The state of vapour under saturation condition is described by_______________? A. pressure alone B. temperature alone C. pressure and temperatureD. pressure and dryness fraction E. dryness fraction alone
Heating wet steam at constant temperature is heating it at constant_________________? A. volumeB. pressure C. entropy D. enthalpy E. none of the above
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. 40% B. 25%…
At critical point, i.e. p=225.65 kg/cm2, the latent enthalpy of vaporisation is______________? A. maximum B. minimumC. zero D. depends on temperature also E. none of the above
Latent heat of dry steam at atmospneric pressure is equal to____________________? A. 539 kcal/kg B. 539 BTU/lb C. 427 kcal/kg D. 100 kcal/kg E. 471 kcal/kg
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 aboveE. none of the above
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 saturated D. dry E. none of the above
The dry saturated steam at very low pressure, (5-10 kg/cm2) when throttled to atmosphere will become________________? A. wetB. superheated C. remain dry satruated D. dry E. none of the above
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 E. none of the above
A wet vapour can be completely specified by__________________? A. pressure only B. temperature only C. dryness fraction only D. specific volume onlyE. pressure and dryness fraction