Circuit Laws

A connection is made consisting of resistance A in series with a parallel combination of resistances B and C. Three resistors of value 10 Ω, 5 Ω, 2 Ω are provided. Consider all possible permutations of the given resistor...

For maximum power transfer between two cascaded sections of an electrical network, the relationship between the output impedance Z 1 of the first section to the input impedance Z 2 of the second section is

A Y-network has resistances of 10Ω each in two of its arms, while the third arm has a resistance of 11Ω in the equivalent ∆ − network, the lowest value (in Ω) among the three resistances is ______________.

A source v s (t) = V cos 100 $$\pi$$t has an internal impedance of (4 + j3) $$\Omega$$. If a purely resistive load connected to this source has to extract the maximum power out of the source, its value in $$\Omega$$ shou...

An independent voltage source in series with an impedance Z s =R s +jX s delivers a maximum average power to a load impedance Z L when

Twelve 1Ω resistances are used as edges to form a cube. The resistance between two diagonally opposite corners of the cube is

A source of angular frequency 1rad/sec has source impedance consisting of $$1\Omega$$ resistance in series with 1H inductance. The load that will obtain maximum power transfer is

The Nodal method of circuit analysis is based on

A voltage source of internal impedance $${\mathrm R}_\mathrm s\;+\;{\mathrm{jX}}_\mathrm s$$ supplies power to a load of impedance $${\mathrm R}_\mathrm L\;+\;{\mathrm{jX}}_\mathrm L$$ in which only $${\mathrm R}_\mathrm...

A network has 7 nodes and 5 independent loops. The number of branches in the network is

Superposition theorem is NOT applicable to networks containing

The number of independent loops for a network with n nodes and b branches is

Two 2H inductance coils are connected in series and are also magnetically coupled to each other the coefficient of coupling being 0.1.The total inductance of the combination can be

A generator of internal impedance, Z G , delivers maximum power to a load impedance, Z L , only if Z L = ................

Relative to a given fixed tree of a network

A load, Z L = R L + jX L is to be matched, using an ideal transformer, to a generator of internal impedance, Z S = R S + jX S . The turns ratio of the transformer required is

If an impedance Z L is connected across a voltage source V with source impedance Z S , then for maximum power transfer, the load impedance must be equal to