Power System Protection 2018 Question Paper — Government College of E…
The 2018 Power System Protection previous year question paper (Government College of Engineering and Technology, Jammu), with every question and its marks.
- University: Government College of Engineering and Technology, Jammu
- Subject: Power System Protection
- Course: Power System Protection
- Branch: Electrical Engineering
- Year: 2018
- Paper: end-term
- Duration: 180 minutes
- Total marks: 100
Instructions
- Attempt five questions in all selecting at least two questions from each Section.
- Each question carries 20 marks.
- Use of calculator is allowed.
Questions
Section-A
- QQues1. a) What is protective relay? Explain the working principle of the relay. (10) b) What are the fundamental requirements of protective relay. (10) [20 marks]
- QQues2. What is the importance of bus bar protection? Discuss different types of protection used in busbar. (20) [20 marks]
- QQues3. Explain the working principle of differential relay. Also explain different types of differential relay depending upon their principle of operation. (20) [20 marks]
- QQues4. Write short notes on the following (20) 1) Earth-Fault protection for alternator 2) Combined Leakage and overload protection for transformers 3) Earth-Fault protection for transformers [20 marks]
Section-B
- QQues5. a) What is circuit breaker? How circuit breaker used for the protection of equipments. (10) b) What is resistance switching? Why it is used in circuit breakers? (10) [20 marks]
- QQues6. Classify various types of overcurrent relays and give their applications along with their approximate characteristics. (20) [20 marks]
- QQues7. Write short notes on (20) a) Breaking capacity in circuit breaker b) Making capacity in circuit breaker c) Short time capacity in circuit breaker [20 marks]
- QQues8. Explain the construction and working principle of vacuum circuit breaker. What are the shortcomings of vacuum circuit breaker? Also explain the phenomenon of current chopping. (20) [20 marks]
Related pages
Other years
- Power System Protection 2018 question paper — end-term