Power Generation

Rankine efficiency of a steam power plant____________?

A. improves in summer as compared to that in winter
B. improves in winter as compared to that in summer
C. is unaffected by climatic conditions
D. none of the above

Rankine cycle operating on low pressure limit of p1 an 1 high pressure limit of p2__________?

A. has higher the renal efficiency than the carnot cycle operating between same pressure limits
B. has lower the”nal efficiency than carnot cycle operating between same pressure limit?
C. has same thermal efficiency as carnot cycle operating between same pressure limits
D. may be more or less depending upon the magnitude of p1 and p2

Rankine cycle efficiency of a good steam power plant may be in the range of____________?

A. 15 to 20 per cent
B. 35 to 45 per cent
C. 70 to 80 per cent
D. 90 to 95 per ceut

The overall efficiency of thermal power plant is equal to____________?

A. Rankine cycle efficiency
B. Carnot cycle efficiency
C. Regenerative cycle efficiency
D. Boiler efficiency x turbine efficiency x generator efficiency

The energy radiated by sun on a bright sunny day is approximately______________?

A. 700 W/m2
B. 800 W/m2
C. 1 kW/m2
D. 2 kW/m2

Solar thermal power generation can be achieved by_______________?

A. using focusing collector or heliostates
B. using flat plate collectors
C. using a solar pond
D. any of the above system

In fuel cell, the ___________ energy is converted into electrical energy?

A. mechanical
B. chemical
C. heat
D. sound

The main source of production of biogas is__________________?

A. human waste
B. wet cow dung
C. wet livestock waste
D. all above

The proper indication of incomplete combustion is_______________?

A. high CO content in flue gases at exit
B. high CO2 content in flue gases at exit
C. high temperature of flue gases
D. the smoking exhaust from chimney

The percentage 02 by volume in atmosphere air is____________?

A. 21%
B. 23%
C. 77%
D. 79%