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# Electrical Power-1 EP-1 5th Sem/Elect/EEE/2527/May 2019 PSBTE Paper

### Electrical Power-II EP-1 5th Semester May 2019 Diploma Paper. Download Previous year Electrical Power-II EP-1 5th Sem EE/EEE/2527/Diploma Solved Question Paper.

Electrical Power-I EP-1 5th Sem EEE May 2019 Diploma PSBTE Paper

`ELECTRICAL POWER 1 EP-I 5TH SEM DIPLOMA PSBTE MAY 2019 PAPER     `

## SECTION A

#### 1. Fill in the blanks :

1. KVAR = tan φ.
2. The 3-phase, 3-wire ac system of distribution is used for
3. ______________
4. C resistance of a conductor is more than its D.C resistance due to___________ effect.
5. In the cables stranded conductors are used to improve of the ____________
6. For combined power and lightning load system is _____________
7. Block rate tariff is usually applicable to
8. Murray loop test is used to locate _____________
9. Corona loss can be minimized if the size of the conductor is power _______________
10. At the various load centres usually the voltage level is
11. Power factor of resistance load is always
###### Q2. Attempt any five questions.                                                 5×6=30
1. State the advantages and disadvantages of high voltage C. transmission over A.C. transmission.
2. Differentiate between feeder, distributor and service
• Name various types of tariffs and discuss the characteristics of good
1. Define string efficiency and how it can be
2. What do you understand by sub-station? What are its functions which can be performed at substation?
3. What are the faults which are more likely to occur in underground cables?
• Derive an expression for sag for an overhead line conductor on level supports.

A 16 Km long transmission line consists of pair of conductors 1.5cm in diameter spaced 2m apart. Find the loop inductance of the line

## SECTION-C

#### Q3. Attempt any three questions.                                         3×10=30

Q3. a) What is voltage regulation? Discuss the condition for zero voltage regulation.

1. b) Explain unsymmetrical fault on 3-phase

Q4. a) A consumer takes a steady load of 300kW at a p.f. 0.8 lagging for 15 hrs/day and 300 days/annum.Estimate his annual payment if charge at 40 paise per kWh plus Rs1200 per KVA per annum.

1. b) What are the main considerations while designing a distributor? Explain corona factor influencing it and the method reducing corona.
2. Q6. a) Explain 3-phase 4 wire systems of distributions of electrical power.
3. b) Explain the consequences of disconnection of neutral in a 3phase -4 wire

## Electrical Power-I EP-1 5th Sem EEE May 2019 Diploma PSBTE Paper

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### Section a FILL IN THE BLANKS Electrical Power-II MAY 2016 paper

Electrical Power Station Located in Ropar is _________Power Station.

Electrical Power Station Located in Ropar is Guru Gobind Singh Super Thermal Power Station.

The Diversity Factor is Always _______ Than One.

The Diversity Factor is Always Greater Than One.

Percentage Reactance is defined as  ____________

Percentage Reactance is defined as

The Difference Between a Switch and Circuit Breaker is _______

The Difference Between a Switch and Circuit Breaker is

Fusing current is ________ than Current Carrying capacity of a Fuse.

Fusing current is Always Less than Current Carrying capacity of a Fuse.

ELCB Stands for __________

ELCB Stands for Earth Leakage Circuit Breaker

The Maximum Value of Voltage Being used in India for Transmission of Electric Power is ______.

The Maximum Value of Voltage Being used in India for Transmission of Electric Power is 750KV AC.

The Breaking Capacity of a Circuit Breaker is defined as _________

The Breaking Capacity of a Circuit Breaker is defined as Maximum Short Circuit Current That Breaker can Interrput Without Damage.

The Power Stations used as Base Load Stations are ________.

The Power Stations used as Base Load Stations are Coal Fuel or Nuclear Power Stations

The value of resistance of pn junction, when it is forward biased is ____

Low

FET is a _____ terminal semiconductor

Three

### Section B :Electrical Power-II EP-2 6th Sem EEE MAY 2016 Diploma Paper

Discuss common types of faults in overhead and underground lines.

Common types of faults in overhead and underground lines.

What is the function of isolator and circuit breaker?

Function of isolator and circuit breaker

Write a short note on rating of circuit breaker.

Short note on rating of circuit breaker.

What is relay ? What function does it perform? Define the pickup current of a relay.

Relay and its Function

Define the pickup current of a relay.

What is a solar power generation and what are its advantages?

Explain the difference between earth and neutral wire.

Difference between earth and neutral wire

Name the type of lightning arrestors. Explain with neat sketch Horn gap arrestor.

Name the type of lightning arrestors.

Horn gap arrestor.

Write a short note on Block rate tariff.

Block rate tariff

## Electrical Power-II EP-2 6th Sem EEE May 2016 Diploma Paper

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### Section c Electrical Power-II EP-2 6th Sem EEE May 2016 Diploma Paper

Draw a neat sketch of a cross-jet explosion pot circuit breaker and explain the principle of arc extinction in it.

cross-jet explosion pot circuit breaker

explain the principle of arc extinction in it.

Draw a neat sketch of an MCB and explain its working.

MCB and explain its working.

Describe in detail the Merz Price system of protection for a 3 phase star-delta transformer

Merz Price system of protection for a 3 phase star-delta transformer

(i) Rod Gap arrestor

(ii) Earth Screen

(ii) Earth Screen

(iii) Surge Absorber

(iii) Surge Absorber

Explain the meaning of terms: fixed charges, running charges and tariff.

fixed charges

running charges

tariff.