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OEE-001
Certificate of Competency in Power Distribution (CCPD) Li) 0.1
Term-End Examination
O O
June, 2012
OEE-001 : ELECTRICITY AND SAFETY MEASURES Time : 3 hours Maximum Marks : 70 Note : Section-A is compulsory. Attempt any ten questions from Section-B and attempt any ten questions from Section-C. Answer only in English or Hindi. (only one medium) SECTION-A 1.
Fill in the blanks. Select the answer from the choices as under. 10x1=10 Capacitance, 3600, fast, solar system, discharge, power factor, neutral , voltage surge, separate, ohmmeter, 36,00,000, slow, connect, resistance meter, Inductance. (a)
Instrument to measure resistance is called
(b) 1 kWh = (c)
joules. The capacity to store charge is called
(d)
Ratio of Real Power to Total Power is called
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P.T.O.
The earthing of the star point of an equipment is to discharge The objective of system protection is to faulted equipment from power system. In a relay when the current exceeds the instantaneous setting, the time of trip becomes to earth thoroughly all cables before working on the cores. To lackee any disaster, one of the facility required is The common point of a star connected polyphase system is called
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SECTION-B Attempt any ten questions.
2x10=20
2.
Which component of power is useful active or reactive and why ?
3.
What are the three quality parameters of electric supply ?
4.
Why high voltage is preferred in transmission lines ?
5.
Write any four tools used by an electrician.
6.
What could be the reason for electrical shock ?
7.
What is the fundamental purpose of grounding in an electrical system ?
8.
What is a circuit breaker ?
9.
What are the safety precautions to be adopted for any household electrical appliances ?
10 Describe any two methods of connecting neutral of the electrical equipment to ground. 11. What is a Meggar ? 12.
What is the speciality of minimum Time Delay Relay ?
13.
What is the role of Buchholz Relay ?
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P.T.O.
SECTION-C Attempt any ten questions. 14.
10x4=40
Explain in detail, the earthing requirements of Electrical Equipments.
15.
Describe briefly different methods of Earth Resistance Measurements.
16.
What is the need of Protection System ?
17.
Describe different types of protection used for transmission lines ?
18.
What is an Instrumentation Transformer ?
19.
What are the factors likely to cause Electrical hazard ?
20.
What are the basic principles of Fire Extinguishing ?
21.
What are the precautions and safety rules to prevent Fire Accidents ?
22.
What are the precautions any electrician should take while handling tools ?
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23.
24.
Explain how will you use : (a)
Reamer
(b)
Snip - Straight
(c)
Rawal plug tool
What is the reason for the statement "Right tool for right use " ?
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P.T.O.
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