A. 273.15
B. 225.65
C. 100.03
D. 373.15
Related Mcqs:
- 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 - Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be_________________?
A. Wet
B. Saturated
C. Superheated
D. None of these - A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?
A. 10
B. 30
C. 50
D. 80 - Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?
A. High vacuum
B. Zero pressure
C. 0°K
D. Earth’s centre - _______________ number determines whether the fluid flow in an open channel is super-critical, critical or sub-critical ?
A. Mach
B. Reynolds
C. Froude
D. Weber - A fire tube boiler is limited to a maximum steam pressure of about ______________ kg/cm2 ?
A. 6
B. 18
C. 38
D. 52 - 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 - 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 - . 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 - What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively ?
A. 2
B. 8
C. 10
D. 40
