A. linearly
B. rapidly first and then slowly
C. slowly first and then rapidly
D. inversely
E. none of the above
Related Mcqs:
- Heating of dry steam above saturation temperature is known as_____________________?
A. enthalpy
B. superheating
C. supersaturation
D. latent heat
E. super tempering - Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?
A. desirable
B. economical
C. essential
D. optional
E. uneconomical - The specific volume of steam with increase in pressure decreases_____________________?
A. linearly
B. slowly first and then rapidly
C. rapidly first and then slowly
D. inversely
E. none of the above - The size of a boiler drum in pulverised fuel fired boiler,as its size and capacity, (steam pressure and flow ratings) increase __________________?
A. increases
B. decreases
C. remains unchanged
D. increases/decreases depending on steam temperature requirements
E. unpredictable - The steam temperature with increase in load in case of a boiler fitted with radiation super heater________________?
A. increases
B. decreases
C. remains unaffected
D. first increases and then decreases
E. unpredictable - If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton’s law, the pressure in condenser is equal to__________________?
A. Ps-Pa
B. pa-ps
C. Pa+P
D. non of these - The high pressure boiler is oiie producing steam at a pressure more than_________________?
A. atmospheric pressure
B. 5 kg/cm2
C. 10 kg/cm2
D. 40 kg/cm2
E. 75-80 kg/cm2 - 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 - 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% - 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
