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Download PTU B.Tech 2021 Jan EE 7th Sem 74091 Power System Ii Switch Gear And Protection Question Paper

Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January EE 7th Sem 74091 Power System Ii Switch Gear And Protection Previous Question Paper

This post was last modified on 26 June 2021

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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  1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
  2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
  3. 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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  1. What do you mean by a static relay?
  2. What are the duties performed by a Circuit breaker?
  3. What is meant by back up protection?
  4. Define the term “fusing factor” related to fuse.
  5. What are the functions of a protective relay?
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  7. What are the uses of a Buchholz's relay?
  8. What do you understand by RRRV?
  9. Mention any two applications of differential relays.
  10. What do you understand by pick up value of a relay?
  11. What are the advantages of air blast circuit breakers over oil circuit breakers?
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SECTION-B

  1. Discuss various types of faults in Alternators. Explain Loss of excitation protection in Generators.
  2. Describe the operation of a HRC cartridge fuse.
  3. Classify various types of substations. Compare indoor and outdoor types of substations.
  4. Explain briefly following terms related to CBs with the help of some diagram :
    1. Arc voltage
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    3. Restriking voltage
  5. Discuss the Time graded protection of feeders.

SECTION-C

  1. Write a note on following :
    1. Negative sequence relay
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    3. Carrier current protection of lines.
  2. With the help of a neat sketch, describe the working of vacuum circuit breakers.
  3. Write a note on following :
    1. Reactance Relays
    2. 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