Economics of Power Generation

61. Low power factor is usually not due to

1. arc lamps
2. induction motors
3. fluorescent tubes
4. incandescent lamp

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62. Maximum demand on a power plant is

1. the greatest of all “short time interval averaged” demand during a period
2. instantaneous maximum value of kVA supplied during a period
3. both (a) or (b)
4. none of the above

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63. offers the highest electric load.

1. Television set
2. Toaster
3. Vacuum cleaner
4. Washing machine

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64. power plant cannot have single unit of 100 MW.

1. Hydroelectric
2. Nuclear
3. Steam
4. Diesel

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65. Power plant having maximum demand more than the installed rated capacity will have utilisation factor

1. equal to unity
2. less than unity
3. more than unity
4. none of the above

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66. power plant is expected to have the longest life.

1. Steam
2. Diesel
3. Hydroelectric
4. Any of the above

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67. public sector undertaking is associated with erection and sometimes running of thermal power plants

1. NTPC
2. SAIL
3. BEL
4. BHEL

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68. Salvage value of the plant is always

1. positive
2. negative
3. zero
4. any of the above

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69. Ships are generally powered by

1. nuclear power plants
2. hydraulic turbines
3. diesel engines
4. steam accumulators

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70. Static capacitors are rated in terms of

1. kW
2. kWh
3. kVAR
4. none of the above

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