Power Generation

Annual operating expenditure of a power plant consists of_________?

A. fixed charges
B. semi-fixed charges
C. running charges
D. all of the above

Which of the following load is responsible for lower power factor of supply system__________?

A. induction motors
B. resistive loads
C. synchronous Motors
D. all of the above

Load factor of a power station is defined as____________?

A. maximum demand/average load
B. average load x maximum demand
C. average load/maximum demand
D. none of the above

Load curve is useful in deciding the__________?

(a) A. operating schedule of generating units
B. sizes of generating units
C. total installed capacity of the plant
D. all of the above

One kilowatt hour is equal to_________?

A. 532 k cal.
B. 735 k cal.
C. 746 k cal.
D. 860 k cal.

If the load factor of a power station is high then its cost of generation will be_______?

A. High.
B. Low.
C. Remain same.
D. Depend upon plant type.

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

Compounding of steam turbine is done for_______________?

A. reducing the work done
B. increasing the rotor speed
C. reducing the rotor speed
D. balancing the turbine

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

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