1. The power station is characterized by long life a) wind turbine b) gas turbin
ID: 2291327 • Letter: 1
Question
1. The power station is characterized by long life a) wind turbine b) gas turbine c) hydroelectric d Solar 2. The power generation is typically done at voltage between a) 2.4 kV 6 kV b) 11 kV 30 kV c) 46 kV - 69 kV d) 115 kV - 230 kV 3. Gas turbine power plants operate based on a) Rankine cycle b) Brayton cycle c) Ericsson cycle d) All of the above 4. Nuclear and power plants are steam-based. a) gas turbine b) concentrating solar c) variable-speed wind d) Hydroelectric 5. A parabolic trough a) includes a parabolic dish-shaped mirror b) converts kinetic energy from the wind to mechanical energy c) consists of many long parallel rows of curved mirrors d) consists of thousands of flat mirrors called heliostats 6. Three-phase svstems feature a) less vibration for electric machines b) higher power transfer c) smooth start of electric machines d) all of the above 7. Power factor correction can a) reduce the system losses b) decrease the load voltage c) decrease the power transfer capability d) none of the aboveExplanation / Answer
1) Hydro electric power plant has long life as compared to remaining power plant because its source is water(option C is correct)
2) Option B is correct: The generation is in between 11KV - 30kv. .. 11kv is the best voltage for alternators and econoical
3)Option B is correct.. it is a thermo dynamic cycle working a constant pressure heat engine
4)Gas turbine(option a is correct) : In this burning natural gas or synthesis gas from coal, whose hot exhaust powers a steam power plant used to generate the power
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