# For equilateral spacing of conductors of an untransposed 3-phase line, we have

1.  Balanced receiving end voltage and no communication interference

2.  Unbalanced receiving end voltage and no communication interference

3.  Balance received end voltage and communication interference

4.  Unbalanced receiving end voltage and communication interference

4

Balanced receiving end voltage and no communication interference

Explanation :
No Explanation available for this question

# For a single phase overhead line having solid copper conductors of diameter 1 cm, spaced 60 cm between centers, the inductance in mH/km is

1.  0.05 + 0.2 ln60

2.  0.2 ln60

3.  0.05 + 0.2 ln (60/0.5)

4.  0.2 ln (60/0.5)

4

0.05 + 0.2 ln (60/0.5)

Explanation :
No Explanation available for this question

# The surge impedance of a 400 km long overhead transmission line is 400Ω. For a 200 km length of the same line, the surge impedance will be

1.  200Ω

2.  800Ω

3.  400Ω

4.  100Ω

4

100Ω

Explanation :
No Explanation available for this question

# In a 400 Kv network, 360 Kv is recorded at a 400 kV bus. The reactive power absorbed y a shunt rated for 50 MV AR, 400 kv connected at the bus is

1.  61.73 MVAT

2.  55.56 MVAR

3.  45 MVAR

4.  40.5 MVAR

4

40.5 MVAR

Explanation :
No Explanation available for this question

# Series capacitive compensation in EHV transmission lines is used to

2.  Improve the stability of the system

3.  Reduce the voltage profile

4.  Improve the protection of the line

4

Improve the stability of the system

Explanation :
No Explanation available for this question

# An overhead line having a surge impedance of 400 Ω is connected in series with an underground cable having a surge impedance of 100 Ω. If a surge of 50 kV travels from the line towards the cable junctions, the value of the transmitted voltage wave at the junction is

1.  30 kV

2.  20 kV

3.  80 kV

4.  -30 kV

4

20 kV

Explanation :
No Explanation available for this question

# The load carrying capability of a long AC transmission line is

1.  Always limited by the conductor size

2.  Limited by stability considerations

3.  Reduced at low ambient temperature

4.  Decreased by the use of bundled conductors of single conductors

4

Limited by stability considerations

Explanation :
No Explanation available for this question

# Corona losses are minimized when

1.  Conductors’ size is reduced

2.  Smoothness of conductors is reduced

3.  Sharp points are provided in the line hardware

4.  Current density in conductors is reduced

4

Current density in conductors is reduced

Explanation :
No Explanation available for this question

# A single load is supplied by a single voltage source. If the current flowing from the load to the source is 10-1500 A and if the voltage at the load terminals is 100?600 V, then the

1.  Load absorbs real power and delivers reactive power

2.  Load absorbs real power and absorbs reactive power

3.  Load delivers real power and delivers reactive power

4.  Load delivers real power and absorbs reactive power

4

Load absorbs real power and absorbs reactive power

Explanation :
No Explanation available for this question

1.  98 MVAR

2.  104.02 MVAR

3.  96.04 MVAR

4.  100.04 MVAR

4