1 Answer

For cost and safety, the outdoor substations are installed for voltages above 33 kV.

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Description : Compare indoor and outdoor sub-station on given points : (i) Capital cost (ii) Time required for completion (iii) Availability of natural light (iv) Space required 

Answer : Sr. No.  Points Indoor substation Outdoor substation  1 Capital cost High, as construction work cost is more.  Less, as construction work cost is less 2 Time required for ... time. So it saves electrical energy & its cost 4 Space Require Less More

Description : State the different types of outdoor flood lighting and where are they used.

Answer : There are three types of projectors used for flood lighting :  a) Narrow beam Projector b) Medium angle Projector c) Wide angle Projector a) Narrow beam Projectors: - Light beam with such ... yards, stadiums, car parking area etc. 3) It is used for illuminating advertisements, boarding's etc.

Answer : An isolator is installed generally on both sides of a circuit breaker.

Answer : In a distribution system, in order to improve power factor, the synchronous capacitors are installed at the receiving end.

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