A. impulse turbines
B. reaction turbines
C. impulse-reaction turbines
D. none of the above
Related Mcqs:
- Steam turbines commonly used in steam power station are__________?
A. condensing type
B. non-condensing type
C. none of the above - 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 - 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 isentropic expansion of steam through nozzle for the steam initially superheated at inlet is approximated by equation__________?
A. pvls=C
B. pv1126 = C
C. pv1A = C
D. pv = C - The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is___________?
A. 0.6
B. 0.578
C. 0.555
D. 0.5457 - 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 - 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 - 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 - For the safety of a steam boiler the number of safety valves fitted are____________?
A. four
B. three
C. two
D. one
