A. exit pressure only
B. stage efficiency only
C. initial pressures and temperature only
D. all of the above
Related Mcqs:
- 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 - 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 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 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 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
