Transmission and distribution

31. The voltage of the single phase supply to residential consumers is

110 V
210 V
230 V
400 V

Detailed SolutionThe voltage of the single phase supply to residential consumers is

32. Most of the high voltage transmission lines in India are

Underground
Overhead
Either of the above
None of the above

Detailed SolutionMost of the high voltage transmission lines in India are

33. Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system?

Circulating current method
Thevenin's theorem
Superposition of currents
All of the above

Detailed SolutionBesides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system?

34. The voltage drop, for constant voltage transmission is compensated by installing

Inductors
Capacitors
Synchronous motors
All of above

Detailed SolutionThe voltage drop, for constant voltage transmission is compensated by installing

35. Large industrial consumers are supplied electrical energy at

400 V
11 kV
66 kV
400 kV

Detailed SolutionLarge industrial consumers are supplied electrical energy at

36. The spacing between phase conductors of a 220 kV line is approximately equal to

2 m
3.5 m
6 m
8.5 m

Detailed SolutionThe spacing between phase conductors of a 220 kV line is approximately equal to

37. The current drawn by the line due to corona losses is

Non-sinusoidal
Sinusoidal
Triangular
Square

Detailed SolutionThe current drawn by the line due to corona losses is

38. The skin effect of a conductor will reduce as the

Resistivity of conductor material increases
Permeability of conductor material increases
Diameter increases
Frequency increases

Detailed SolutionThe skin effect of a conductor will reduce as the

39. In AC.S.R. Conductors, the insulation between aluminium and steel conductors is

Insulin
Bitumen
Varnish
No insulation is required

Detailed SolutionIn AC.S.R. Conductors, the insulation between aluminium and steel conductors is

40. Series capacitors on transmission lines are of little use when the load VAR requirement is

Large
Small
Fluctuating
Any of the above

Detailed SolutionSeries capacitors on transmission lines are of little use when the load VAR requirement is

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