Economisers improve boiler efficiency by__________?

The effect of considering friction in steam nozzles for the same pressure ratio leads to_________?

A. increase in dryness fraction of exit steam
B. decrease in dryness fraction of exit steam
C. no change in the quality of exit steam
D. decrease or increase of dryness fraction of exit steam depending upon inlet quality

Regenerative cycle thermal efficiency_______________?

A. is always greater than simple Rankine thermal efficiency
B. is greater than simple Rankine cycle thermal efficiency only when steam is bled at particular pressure
C. is same as simple Rankine cycle thermal efficiency
D. is always less than simple Rankine cycle thermal efficiency

A. peak load plant
B. base load plant
C. standby plant
D. none of the above
Base Load and Peak Load power plants
Power plants are categorized as base load and peak load power plants.
Base Load Power plants:
Plants that are running continuously over extended periods of time are said to be base load power plant.
The power from these plants is used to cater the base demand of the grid. A power plant may run as a base load power plant due to various factors (long starting time requirement, fuel requirements, etc.).
Examples of base load power plants are:

 
Peak Load Power plants:
To cater the demand peaks, peak load power plants are used. They are started up whenever there is a spike in demand and stopped when the demand recedes.
Examples of Peak load power plants are:

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

Which of the following power plant has least fuel transportation______________?

A. nuclear power plants
B. diesel generating plants
C. thermal power plants
D. steam power stations

Which of the following power plant has least efficiency_________?

A. Nuclear power plant
B. Hydro power plant
C. Steam power plant
D. Diesel power plant