Which of the following has to be considered for overhead/underground electrical power transmission / distribution system?
a) The voltage at the consumer’s premises must be maintained within ± 4 or ± 6% of the declared voltage.
b) The transmission cost should be unduly excessive.
c) The insulation resistance of the whole system should be very high
d) The loss of power in the system itself should be a small percentage (about 10%) of the power transmitted.
1. (a), (b) and (d)
2. (a), (c) and (d)
3. (b), (c) and (d)
4. (a), (b) and (c)