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
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 - Steam turbines commonly used in steam power station are__________?
A. condensing type
B. non-condensing type
C. none of the above - Reheat cycle in steam power plant is used to________________?
A. utilise heat of flue gases
B. increase thermal efficiency
C. improve condenser performance
D. reduce loss of heat - The modern steam turbines are___________?
A. impulse turbines
B. reaction turbines
C. impulse-reaction turbines
D. none of the above - Steam turbines are governed by the following methods_____________?
A. Throttle governing
B. Nozzle control governing
C. By-pass governing
D. all of the above - 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 - The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is__________?
A. 0.555
B. 0.578
C. 0.5457
D. 0.6 - 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
