Download PTU B.Tech 2020 March EE 7th and 8th Sem Power System II Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech EE (Electrical Engineering) 2020 March 7th and 8th Sem Power System II Previous Question Paper

1 | M - 74091 (S2)-215
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(EE) PT (Sem.?7)
POWER SYSTEM-II (SWITCHGEAR & PROTECTION)
Subject Code : BTEE-602
M.Code : 74091
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
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
1. Write briefly :
a) Differentiate between Busbar and Feeder.
b) What is HRC fuse? Draw its cut off characteristics.
c) Define term Recovery voltage in relays.
d) Mention prominent features of Vacuum circuit breaker.
e) What are Thermal relays? Give its applications.
f) Mention functional characteristics of protective relays.
g) Give merits of Grounded neutral system.
h) List the protection schemes of transformer.
i) Name parameters to define rating of a circuit breaker.
j) What is meant by Carrier current protection of lines?

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1 | M - 74091 (S2)-215
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(EE) PT (Sem.?7)
POWER SYSTEM-II (SWITCHGEAR & PROTECTION)
Subject Code : BTEE-602
M.Code : 74091
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
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
1. Write briefly :
a) Differentiate between Busbar and Feeder.
b) What is HRC fuse? Draw its cut off characteristics.
c) Define term Recovery voltage in relays.
d) Mention prominent features of Vacuum circuit breaker.
e) What are Thermal relays? Give its applications.
f) Mention functional characteristics of protective relays.
g) Give merits of Grounded neutral system.
h) List the protection schemes of transformer.
i) Name parameters to define rating of a circuit breaker.
j) What is meant by Carrier current protection of lines?

2 | M - 74091 (S2)-215
SECTION-B
2. Discuss layout of a distribution substation.
3. Describe briefly theories of Arc interruption in circuit breakers.
4. Explain construction and working principle of Translay relay.
5. With the help of diagram, discuss Restricted earth fault protection of an alternator.
6. Discuss distance protection of Feeders.

SECTION-C
7. a) Discuss working principle of SF
6
circuit breaker.
b) Describe functioning of Impulse gap type arrestor.
8. Discuss various relaying schemes used for protection of transformers.
9. Write short notes on the following :
a) Neutral grounding
b) Loss of excitation protection of alternator






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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