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1. Which of the following transformers can have a tap changer? (a) Current transformer. (b) Potential transformer. (c) Power transformer. (d) Earthing transformer. ANSWER: (c) Power

IDMT relays are used to protect the power transformers against (a) external short circuits. (b) overloads. (c) internal short-circuits. (d) external short circuits and

Which of the following are the constants of the transmission lines? (A) Resistance (B) Inductance (C) Capacitance (D) All of

The Corona effect is considerably affected by which of the following? (A) Size of the conductor (B) Shape of the

The underground system cannot be operated above: (A) 440 V (B) 11 kV (C) 33 kV (D) 66 kV Answer:

What is a Phase Shifting Transformer? – Construction & Working Contents: A phase-shifting transformer is a special type of transformer

Types of Transmission Towers and its Design Answer: Types of transmission towers and their design are important topics for electrical

What is the use of an earthing transformer? Answer: An earthing transformer is a type of auxiliary transformer that is

Why are high voltage power lines not insulated? High voltage power lines are not insulated because the thickness of the