Download GTU BE/B.Tech 2018 Winter 4th Sem New 2142404 Basic Power Systems Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER-1V (NEW) EXAMINATION - WINTER 2018

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Subject Code: 2142404 Date: 22/11/2018

Subject Name: Basic Power Systems

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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

1. What is a power generating station? (03)

2. List the advantages and disadvantages of Thermal power station. (04)

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3. Draw schematic arrangement of nuclear power plant and list out its main components (07)

1. Discuss disadvantage of low power factor. (03)

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2. What is the use of power factor? Why do we need to improve it? (04)

3. Discuss the advantages and disadvantages of (i) pin-type insulator (ii) suspension type insulators. (07)

   OR

   Explain the Nominal p method used for the solution of medium transmission line. (07)

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1. Explain proximity effect in ac supply system. (03)

2. What do you understand by skin effect? Why it is absent in DC system? (04)

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3. Derive the equation of an inductance of a conductor and loop inductance for single-phase two wire line. (07)

   OR

   What do you understand by long transmission-line? (03)

1. What is Corona effect? Which factor affecting its? (04)

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2. List the methods for solution of medium transmission lines. Explain nominal T method. (07)

1. Enlist various methods to improving string efficiency. (03)

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2. Explain types of DC links in brief. (04)

3. What is transposition? Discuss the importance of transposition in transmission line. (07)

   OR

   Explain voltage transformer earthing. (03)

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1. What are the merits of HVDC transmission? (04)

2. Enlist the basic equipment used in HVDC transmission. Explain the operation of Converters in HVDC transmission system. (07)

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1. Draw the Bus-bar arrangements in sub-station. (03)

2. Define the grounding and explain solid grounding with diagram. (04)

3. Explain the bundled conductors in EHV transmission lines with its merits. (07)

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   OR

   Explain the Ferranti effect with necessary diagram (03)

1. Enlist the five equipment along with its symbols used in Sub-stations. (04)

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2. Give the Classification of Sub-station. Explain comparison between indoor and outdoor substation. (07)