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....?
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. The power factor of industrial load is generally?
incorrect
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 .....?
#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. To reduce the cost of the electricity generated....?
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. 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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