A. Wet
B. Saturated
C. Superheated
D. None of these
Related Mcqs:
- A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?
A. 10
B. 30
C. 50
D. 80 - When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively____________________?
A. Decreases & increases
B. Increases & increases
C. Increases & decreases
D. Decreases & decreases - Dry saturated steam can be converted into super heated steam by____________________?
A. Increasing its cross-sectional area of flow
B. Passing it through a pressure reducing valve
C. Forcing it downwards through a vertical tube
D. None of these - Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?
A. Decreases
B. Increases
C. Remain same
D. May increase or decrease - A fire tube boiler is limited to a maximum steam pressure of about ______________ kg/cm2 ?
A. 6
B. 18
C. 38
D. 52 - The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?
A. 273.15
B. 225.65
C. 100.03
D. 373.15 - The delivery pressure of boiler feed water pump compared to the boiler steam pressure is___________________?
A. Same
B. Slightly less
C. Slightly more
D. Much more - . The effect of friction on the flow of steam through a nozzle is to decrease the _______________ of steam?
A. Wetness
B. Mass flow rate
C. Both A & B
D. Neither A nor B - Rain drops falling through atmospheric air attain limited terminal velocity, because of ____________________?
A. Upward thrust due to air
B. Viscous force exerted by air
C. Surface tension effects of water
D. Force of gravity - With increase in steam pressure, its specific volume decreases ____________________?
A. Rapidly first and then slowly
B. Linearly
C. Slowly first and then rapidly
D. Exponentially
