Electrical energy is transmitted over large distances at high alternating voltages. Which of the following statements is (are) correct?

Options

A. For a given power level, there is a lower current
B. Lower current implies less power loss
C. transmission lines can be made thinner.
D. It is easy to reduce the voltage at the reciving end using step-down transformers.

Answer

a,b,d

Explanation

Power is given by
P = `e_(rms) I_(rms)`
since `e_(rms)` is high , `I_(rms) ` is lower for a given power level,
Also power loss = `I_(rms)^(2) ` R
So, if we make the transmission wire thinner, power loss will increase due to increase in resistance.
high voltage can be easily reduced at the receiving and using step-down transformers.