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
E. 1.0
Nozzles and Turbines
One kg of steam sample contains 0.8 kg dry steam; it’s dryness fraction is__________________?
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
E. 0.5
Sublimation region is the region where__________________?
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
E. none of the above
The equivalent evaporation of a boiler is a measure to compare _________________?
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
E. any type of boilers operating under any conditions
Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?
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
E. 20°C
1 kg.m is equal to_________________?
1 kg.m is equal to_________________?
A. 9.81 Joules
B. All Joules
C. 427 Joules
D. 102 Joules
E. 539 Joules
Coke is produced by__________________?
Coke is produced by__________________?
A. pulverising coal in inert atmosphere
B. heating wood in a limited supply of air at temperatures below 300GC
C. strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
D. binding the pulverised coal into brick-etts
E. enriching carbon in the coal
The critical pressure at which latent heat of vaporisation is zero is________________?
The critical pressure at which latent heat of vaporisation is zero is________________?
A. 225.65 kgf/cm2
B. 273 kgf/cm2
C. 100 kgf/cm2
D. 1 kgf/cm2
E. – 1 kgf/cm2
For water, at pressures below atmospheric___________________?
For water, at pressures below atmospheric___________________?
A. melting point rises slightly and boiling point drops markedly
B. melting point rises markedly and boiling point drops markedly
C. melting point drops slightly and boiling point drops markedly
D. melting point drops slightly and boiling point drops slightly
E. none of the above
The saturation temperature of steam with increase in pressure increases____________________?
The saturation temperature of steam with increase in pressure increases____________________?
A. linearly
B. rapidly first and then slowly
C. slowly first and then rapidly
D. inversely
E. none of the above