200 Important Electrical Power Generation MCQ Question and Answer | PDF Free Download
1.The commercial sources of energy are
- AFossil fuels, water and radioactive substances
- BSolar, wind, biomass
- CWood, animal wastes and agricultural wastes
- DNone of the above
2.Which of the following power plants is the least reliable?
- AWind
- BTidal
- CGeothermal
- DSolar
3.Which of the following methods of generating electric power from the sea water is more advantageous?
- AOcean currents
- BWave power
- CTidal power
- DNone of the above
4.Which of the total power installed capacity (approximate) in India?
- A125,000 MW
- B175,000 MW
- C200,000 MW
- D50,000 MW
5.The power development programmes that are possible in Tamil Nadu are largely based on
- ASteam power plants
- BHydroelectric power plants
- CNuclear power plants
- DDiesel power plants
6.A hydroelectric power station is commonly found in
- ADesert areas
- BHilly areas
- CSwamps
- DGrasslands
7.In hydroelectric power plants
- AOperating cost is low and initial cost is high
- BOperating cost is high and initial cost is low
- CBoth Operating cost as well initial cost are high
- DBoth Operating cost as well as initial cost are low
8.The advantage of hydroelectric power station over thermal power station is
- AThe initial cost of hydroelectric power station is low
- BThe operating cost of hydroelectric power station is low
- CHydroelectric power station can supply the power throughout the year
- DHydroelectric power station can be constructed at the place where the energy is required
9.A penstock is used as a conduit between
- AThe steam chest and the turbine in a thermal station
- BThe dam and the turbine in a hydro station
- CThe turbine and the discharge drain
- DThe turbine and the discharge drain
10.In high head hydroelectric power plant, the velocity of water flow in penstock is around
- A2 m/s
- B4 m/s
- C7 m/s
- D10 m/s
11.The term “Surge Tank” is associated with which type of power plant?
- AHigh head hydro Power Plant
- BLow head hydro Power Plant
- CMedium head hydro Power Plant
- DThermal Power Plant
12.Location of a surge tank, in an hydroelectric power station, is near
- ATurbine
- BTail race
- CReservoir
- DDam
13.The function of a surge tank is to
- ASupply water at constant pressure
- BRelive water hammer pressures in the penstock pipe
- CProduce surge in the pipeline
- DNone of the above
14.In hydro power plant, Water hammer occurs in
- ASurge tank
- BPenstock
- CTurbine casing
- DDraft tube
15.In a medium or high head hydroelectric power station, a surge tank is provided to
- AReduce the length of the penstock pipes
- BAugment water at the fore bay
- CControl the pressure variations in the penstock pipes due to sudden load changes
- DControl the water flow through the turbine
16.Where is the draft tube of a hydropower station that is an airtight pipe located?
- ANear the surge tank
- BIn between the penstock and the runner
- CIn between the runner exhaust and the tailrace
- DAt the beginning of penstock
17.The draft tube is provided in hydro electric power point to
- ARaise the water surface of the stream to create an artificial head
- BReduce the effect of water hammer
- CIncrease the acting head on the water wheel
- DNone of the above
18.For variable heads of near about but less than 30 meters, which type of turbines is used in hydropower stations?
- APelton
- BKaplan
- CFrancis
- DNone of the above
19.For harnessing lower variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjustable vanes is
- AKaplan
- BFrancis
- CPelton
- DImpeller
20.For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes is :
- AFrancis
- BImpeller
- CKaplan
- DPelton