Steel core is supplied in aluminum conductors to ?
A. neutralise proximity effect
B. reduce line inductance
C. increase the tensile strength
D. compensate for skin effect
Transmission and Distribution
What should be the transmission voltage for power transmission over a 200 kilometer distance ?
A. 11 kV
B. 132 kV
C. 66 kV
D. 33 kV
The main purpose of the conductor bundles is to ?
A. reduce reactance
B. reduce radio interference
C. increase reactance
D. None of them
Which of the following techniques can be used to control transmission voltage ?
A. Switching in shunt capacitors at the receiving end during heavy loads
B. Use of tap changing transformers
C. Use of series capacitors to neutralise the effect of series reactance
D. All of them
Which voltage regulator among the following has the dead zero effect ?
A. Magnetic amplifier
B. Electronic type using integrated circuits
C. Electromagnetic type
D. None of them
Which of the following describes the connection between step-up substations ?
A. Consumer location
B. Distributors
C. Generating stations
D. Concentrated load
What is the purpose of applying a booster for ?
A. reduce voltage drop
B. compensate for voltage drop
C. increase current
D. reduce current
Is the skin effect visible at specified frequencies ?
A. high
B. low
C. audio
D. None
Which of the following parameters is most likely to change if the height of the transmission tower is increased ?
A. Inductance
B. Resistance
C. Capacitance
D. None
On which is the impact of wind pressure more determined ?
A. neutral wires
B. transmission lines
C. insulators
D. supporting towers