213/2014

1.

The average power delivered to an impedance (4—j3)(2 by a current Scos (1007t = 100)A

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(५) 50% (8) 4421 60 625W യു 1251

The power in a series RLC circuit will be half of that at resonance when magnitude of current
is equal to

வு च ಎ ४ AV
‏لم‎ ® 8 ^) ௯ 0

The Thevenin's equivalent of a circuit operation at w=5 rads/s, has V=371 | 159°V
and Z;=238 —j0.667 €. At this frequency, the minimal realization of the Thevenin's
impedance will have a

(வு resistor and capacitor (18) resistor, capacitor and inductor

(C) resistor and inductor (11) capacitor and inductor

If E is the electric intensity, V(V + ‏فا(‎ equal to (a) (b) :

3 © [हैं| (೧ Zero (D) Null vector

The graph of an electrical network has N nodes and B branches. The number of links L, with
respect to the choice of a tree, is given by :

(ಸ) 8-1 (0) ೫5೫ ‏مم‎ ೫-8-1 (ए) ೫-28-1

Consider a long, two-wire line composed of solid round conductors. The radius of both
conductors is .25 cm and the distance between their centres is 1 m. If this distance is doubled,
then the inductance per unit length :

(8) increases but does not double (0) halves
(C) doubles (D) decreases but does not halve

A series R - L - C circuit has R = 50 ; L = 100 pH and C = 1 pF. The lower half power
frequency of the circuit is :
(ക) 30.55 kHz (ठ) 192 kHz (C) 51.92 तवर (D) 3.05 kiz

A passive 2-port network is in a steady-state. Compared to its input, the steady state output
can never offer :

{A) higher voltage (18) lower impedance
(C) better regulation (D) greater power
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