Generation

MCQ – Generation

 

#1. 1kWh=…..?

incorrect

#2. One BOT unit is equal to…..?

incorrect

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

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

incorrect

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

incorrect

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

incorrect

#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….?

incorrect

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?

incorrect

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

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

incorrect

ex …cadmium.boron

#14. Water hammer occurs in…?

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

incorrect

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?

incorrect

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?

incorrect

average load= load factorxMD

=0.5x20MW

=10000kW

#41. fgg

incorrect

mainly lagging nature

#42. fgg

#43. fgg

#44. fgg

#45. fgg

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….?

incorrect

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

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

incorrect

#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….

incorrect

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

#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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