low operating cost
they can be started and loaded very quickly
they can be used as base load and peak load plants as well
all of the above
operating cost is low and initial cost is high
operating cost is high and initial cost is low
both operating and initial costs are high
both operating and initial costs are low
the difference of water level between the level in the storage and tail race
the height of water level in the river where the tail race is provided
the height of water level in the river where the storage is provided
the steam chest and the turbine in a thermal station
the dam and the turbine in a hydrostation
the turbine and the discharge drain
the heat exchanger and the turbine in a nuclear power plant
supply water at constant pressure
relieve water hammer pressures in the penstock pipe
produce surge in the pipeline
none of the above