The capacity of large turbo-generators varies from___________?

In a boiler installation the natural draught is produced_____________?

A. due to the fact that furnace gases being light go through the chimney giving place to cold air from outside to rush in
B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column
C. due to the fact that at the chimney top the pressure is more than its environmental pressure
D. all 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

Which of the following is usually not the generating voltage__________?

A. 6.6 kV
B. 9.9 kV
C. 11kV
D. 13.2kV

The cooling section in the surface condenser__________?

A. increases the quantity of vapour extracted along with air
B. reduces the quantity of vapour extracted along with air
C. does not affect vapour quantity extracted but reduces pump capacity of air extraction pump
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

In Rankine cycle the work output from the turbine is given by__________?

A. change of internal energy between inlet and outlet
B. change of enthaply between inlet and outlet
C. change of entropy between inlet and outlet
D. change of temperature between inlet and outlet