276. In figure, the short circuit current through terminal AB will be
277. The current wave of figure, is passed through a 3 H inductor during the period 0 to 2 seconds
278. The minimum number of equations required to analyze the circuit shown in the figure is
279. If Z(s) has a pole at origin, the realization leads to
280. A series resonant circuit has inductance L. If L is increased, the resonant frequency
281. In a coupled coil the primary has 100 turns and secondary has 200 turns. The primary produces, a flux Φ = e-t. The coefficient of coupling is 1. The voltages induced in secondary is
282. The Parliament of Japan?
283. What is known as Green Vitriol?
284. With Is disconnected I = - 1, when Is = b is connected, the value of I will become
285. In a resistor the current is i and the voltage is v. The rate of dissipation of heat at any time t is
286. When two port networks are connected in cascade, it is more convenient to use hybrid parameters.
287. If absolute potential of A is - 8 V and that of B is - 16 V, VAB is equal to
288. An RLC series circuit is excited by 200 V, 100 Hz supply. The current is 20 A. If R = 10 Ω, XL = 50 Ω, XC is
289. For a given voltage four heating coils will give maximum heat when connected
290. A system defined by is initially at rest, and x = u(t) sin 2t then the forced response is K sin (2t - θ). The value of θ given by
291. An R-L series circuit has R = 5 Ω and L = .01 H. It is fed by ac 50 Hz supply. The rms current in the circuit is 5 A. The active power supplied by the source is
292. A particular current is made up of two components 10A dc and sinusoidal current of peak value 14.14A. The average of resultant current is
293. In figure, the switch is closed at t = 0. After some time i = 6A and rate of change of current was 4A/s. The value of inductor is
294. Assertion (A): In series R-L-C circuit, the current may lead or lag the voltage depending on the value of R.Reason (R): Phase angle of an R-L series circuit is tan-1 (ωL/R).
295. Which one of the following statements is true about glaciers?
296. An RL impedance function can also be realized as
297. A step voltages is applied to RLC series circuit having R = 2 Ω, L = 1 H and C = 1 F. The transient current response will be
298. Class C solid insulators should not be used above 100°C.
299. Assertion (A): Superposition theorem can be used to find the output of a full wave rectifier excited by sinusoidal signal sources of different frequencies connected in series.Reason (R): Superposition theorem is valid for all linear systems.
300. The current through a 1 mH inductance is i(t) = 2.56 x 10-2 - 4 x 103 t for 2 ≤ t ≤ 20 μ sec. The voltage across the inductor is