Generation

MCQ – Generation

#1. 1kWh=.....?

incorrect

#2. One BOT unit is equal to.....?

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#3. For high head hydro electric plant, the turbine used is....?

#4. For low head hydro electric plant, the turbine used is....?

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#5. Surge tank is provided for the protection of....?

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#6. The cheapest plant in operation and maintanance is in which plant?

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#7. Economisers are in thermal plant used for heat.....?

#8. India's first nuclear power plant was built at....?

#9. The thermal efficiency of a steam power station is about....?

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overall efficiency  less than thermal efficiency

#10. Nuclear energy converted into electrical energy in nuclear substation by process of....?

#11. Diesel power plant are used as....plants?

#12. Which of the following material is used as a moderator in nuclear power plant?

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moderator does not absorb neutrons but it reduce speed. ex heavy water and beryllium , graphite

#13. Nuclear reactor, control rods are used for.....?

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ex …cadmium.boron

#14. Water hammer occurs in...?

#15. Control rods are used in nuclear reactor made by....?

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boron

#16. Minimum operating cost in which power plant?

#17. Which of following plant has maximum capital cost....?

#18. The area under the daily load curve gives....?

#19. The cure showing the variation of load on the power station under with time is known as....?

#20. Total sum of the continous ratings of all the equipments connected to supply system called?

#21. Greatest demand of load on the power station during a given period called....?

#22. Installed capacity of a generating station determined by use of....?

#23. Which of the following rotor used in thermal power plant?

#24. The tariff most suitable for large industrial consumers is...?

#25. The capacity factor of a plant is given by....?

#26. In a power supply system demand factor is....?

#27. In a system, if the base load is the same as the maximum demand, the load factor will be....?

incorrect

load factor= average load / maximum demand

#28. The knowledge of diversity factor helps in computing...?

#29. The connected load is generally ..... than the maximum demand?

#30. Load factor is the ratio of....?

#31. The value of demand factor is ...... ?

#32. The higher the load factor of a power station, cost per unit generated is....?

#33. Maximum demand on the power station is 80 MW and connected load is 100MW calculate the demand factor?

incorrect

max demand / connected load =80/100=0.8

#34. The value of load factor is always....?

average load is smaller than max demand

#35. Area under daily load curve divided by 24 gives....?

#36. The maximum demand on a power station is 100MW. if the annual load factor is 40%. Calculate the total energy generated in a year?

incorrect

energy generated/year= 

max. demandxLFxhours in year

#37. The ratio of sum of individual maximum demands to the maximum demand on power station called....?

#38. A generating station has a connected load of 43 MW and a maximum demand of 20MW. calculate the demand factor?

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demand factor= max demand / connected load

#39. Diversity factor is always.....?

#40. In a steam power station having a maximum demand of 20MW and annual load factor is 50%. calculate the average load?

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average load= load factorxMD

=0.5x20MW

=10000kW

#41. The power factor of industrial load is generally?

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mainly lagging nature

#42. A load power factor of 0.95 lagging implies reactive power demand of...?

#43. The running cost of power station depends on ....?

#44. Which of the following equipments has the lowest powerfactor?

#45. The connected load of a consumer is 2kW and maximum demand is 1.5kW. the demand factor of consumer is...?

incorrect

= max demand/ connected load

= 1.5/2=0.75

#46. The value of diversity factor is .....?

#47. Greater the diversity factor leads ......is the cost of generation of power?

#48. A generating station is to supply three regions 10MW,6MW,5MW. The diversity factor is 1.4. calculate the maximum demand?

incorrect

max. demand=sum of individual max demand/diversity factor

=21/1.4=15MW

#49. Base load occurs on.....hours in a power station?

#50. The running cost of a generating station directly depends on....?

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#51. A generating unit operates maximum efficiency at ......% of its rated capacity?

#52. To reduce the cost of the electricity generated....?

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#53. The rate at which electrical energy is supplied to a cosumer is called....?

#54. In a power plant if the maximum demand on the power plant is equal to the plant capacity, then

#55. The number of units generated will be more if the load factor is.....?

#56. Diversity factor has direct effect on the.....

#57. A consumer has annual consumption is 800400 units.its maximum demand is 200kW. the load factor is....

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load factor=energy consumed/max demandxtime

=800400/(200x365x24)

=0.45=45%

#58. Diversity factor helps to determining.....?

#59. The maximum demand of a consumer is 2kW and his daily energy consumption is 24 units.his load factor is....%

incorrect

load factor= energy consumed/max demandxtime

=24/2×24=0.5=50%

#60. Semi fixed cost directly depends on .....of the power station?

#61. A diesel power plant generally used as a.....load station?

#62. More efficient plants are used as .......?

#63. Installed capacity of a power station greater than the.....?

#64. Which of the following is not a method of determining the annual depreciation charge?

#65. Average load is.....,if the load factor increase?

#66. Block rate tariff is mostly applicable to....consumers?

#67. A big consumer is charged at a lower rate than a small consumer because of.....?

#68. The ideal tariff for any type of consumer is....tariff?

#69. Power factor of an AC circuit given by....?

#70. Power factor can be improved by adding capacitor parallel with the load, it takes....?

#71. An over excited synchronous motor on no load is known as....?

#72. The maximum value of power factor can be...?

#73. KVAR =.....tan$?

#74. The most economical power factor for a consumer is generally.....?

#75. A consumer has a maximum demand of 200kW at 40% load factor.calculate unit consumed per year?

= max demand x lf x hours

=200×0.4×8760

=700800kWh

#76. Diversity factor x maximum demand is...?

#77. Large size steam plants and nuclear plants are suitable for....?

#78. Most of generators in thermal power plant runs at....?

#79. Which of the following is correct?

#80. If the power factor is high, then the consumer maximum KVA demand?

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