Question

Electrical energy is transmitted over large distances at high alternating voltage. Which of the following statements is correct?

• A. For a given power level, there is a lower current.
• B. Lower current implies less power loss.
• C. It is easy to reduce the voltage at the receiving end using step-down transformers.
• D. All of these.

Answer 1

Answer: (D)

All of these.

Answer 2

: Electrical energy is transmitted over large distances at high alternating voltage As P = VI, therefore for a given power level, current (I) is lower and hence power loss $( = I^{2}R)$ becomes low. At the receiving end, high voltage can be easily reduced using step down transformers.