Download GTU BE/B.Tech 2019 Winter 4th Sem New 2140908 Electrical Power Generation Question Paper

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Subject Code: 2140908

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE - SEMESTER- IV (New) EXAMINATION — WINTER 2019
Subject Name: Electrical Power Generation
Time: 10:30 AM TO 01:00 PM

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Justify the statement, “overall efficiency of steam power station is quite low”. [03]
(b) For a steam power plant, explain functions of: (i) Air Pre Heater (ii) Cooling Tower (iii) ESP (iv) ID Fan (v) Super heater (vi) Condenser (vii) Economizer (viii) FD Fan [04]
(c) With the help of schematic diagram explain the operation of Steam power plant. [07]

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Q.2 (a) Compare conventional energy sources with non conventional energy sources [03]
(b) Classify hydro power station as per the height of head and explain in brief. [04]
(c) Draw and explain schematic arrangement of diesel power plant. Give advantages and disadvantages of diesel power plant [07]

OR

(c) Explain the schematic of nuclear power station in detail with necessary diagram [07]

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Q.3 (a) Write a short note on Nuclear Reactors [03]
(b) Define tariff. List out different types of tariff and explain any one in brief. [04]
(c) Define (i) Connected load (ii) Plant capacity factor (iii) Diversity factor (iv) Maximum load (v) Plant use factor.(vi) Base load (vii) Peak load [07]

OR

Q.3 (a) Write short note on pyranometer [03]

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(b) Explain working principle of solar photovoltaic cell [04]
(c) The monthly reading of consumer meter are as follow: [07]
Maximum demand =, 50KW
Energy consumed = 36,000KWh
Reactive energy. = 23,400KVAR

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If the tariff is Rs.80per KW of maximum demand pulse 8 paise per unit pulse 0.5 paise per unit for each 1%of power factor below 86%, calculate the monthly bill of the consumer

Q.4 (a) Describe advantages and disadvantages of gas power plant [03]
(b) A hydro plant has a reservoir having capacity of 5x10⁶ m³ which supplies water at a head of 200m.If the efficiency is 70%, find the total power generated. Assume density of water is 1000kg. [04]
(c) Write short note on Solar Photovoltaic (SPV) system. [07]

OR

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Q.4 (a) Explain advantages and disadvantages of wind energy. [03]
(b) Differentiate between Horizontal and Vertical Axis Wind Turbine [04]

Date: 13/12/2019
Total Marks: 70

Q.5 (a) What is energy? What are the different sources of energy? [03]

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(b) What is the necessary of Earthing? Explain in brief. [04]
(c) Enlist various equipments used in substation & explain function of each in brief [07]

OR

Q.5 (a) What are the function of spillways and surge tank in hydro power plant. [03]
(b) Write a short note on arc suppression coil earthing [04]

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(c) What is substation? Explain classification of substation [07]

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