The ratio of active power to apparent power is known as __________ factor.

If a driving point function N(s) = p(s)/q(s), then

Assertion (A): In a parallel circuit having two branches, each branch current may be more than source current.

Reason (R): Calculations in ac circuits use rules of complex algebra.

The minimum permissible size of aluminium cable for lighting circuit is

Current density J, conductivity `sigma` and electric field E in a conductor are related as

Consider the following statement : If a network has an impedance of (1 - j) as a specific frequency, the circuit would consist of series

1. R and C
2. R and L
3. R, L and C

The dual of quantity charge is

For a transfer function H(s) = P(s)/Q(s), where P(s) and Q(s) are polynomials in s

The inductance of a coil can be increased by

When analysing two port networks in cascade, it is more convenient to use