A. horizontal straight line
B. vertical straight line
C. straight inclined line
D. curved line
E. none of the above
0
The dry saturated steam at very low pressure, (5-10 kg/cm2) when throttled to atmosphere will become________________?
0
The dry saturated steam at very high pressure (150-200 kg/cm2) when throttled to atmosphere will become_______________?
A. wet
B. superheated
C. remain dry satruated
D. dry
E. none of the above
0
In a throttling process_________________?
A. wet
B. superheated
C. remain dry saturated
D. dry
E. none of the above
0
Latent heat of dry steam at atmospneric pressure is equal to____________________?
A. heat transfer takes place
B. work is done by the expanding steam
C. internal energy of steam changes
D. all of the above
E. none of the above
0
At critical point, i.e. p=225.65 kg/cm2, the latent enthalpy of vaporisation is______________?
A. 539 kcal/kg
B. 539 BTU/lb
C. 427 kcal/kg
D. 100 kcal/kg
E. 471 kcal/kg
0
In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is__________________?
A. maximum
B. minimum
C. zero
D. depends on temperature also
E. none of the above
0
Heating wet steam at constant temperature is heating it at constant_________________?
A. 40%
B. 25%
C. 50%
D. 80%
E. 90%
0
The state of vapour under saturation condition is described by_______________?
A. volume
B. pressure
C. entropy
D. enthalpy
E. none of the above
0
Water boils when its vapour pressure ___________________?
A. pressure alone
B. temperature alone
C. pressure and temperature
D. pressure and dryness fraction
E. dryness fraction alone
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