63451. In a practical current source, the load current

63452. The Scientist who discovered the relation between electricity and magnetic effects?

63453. The pole zero diagram of an impedance Z has a pole at s = - 6 and zero at s = - 4 as shown in figure the constant multiplier k = 1. For a signal Is = cos 6t, the steady state voltage across Z is given in magnitude as under

63454. A resistor R of 1 Ω and two inductor L1 and L2 of inductances 1 H and 2 H respectively, are connected in parallel. At some time, the current through L1 and L2 are 1 A and 2 A, respectively. The current through R at time t = ∞ will be

63455. The most important tool in obtaining influence lines is:

63456. In an R-L circuit excited by a battery of voltage E, the current and voltage across resistor are 1- e-t and 2(1 - e-t) respectively. If there were an initial current of 2 A in the inductance, the voltage across resistance would have been

63457. Stray capacitance is important at low frequencies.

63458. A non-linear element has zero resistance.

63459. In a RL circuit, the angle, θ by which the current lags the voltage is

63460. v-i relation for a capacitor is

63461. The time constant of the circuit in figure is

63462. The damping coefficient for the given circuit is __________

63463. A 60 W, 23 V bulb is used for 45 minutes. The electrical energy consumed in commercial units is

63464. In an ideal current source, the source resistance is zero.

63465. A choke coil has a resistance to reactance ratio of 0.2. The power factor of the choke coil is

63466. A doctor advised a patient to wear spectacles with cylindrical lens. This is to rectify his..........?

63467. If Va0, Va1, Va2 are sequence components of Va and Ia0, Ia1, Ia2 are sequence components of Ia, then total 3 phase power P is given by

63468. Two capacitors of 1 μF and 2 μF are connected in series across a 10 V dc battery. After the capacitors have been charged, the charges across the two capacitors will be

63469. A series RLC circuit has Q = 5. A voltage of 10 V rms is applied to it. At resonance, the voltage across C is

63470. The pole of a reactive function

63471. In the circuit of figure the current through 3 Ω resistance at t = 0+ is

63472. Wave A starts its positive half cycle at ωt = 30° and wave B starts its positive half cycle at ωt = 75° then wave B is leading wave A by 45°.

63473. Assertion (A): For networks in figure (1) and (2) sum of products of branch voltages and branch currents at any time is zero.Reason (R): The networks in figure (1) and (2) are not the same structurally.

63474. In the circuit of figure the switch is open for a long time, At t = 0 the switch is closed. At t = 0+ the current supplied by battery is

63475. Assertion (A): The Laplace transform of a ramp is 1/s2.Reason (R): The integral of a unit step function gives an impulse function.

63476. An RL series circuit is initially relaxed. A step voltage E is applied. If t is time constant, voltage across R and L will be equal at t =

63477. For the two port of figure, z11 is

63478. A certain network has two ideal voltages sources and a large number of ideal resistances. The power consumed in one of the resistances is 4 W when either of two sources is active and the other source is active and the other source is short circuited. When both sources is short circuited.When both sources are active, the power consumed in the same resistor would be

63479. A coil of resistance R and inductance L is connected in series with 5 μF capacitor. The source frequency is equal to resonance frequency and circuit current is 0.5 A. Another 5 F capacitor is connected in parallel with the above capacitor. The circuit current will be

63480. A capacitor having capacitance C is raised to voltage V. The energy stored will be

63481. If the p and T circuits in figure are equivalent, then R1, R2, R3 respectively are

63482. In an R-L circuit, the impedance is 30 Ω at a frequency of 100 Hz. At 200 Hz, the impedance should be

63483. In the circuit, Vs = 10 cos ωt, power drawn by the 4Ω resistor is 8 watt. The power factor is

63484. The electric energy required to raise the temperature of a given amount of water is 1000 kWh. If heat losses are 25%, the total heating energy required is __________ kWh.

63485. The circuit in figure, is to be scaled to an impedance level of 5kΩ and resonant frequency of 5 x 106 rad/sec. The possible combination of R, L, C is

63486. In figure, the total power consumed is

63487. If operator 'a' = 1 ∠120° then (1 + a) =

63488. A current wave is i = 100e-60t The initial and final values of current are

63489. Assertion (A): The impedance of a series resonant circuit is minimum at resonance.Reason (R): Resonance condition implies unity power factor condition.

63490. In the circuit of figure the switch is closed at t = 0, At t = 0+ this current through inductance is

63491. In the circuit of figure, the source supplies, 2.25 mA. The value of R must be

63492. The sum of positive real functions

63493. Twelve 1 Ω resistance are used as edges to form a cube. The resistance between two diagonally opposite corners of the cube is

63494. A parallel RLC circuit has ω0 = 106 and Q = 30, Given C = 30 pF, the value of R is

63495. An m derived low pass filter has fc = 1000 Hz and m = 0.6. This filter will have infinite attenuation at

63496. In figure, i(t) is a unit step current. The steady state value of v(t) is

63497. A current 10 sin (200t) A flows through a 5 mH inductance. The expression for voltage is

63498. In figure, capacitor is used to develop pulses of short duration and large duty cycle across R2 when switch is closed. Which of the following combinations is best suited?

63499. In figure, which value of ZL will cause maximum power to be transferred to the load?