77251. For a reactance function H(s), the slope dH (jω)/dω is
77252. If the time is counted from the instant when an ac wave is at its peak value, we get a
77253. For an ac circuit having capacitance C, instantaneous current i and instantaneous voltage e are related as
77254. The relative permeability of an iron specimen is 400 when B = 0.2 T. If B = 0.4 T, μr will be
77255. When a circuit is excited by ac sinusoidal source, the admittance is obtained by letting s = jω in Y(s).
77256. The innermost part of the stem,which consists entirely of cellular tissues,is called:
77257. I = dq/dt.
77258. A resistance of 5 ohms is connected in one branch of a network. The current in this branch is 2.2. A. If the resistance is increased to 7.5 Ω, the remaining circuit being the same, the current in this branch will be
77259. A constant k high pass filter has fc = 3000 Hz. At f = 1000 Hz, the phase shift is
77260. For an RC impedance function Z
77261. In figure, the effective capacitance between A and B is
77262. If Va1, Va2, Va0 are the symmetrical components of Va, then
77263. In
77264. In drawing phasor diagram
77265. As the number SWG increases, area of cross-section decreases.
77266. In ZRC (s) has a pole at s = ∞, the last element in first Foster realization is
77267. The transient currents are due to
77268. When a lead acid cell is in fully charged condition the specific gravity of electrolyte is about 1.22.
77269. In ZRC(s) has a pole at s = 0, the first element in first Foster realization is
77270. An impedance function has term . The realizations would give
77271. If f(t) = r (t - a), F(s) =
77272. For the network in figure, which of the following expressions gives the value of net inductance between terminals A and B L1 ± L2L1 ± L2 ± ML1 ± L2 - 2ML1 ± L2 ± 2M Select the answer using the following codes
77273. The parallel RLC circuit shown in figure is in resonance. If
77274. An ideal voltage source can not be converted into an equivalent current source.
77275. Load ZL for maximum power transfer is
77276. Eddy current loss is proportional to
77277. Which is correct for a driving point function?
77278. In the circuit, the value of the voltage source E is
77279. The r.m.s. value of a half-wave rectified current is 100 A. Its value for full-wave rectification would be __________ amperes.
77280. The sum of positive real function is positive real.
77281. Assertion (A): KCL is dual of KVL.Reason (R): Node is dual of mesh.
77282. For a 2 port network, the O/P short circuit current was measured with a 1 volt source at the I/P then value of the current gives
77283. The time constant of the capacitance circuit is defined as the time during which voltage
77284. Figure shows the V-i characteristics of a material. The material is likely to be
77285. How much r.m.s. current does a 300 W, 200 V bulb take from the 200V, 50 Hz power line?
77286. In a series R-L-C circuit, the voltage across inductance will be maximum
77287. In the circuit shown in the given figure, power dissipated in the 5 Ω resistor is
77288. Assertion (A): A parallel resonant circuit is also called anti-resonant circuit.Reason (R): In a parallel resonant circuit impedance is maximum at resonance.
77289. Fourier transform and F(jω) of a signal f(t) has the property
77290. If f(t) = δ(t), F(s) =
77291. In figure, the current I is
77292. Figure shows the variation of Z(ω) for a positive real function. The function is
77293. The voltage drop per ampere-metre of an aluminium conductor is higher as compared to a copper conductor of the same size due to its higher
77294. A n-port network is said to be active if power in the ckt is __________ .
77295. When a current flows through a coil of insulated wire, the coil shows the properties of a magnet.
77296. Transformer coil is an insulator.
77297. Assertion (A): An impulse has very high magnitude but very small duration.Reason (R): A pulse function is always rectangular.
77298. The active elements on the positive and negative plates of lead acid battery are:
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