A. 0.2
B. 0.8
C. 1.0
D. 0.6
E. 0.5
Related Mcqs:
- 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%
C. 50%
D. 80%
E. 90% - If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by___________________?
A. throttling calorimeter
B. separating calorimeter
C. combined separating and throttling calorimeter
D. bucket calorimeter
E. none of the above - Vacuum for reciprocating steam engines compared to steam turbines is__________________?
A. more
B. equal
C. less
D. could be more or less depending on the size of plant
E. none of the above - Heating of dry steam above saturation temperature is known as_____________________?
A. enthalpy
B. superheating
C. supersaturation
D. latent heat
E. super tempering - 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. wet
B. superheated
C. remain dry satruated
D. dry
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 - Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?
A. desirable
B. economical
C. essential
D. optional
E. uneconomical - The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is__________________?
A. less
B. more
C. equal
D. may be less or more depending on temperature
E. unpredictable - Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio_________________?
A. 50 : 50
B. 30 : 70
C. 70 : 30
D. 40 : 60
E. 60 : 40
