Frequency of alternating current in India is .
(a) What do you understand by the terms 'direct current' and 'alternating current' ?
(b) Name some sources of direct current and some of alternating current.
(c) Stated an important advantage of alternating current over direct current.
(d) What is the frequency of A.C. supply in India ?
The frequency of alternating current (a.c.) supply in India is :
(a) 0 Hz (b) 50 Hz (c) 60 Hz (d) 100 Hz