This download link is referred from the post: PTU B.Tech 7th Semester Last 10 Years Previous Question Papers|| Punjab Technical University 2011-2021
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Roll No.
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Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (EE) PT
(Sem.-7)
POWER SYSTEM-II (Switch Gear & Protection)
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Subject Code : BTEE-602
M.Code: 74091
Time: 3 Hrs.
Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
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- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
SECTION-A
Write briefly:
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- What do you mean by a static relay?
- What are the duties performed by a Circuit breaker?
- What is meant by back up protection?
- Define the term “fusing factor” related to fuse.
- What are the functions of a protective relay?
- What are the uses of a Buchholz's relay?
- What do you understand by RRRV?
- Mention any two applications of differential relays.
- What do you understand by pick up value of a relay?
- What are the advantages of air blast circuit breakers over oil circuit breakers?
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SECTION-B
- Discuss various types of faults in Alternators. Explain Loss of excitation protection in Generators.
- Describe the operation of a HRC cartridge fuse.
- Classify various types of substations. Compare indoor and outdoor types of substations.
- Explain briefly following terms related to CBs with the help of some diagram :
- Arc voltage
- Restriking voltage
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- Discuss the Time graded protection of feeders.
SECTION-C
- Write a note on following :
- Negative sequence relay
- Carrier current protection of lines.
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- With the help of a neat sketch, describe the working of vacuum circuit breakers.
- Write a note on following :
- Reactance Relays
- Ground wires
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NOTE: Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Tech 7th Semester Last 10 Years Previous Question Papers|| Punjab Technical University 2011-2021