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This document is a question bank for the Electrical Engineering diploma course at J D College of Engineering & Management, Nagpur, focusing on electric substation practices. It includes various questions related to substation classification, site selection, safety rules, testing procedures, and maintenance practices. The document serves as a study guide for students preparing for their sixth semester examinations.

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sakharkar2006
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32 views1 page

QB Esp-1

This document is a question bank for the Electrical Engineering diploma course at J D College of Engineering & Management, Nagpur, focusing on electric substation practices. It includes various questions related to substation classification, site selection, safety rules, testing procedures, and maintenance practices. The document serves as a study guide for students preparing for their sixth semester examinations.

Uploaded by

sakharkar2006
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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J D College Of Engineering & Management, Nagpur

(Diploma)

Course Name : Electrical Engineering, Course Code : EE, Semester : Sixth


Subject :Electric substation practices, Subject Code : 22633 Date: - / /2025
Question Bank
1. Classify substations based on constructional features
2. Compare indoor & outdoor substation on the basis of the following points:
3. Explain any four factors to decide the selection of site for the sub-station
4. Justify the following factors governing the selection of the site of the electrical substation: (i)
Type of substation (ii) Atmospheric pollution
5. Write any four advantages of neutral grounding
6. Describe general safety rules to be followed to minimize the risk of electrical hazards in
substation
7. State the value of earth resistance as per IE rule
8. Define tower footing resistance of steel structure and write its significance in protection
9. Draw the layout of a pole mounted 11kV/400 V substation and enlist any eight equipment of
it.
10. Enlist any eight routine tests to be carried out on 11 kV/ 400 V distribution transformers
11. Write any six precautions to be taken while maintaining 11kV/400V distribution transformer
12. State the functions of three phase distribution transformer
13. Justify the use of CT & PT in 11 kV substation.
14. State any four advantages of routine maintenance of 11 kV substation
15. Describe any four important safety practices followed during breakdown maintenance in
11kV substation
16. Write the name of relevant fire-fighting equipment used in case of power transformer fire
and justify its use.
17. Describe the procedure to measure the insulation resistance of distribution transformer using
neat labelled diagram
18. Draw and explain working diagram of earth tester
19. Draw schematic (single line) diagram of a 33 kV/11 kV substation and enlist any eight
equipments of it
20. Draw neat labelled single line diagram of 33kV substation and describe the functions of
circuit breaker and isolator
21. List out accessories used in 33 kV substation and state function of each
-------------------------------------------------All the Best-----------------------------------------

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