 0.3
C. 0.5
D. 0.8

One kg of steam sample contains 0.8 kg dry steam; it’s dryness fraction is__________________?

A. 0.2
B. 0.8
C. 1.0
D. 0.6

Sublimation region is the region where__________________?

A. Solid and vapour phases are in equi-librium
B. Solid and liquid phases are in equilibrium
C. Liquid and vapour phases are in equilibrium
D. Solid, liquid and vapour phases are in equilibrium

Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?

A. 0°c
B. 100°c
C. Saturation temperature at given pressure
D. Room temperature

The equivalent evaporation of a boiler is a measure to compare _________________?

A. the given boiler with the model
B. the two different boilers of the same make
C. two different makes of boilers operat¬ing under the same operating conditions
D. two boilers of same make but operaing under different conditions

1 kg.m is equal to_________________?

A. 9.81 joules
B. All joules
C. 427 joules
D. 102 joules