Ans : To generate electrical energy, is called generation.

Ans : The sources of energy can be divided into two categories –
i) Non-conventional primary sources, like geothermal energy, solar energy, solar energy, ocean tides and waves, winds etc.
ii) Conventional secondary sources, namely, fassil fuels like coal, oil and natural gas, hydraulic energy and nuclear energy.

Ans : Secondary sources.

Ans: i) Thermal power station.
ii) Hydro-electric power station.
iii) Diesel power station.
iv) Nuclear power station.
v) Gas turbine plants.
vi) Magneto hydro-dynamic power station.

Ans : The equipment which drives the electric generator or gives mechanical power to the generator, is called prime mover.

Ans: Diesel oil.

Ans : Internal combustion engines are used in the diesel engine prime mover.

Ans : 500 to 1000 r.p.m.

Ans : Diesel power stations are mainly used as (a) Standby plants, (b) Peak load plants, (c) Emergency plants, (d)Mobile plants & small supply units.

Ans: Where water supply is limited and oil is cheaper than coil.

Ans: a) It can be started and put to service quickly, b) It has no stand by loss, c) It requires no large quantity of water for cooling.

Ans: Thermal power station.

Ans: Steam turbine.

Ans : The main fuel used in the thermal power station is the coil which contains carbon, volatile matter, sulphur, ash & moisture.

Ans : i) Coal handling plant.
ii) Boiler house plant.
iii) Turbine house plant.
iv) Electrical plant.
v) Condensing plant.
vi) Water treatment plant.
vii) Ash handling system.
viii) Station auxiliary drive.

Ans : i) The site should be away from a densly populated area to keep it free from pollution and should have good transport facilities.
ii) It should be near any coal available area and where an abundant supply of cooling water is available.
iii) It should be in ample quantity of free land to make convenient disposal of ashes.

Ans : a) Merits:-
i) The station can be located close to the load center.
ii) Higher economic size of the unit may be used.
iii) Production cost is low due to cheaper fuel.
  b) Demerits:-
i) Land requirements are high.
ii) Fuel and ash handling is difficult.
iii) Maintenance is complicated.
iv) It pollutes the atmosphere.
v) Start up time is longer.

Ans : About 20% to 25%.

Ans : Inefficient method of coal burning.

Ans : Bituminous coal having the calorific value of 6000 to 8000 K.cal/kg is used in boilers.

Ans : The heat loss takes place in the dry flue gases, moisture in gas, in the process of radiation, evaporation and leakage, in unburnt fuel & ash, in the condenser, due to friction and windage.

Ans : Steam power plant.

1. Interview Question of Thermal Power Station
2. Interview Question of hydro electric power station
3. Interview Question of nuclear power station
4. Interview Question of gas turbine plant and Magneto hydro dynamic generator ( M.D.G ) plant
5. Interview Question of Power Station
6. Interview Question of Substation
7. Interview Questions on earthing of Substation
8. Interview Question of Bus Bar system of Substation
9. Interview Question of Isolator
10. Interview Question of circuit breaker and Switchgear
11. Interview Question of circuit breaker