GTU Testing And Installation Of Electrical Equipments And Systems - June 2015 Exam Question Paper

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GTU Electrical and Electronic Engineering (Semester 8)
Testing And Installation Of Electrical Equipments And Systems
June 2015

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) State the standard method of designation of cooling of an electrical rotating machine as per IEC recommendations.

7 M

1 (b) What are the power quality disturbances in voltage? Also write its causes and remedies

7 M

2 (a) State the significance of safety precautions and explain management's responsibility.

7 M

Answer any two question from Q2 (b) or Q2 (c)

2 (b) Explain the procedure of dismantling of a large rotating machine dispatched in fully assembled condition. What are the checks after dismantling?

7 M

2 (c) What is synchronizing of a synchronous generator with busbars? What are the required conditions for instant of synchronizing?

7 M

Answer any two question from Q3 (a), (b) or Q3 (c), (d)

3 (a) Explain the working principle of megger with necessary figure and procedure of its use.

7 M

3 (b) What is load shedding? Why is it necessary? How is it carried out and where?

7 M

3 (c) Explain the procedure of acceptance and storage of induction motor.

7 M

3 (d) Explain the seven principles for safety management.

7 M

Answer any two question from Q4 (a), (b) or Q4 (c), (d)

4 (a) What is cyclic duration factor? Explain with standard notations. Explain the term MRC, STR and DTR for rotating electrical machines.

7 M

4 (b) Explain the procedure of drying out of electric motor using the
(1) radiating lamp
(2) drying chambers and resistor heaters.

7 M

4 (c) Explain the main functions of SCADA.

7 M

4 (d) Describe the test setup for impulse testing of power transformers with necessary figure.

7 M

Answer any two question from Q5 (a), (b) or Q5 (c), (d)

5 (a) State the conditions for which HVDC Links are preferred?

7 M

5 (b) Describe capacitance bridge method for locating cable faults with necessary circuit diagram.

7 M

5 (c) Explain the procedure of design of transmission towers and structures.

7 M

5 (d) Explain the procedure of investigation of power quality.

7 M

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