Electrical Power-II EP-1 5th Semester May 2019 Diploma 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     

Duration : 3 Hrs                                                                                      M.Marks : 75

                           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

                                         SECTION-B

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 Rs 1200 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

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