63201. Current having waveform in figure flows through 10 Ω resistance. Average power is
63202. S is closed for a long time and steady state is reached. S is opened at t(0-). The voltage marked V is V0 at t = 0+ and Vf at t = ∞. Then value of V0 and Vf are respectively
63203. Two voltages are v1= 100 sin (ωt + 15°) and v2 = 60 cosωt, then
63204. If A = 16 ∠64°, (A)0.5 is
63205. The switch in figure is initially closed. At t = 0 the switch is opened. At t = 0+, the current through inductance is
63206. A constant k low pass T section filter has a characteristic impedance of 600 p at zero frequency. At f = fc the characteristic impedance is
63207. The resonant frequency of the circuit shown in figure is
63208. For the circuit shown in the figure, the time constant RC = 1 ms. The input voltage is V1(t) = 2 sin 103 t. The output voltage V0(t) is equal to
63209. Bus bars are always meant for very heavy currents.
63210. A low-pass filter frequency responce H (jω) = A (ω) ejΦ(ω) does not produce any phase distortion, if
63211. In a tungsten filament lamp
63212. An RLC series circuit has R = 8 Ω, XL = 8 Ω and XC = 8 Ω Its impedance is
63213. Two similar mutually coupled coils have a total inductance of 900 mH and coefficient of coupling 0.5. The self inductance of each coils is
63214. The biggest hydroelectric project in Kerala is .......?
63215. The function of a choke in a fluorescent lamp is
63216. A series resonant circuit is fed by a voltage having rms value V. At resonance, the voltage across inductance VL and voltage across capacitance VC are related as
63217. Calculate i(t) for t ≥ 0, assuming the switch has been in position A for a long time at t = 0, the switch is moved to position B.
63218. In figure, capacitor is uncharged. The switch is closed at t = 0 at t = 0+ di/dt is
63219. In a series RLC circuit, R = 2 kΩ, L = 1H and The resonant frequency is
63220. The function Z(s) has a pole at infinity if
63221. An input voltage V(t) = 10 2 cos (t + 10°) + 10 3 cos (2t + 10°)V is applied to a series combination of resistance R = 1 kΩ inductance L = 1H. The resulting steady-state current i(t) in ampere is
63222. A thermal power plant has an efficiency of 0.4. If 0.6 kg of coal is burnt to generate 1 kWh, the calorific value of coal is
63223. An RC series circuit has R = 20 Ω and XC = 20 Ω. Then Z =
63224. An inductance having XL = 5 Ω and a capacitance having XC = 5 Ω are connected in parallel across 100 V, 50 Hz supply. The current drawn from source is
63225. In figure the total inductance of the circuit is
63226. In the network of figure, the voltage drops across R1, R2, R3 are 6 V, 8 V and 12 V with polarities as shown. The value of R3 is
63227. Assertion (A): Millman's theorem helps in replacing a number of current sources in parallel by a single current source.Reason (R): Maximum power transfer theorem is applicable only for dc, circuits.
63228. Double integration of unit step function leads to
63229. A conductor has a cylindrical shape with a diameter d. Its resistance is 2 Ω. It is recast into a cylindrical conductor of diameter 0.3d. The resistance of new conductor is likely to be
63230. One commercial unit of energy is equal to
63231. In figure which is correct at any time t
63232. Two coupled coils with self inductances of 4 mH and 16 mH are connected in series. The maximum possible value of inductance can be
63233. In using KCL it is necessary that current leaving a node is written as negative.
63234. A resistor is rated at 0.75 watt, 1 kΩ. Its current rating is
63235. The three sides of an admittance triangle denote
63236. A step voltage E is applied to an R-L series circuit. At t = 0, the current in the circuit is
63237. To find current in a resistance connected in a network, Thevenin's theorem is used VTH = 20 V and RTH = 5 Ω. The current through the resistance
63238. In figure, the magnitude of V
63239. A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t =
63240. The driving point impedance of a network is The number of energy storing elements in the network is
63241. Two currents have the same peak value. Wave 1 is sinusoidal and wave 2 is rectangular. The ratio of their heating effects are
63242. The following differential equation has
63243. If the transmission parameters of the given networks are A = C = 1, B = 2 and D = 3, then the value of Zm is
63244. In figure, the current through 10 V battery is
63245. The switch in figure is initially closed. At t = 0 the switch is opened. At t = 0+, the current through R is
63246. The ABCD parameters of ideal n : 1 transformer shown in the figure are . The value of X will be
63247. If , the network has
63248. The power dissipated in 4 Ω resistance in figure is
63249. The total inductance of two coils is 60 mH in series aiding connection and 40 mH in series opposing connection. The mutual inductance between coils is
63250. The transfer function of an R-L-C circuit given by The Quality factor (Q-factor) of this circuit is