Economics of Power Generation

71. Submarines for under water movement, are powered by which of the following?

1. Steam accumulators
2. Air motors
3. Diesel engines
4. Batteries

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72. The area under a load curve gives

1. average demand
2. energy consumed
3. maximum demand
4. none of the above

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73. The connected load of a IVMIM uir consumer is around

1. 5 kW
2. 40 kV
3. 80 kW
4. 120 kW

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74. The effect of electric shock on human body depends on which of the following

1. current
2. voltage
3. duration of contact
4. all of the above

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75. The efficiency of a plant is of least concern when it is selected as

1. peak load plant
2. casual run plant
3. either (a) or (b)
4. base load plant

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76. The expected useful life of an hydroelectric power station is around

1. 15 years
2. 30 years
3. 60 years
4. 100 years

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77. The increased load during summer months is due to

1. increased business activity
2. increased water supply
3. increased use of fans and air conditioners
4. none of the above

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78. The knowledge of diversity factor helps in determining

1. plant capacity
2. average load
3. peak load
4. kWh generated

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79. The least share of power is provided in India, by which of the following power plants? ‘

1. Diesel power plants
2. Thermal power plants
3. Hydro-electric power plants
4. Nuclear power plants

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80. The load factor of domestic load is usually

1. 10 to 15%
2. 30 to 40%
3. 50 to 60%
4. 60 to 70%

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