A. utilise heat of flue gases
B. increase thermal efficiency
C. improve condenser performance
D. reduce loss of heat
Related Mcqs:
- Reheat factor in steam turbines depends on______________?
A. exit pressure only
B. stage efficiency only
C. initial pressures and temperature only
D. all of the above - In steam turbines the reheat factor_____________?
A. increases with the increase in number of stages
B. decreases with the increase in number of stages
C. remains same irrespective of number of stages
D. none of the above - Rankine cycle efficiency of a good steam power plant may be in the range of____________?
A. 15 to 20 per cent
B. 35 to 45 per cent
C. 70 to 80 per cent
D. 90 to 95 per ceut - Steam turbines commonly used in steam power station are__________?
A. condensing type
B. non-condensing type
C. none of the above - Steam pressure in a steam power station, which is usually kept now-a-days is of the order of____________?
A. 20 kgf/cm2
B. 50 kgf/cm2
C. 100 kgf/cm2
D. 150 kgf/cm2 - The value of reheat factor normally varies from___________?
A. 0.5 to 0.6
B. 0.9 to 0.95
C. 1.02 to 1.06
D. 1.2 to 1.6 - Reheat factor is the ratio of_____________?
A. isentropic heat drop to useful heat drop
B. adiabatic heat drop to isentropic heat drop
C. cumulative actual enthalpy drop for the stages to total is isentropic enthalpy heat drop - The value of the reheat factor is of the order of_____________?
A. 0.8 to 1.0
B. 1.0 to 1.05
C. 1.1 to 1.5
D. above 1.5 - In a steam power plant, the function of a condenser is__________?
A. to maintain pressure below atmospheric to increase work output from the primemover
B. to receive large volumes of steam exhausted from steam prime mover
C. to condense large volumes of steam to water which may be used again in boiler
D. all of the above - The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation?
A. pv = C
B. pv1A = C
C. pv1i = C
D. pv
