A. wet
B. superheated
C. remain dry satruated
D. dry
E. none of the above
Related Mcqs:
- 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 - Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?
A. desirable
B. economical
C. essential
D. optional
E. uneconomical - 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 - Water at pressure of 4 kg/cm2 and 160°C temperature when exposed to atmosphere will_________________?
A. boil
B. flash i.e. get converted into steam
C. remain as it was
D. cool down
E. none of the above - A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is___________________?
A. 400 kg/cm2
B. 4000 kg/cm2
C. 40 x 105 kg/cm2
D. 40 x 106 kg/cm2
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 - It is required to produce large amount of steam at low pressure. Which boiler should be used ?
A. pulverised fuel fired boiler
B. cochran boiler
C. lancashire boiler
D. babcock and wilcox boiler
E. stoker fired boiler - 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 - Heating of dry steam above saturation temperature is known as_____________________?
A. enthalpy
B. superheating
C. supersaturation
D. latent heat
E. super tempering
