Transmission and distribution Archives - Page 6 of 10 - MCQ and Quiz for Exams

51. Low voltage cables are meant for use up to

1.1 kV

3.3 kV

6.6 kV

11 kV

Detailed SolutionLow voltage cables are meant for use up to

52. Which of the following are the constants of the transmission lines?

Resistance

Inductance

Capacitance

All of the above

Detailed SolutionWhich of the following are the constants of the transmission lines?

53. The use of strain type insulators is made where the conductors are

Dead ended

At intermediate anchor towers

Any of the above

None of the above

Detailed SolutionThe use of strain type insulators is made where the conductors are

54. are the conductors, which connect the consumer’s terminals to the distribution

Distributors

Service mains

Feeders

None of the above

Detailed Solutionare the conductors, which connect the consumer’s terminals to the distribution

55. The following system is not generally used

1-phase 3-wire

1-phase 4-wire

3-phase 3-wire

3-phase 4-wire

Detailed SolutionThe following system is not generally used

56. Which of the following methods is used for laying of underground cables?

Direct laying

Draw-in-system

Solid system

All of the above

Detailed SolutionWhich of the following methods is used for laying of underground cables?

57. Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is

25 percent

50 percent

2-wire feeder is increased 100 percent, saving in copper is A. 25 percent B. 50 percent C. 75 percent

100 percent

Detailed SolutionTransmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is

58. Which of the following materials is used for overhead transmission lines?

Steel cored aluminium

Galvanised steel

Cadmium copper

Any of the above

Detailed SolutionWhich of the following materials is used for overhead transmission lines?

59. Constant voltage transmission entails the following disadvantage

Large conductor area is required for same power transmission

Short-circuit current of the system is increased

Either of the above

None of the above

Detailed SolutionConstant voltage transmission entails the following disadvantage

60. The power factor of industrial loads is generally

Unity

Lagging

Leading

Zero

Detailed SolutionThe power factor of industrial loads is generally

Page 1 Page 2 Page 3 Page 4 Page 5

Exit mobile version