Steam turbines commonly used in steam power station are__________?

Related Mcqs:

1. 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...

2. The modern steam turbines are___________?

   A. impulse turbines B. reaction turbines C. impulse-reaction turbines D. none of the above...

3. 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...

4. 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...

5. Steam turbines are governed by the following methods_____________?

   A. Throttle governing B. Nozzle control governing C. By-pass governing D. all of the above...

6. A steam power station requires space______________?

   A. equal to diesel power station B. more than diesel power station C. less than diesel power station...

7. The overall efficiency of a steam power station is ________ its thermal efficiency.

   A. less than B. equal to C. greater than D. none of the above...

8. At low value of power factor, the cost of generation of a power station will be____________?

   A. high B. low C. remain same D. none of the above...

9. 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...

10. 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...