MCQs of Basic Principles (Power System - II - 3150911)

Showing 111 to 120 out of 135 Questions

111.

For bulk power transmission over long distance, HVDC transmission is

(a)	Economically and technically superior to AC transmission
(b)	Not a good alternative to AC transmission
(c)	Not economically viable
(d)	None of above

112.

Corona loss in DC line is

(a)	Less than that of AC line operating at same RMS voltage
(b)	More than that AC line operating at same RMS voltage
(c)	Same as that AC line operating at same RMS voltage
(d)	Insufficient data

113.

Full load compensation in a line requires

114.

Use of additional shunt capacitor can be made for increasing the capability of line as it

115.

To increase the transmission capability of a high voltage long line

(a)	Resistance can be increased
(b)	Resistance can be decreased
(c)	Series reactors can be reduced
(d)	Shunt admittance can be reduced

116.

Power through a line can be increased by

(a)	Installing series capacitors
(b)	Installing shunt capacitors
(c)	Installing series reactor
(d)	Installing shunt reactor

117.

The power transmitted will be maximum when

(a)	Line reactance is high
(b)	Corona loss is minimum
(c)	Sending end voltage is more
(d)	Receiving and voltage is more

118.

Capacity of a transmission line can be increased by reducing

119.

For constant voltage transmission, the voltage drop along the line is maintained constant by installing

(a)	Capacitors
(b)	Inductors
(c)	Resistors
(d)	Synchronous phase modifiers at the receiving end

120.

Constant voltage transmission line has the drawback of

(a)	Increase of short circuit current of the system
(b)	Lower reserve of line in case of line trouble
(c)	Increased risk of interruption of supply due to falling of synchronous motors out of synchronism
(d)	All of above

Showing 111 to 120 out of 135 Questions