A. transposition of the power line
B. transposition of the communication line
C. both (A) and (B)
D. increasing the distance between the conductors
Related Mcqs:
- What will be the reflection co-efficient of the wave of load connected to transmission line if surge impedance of the line is equal to load ?
A. Zero
B. Unity
C. Infinity
D. None of the above - When a transmission line is energized, the wave that propagates on it is____________?
A. current wave only
B. voltage wave only
C. Both (A) and (B)
D. power factor wave only - A transmission line is protected by_____________?
A. inrush protection
B. distance protection
C. time graded and current graded over current protection
D. both (B) and (C)
E. none of the above - When a wave propagates on a transmission line, it suffers reflection several times at_____________?
A. tapping
B. load end
C. sending end
D. sending and other end
E. all of the above - Which of the following parameter can be neglected for a short line ?
A. Inductance
B. Capacitance
C. Resistance
D. Reactance - relay is preferred for phase fault on short transmission line?
A. Induction type
B. Reactance
C. Impedance
D. None of the above - relays are used for phase faults on long line?
A. Impedance
B. Reactance
C. Either of the above
D. None of the above - Which of the following devices will receive voltage surge first travelling on the transmission line ?
A. Lightning arresters
B. Relays
C. Step-down transformer
D. Switchgear - transmission line has reflection coefficient as one?
A. Open circuit
B. Short-circuit
E. Long
D. None of the above - For the protection of power station buildings against direct strokes the requirements are___________?
A. interception
B. interception and conduction
C. interception, conduction and dissipation
D. interception, conduction, dissipation and reflection
E. none of the above
