301. Insulation resistance of a cable is directly proportional to its length.
302. In the following circuit, i(t) under steady state is
303. The equivalent circuit of a resistor is shown in the given figure. The resistor will be non-inductive if
304. For a series RLC circuit bandwidth is ω2 - ω1 = R/2L.
305. In figure, the voltage V1 = 4∠0 V. The source voltage V2 is
306. A capacitor whose capacitance Ct = C0 (1- cos ωt) is fed by a sinusoidal voltage v = V0 sin ωt. The equation for current i is
307. Figure shows an RC circuit. The magnitude plot V2/V1
308. Assertion (A): In a circuit having high inductance, reactive power may be more than apparent power.Reason (R): Reactive power = VI sin θ.
309. A two branch parallel circuit has a 10 Ω resistance and 0.5 H inductance in one branch and a 100 μF capacitor in the second branch. It is fed from 100 V ac supply. At resonance, the source current is
310. In figure, A is ideal ammeter having zero resistance. It will read __________ ampere.
311. Threshold of perception occurs at a current of about 1 mA.
312. The current wave shown in figure is applied by a 0.1 F capacitor at t = 0. At t = 0+, the voltage across capacitor is
313. Who was the first Sulthan of Delhi to impose Jaziya?
314. A current increasing at the rate of 1 A/s is passed through 1 F capacitor. At t = 0, i = 0. The charge stored after 1 second is
315. An RLC series circuit has R = 30 Ω, XL = 30 Ω and XC = 30 W. Its impedance is
316. R, L and C are in parallel. The circuit is switched on to a constant current source I at t = 0. At t = ∞ the current through inductance is I.
317. A 2 mH inductor with some initial current can be represented as shown below, where s is the Laplace transform variable. The value of initial current is
318. As temperature increases, the temperature coefficient of metals increases.
319. In a 3 phase system, the zero sequence component of line to line voltages is zero
320. Magnetic effect of current is used in generators but not in motors.
321. For a nonlinear resistance
322. The Z parameters Z11 and Z21 for the 2-port network in the figure.
323. For the wave shown in figure, the average value is
324. Assertion (A): For a physically realisable driving point function, the degree of numerator and denominator should be equal.Reason (R): The sum of positive real functions is real.
325. In the figure circuit, V1 = 40 V. When R is 10 Ω. When R is zero, the value of V2 will be