Electrical Power-II EP-2 6th Semester Dec 2015 Diploma Paper. Download Previous year Electrical Power-II EP-2 6th Sem EE/EEE/5239/Diploma Solved Question Paper.
Electrical Power-II EP-2 6th Sem EEE Dec 2015 Diploma PSBTE Paper
ELECTRICAL POWER 2 EP-II 6TH SEM DIPLOMA PSBTE DEC 2015 PAPER
Duration : 3 Hrs M.Marks : 75
1. Fill in the blanks :
1.To locate the ground fault of single core cable, usually Blavier’ test is performed.
2. MCB stands for Mini or Miniature Circuit Breaker.
3.An isolator is designed to open a circuit under No load condition.
4.A fuse element should have High melting point.
5.HRC stands for High Rupturing Capacity Fuse
6.The most commonly used system for the protection of alternator is Differential protection.
7.Usually automatic protection is not provided for small distribution transformer.
8.A lightning arrestor is always connected between _ the Line and earth.
9.Ground wire is used to protect transmission line against Direct Lightning Strokes
10.The ratio of average load to the maximum load is Load Factor .
Q2. Attempt any five questions. 5×6=30
(i) Explain different types of faults in transmission line?
(ii) How is the arc extinguished in an air blast circuit breaker?
(iii) What are the advantages of SF6 circuit breaker?
(iv) Draw a neat sketch of induction type over current relay and label the various parts.
(v) What are the limitations of fuse?
(vi) Explain the working of buchholz relay?
(vii) Mention the properties of a good light arrestor?
(viii) What do mean by tariff? Explain two part tariff ?
Q3. Attempt any three questions. 3×10=30
a) Draw a neat sketch of a cross-jet explosion pot circuit breaker and explain the principle of arc extinction in it.
b) Draw a neat sketch of an MCB and explain its working.
c) Describe in detail the Merz Price system of protection for a 3 phase star-delta transformer
d) Write short notes on the following (i) Rod Gap arrestor , (ii) Earth Screen (iii)Surge Absorber
e) Explain the meaning of terms: fixed charges, running charges and tariff.State the type of tariffs commonly used for agriculture, industry and domestic consumers
Electrical Power-II EP-2 6th Sem EEE dec 2015 Diploma PSBTE Paper
Section a FILL IN THE BLANKS Electrical Power-II DEC 2015 paper
To locate the ground fault of single core cable, usually test is ______ performed.
MCB stands for Miniature or Mini Circuit Breaker .
An isolator is designed to open a circuit under load condition.
A fuse element should have ______ melting point.
HRC stands for _____
The most commonly used system for the protection of alternator is _____ protection.
Usually automatic protection is not provided for transformer.
A lightning arrestor is always connected between _ and earth.
Ground wire is used to protect transmission line against .
The ratio of average load to the maximum load is ____
Section B :Electrical Power-II EP-2 6th Sem EEE DEC 2015 Diploma Paper
Different types of faults in transmission line
How is the arc extinguished in an air blast circuit breaker
Advantages of SF6 circuit breaker
induction type over current relay and various parts.
Limitations of fuse
Working of buchholz relay
Properties of a good light arrestor
Explain two part tariff
Electrical Power-II EP-2 6th Sem EEE dec 2015 Diploma Paper
Section c Electrical Power-II EP-2 6th Sem EEE DEC 2015 Diploma Paper
What is the basic principal of circuit breaker
construction and operation of SF6 Circuit breaker
Earthing its purpose
Explain system earthing and equipment
merz-price system of protection
Purpose of inserting a resistance between horn gap arrestor and line