76952. When a constant voltage source and constant current source are in series, the current source is ineffective.
76953. Identify which of the following is not a tree of the graph shown in figure
76954. The network has 10 nodes and 17 branches. The number of different node power voltages would be
76955. For the time domain response shown in figure the pole
76956. Two capacitor of 1 F each are connected in parallel. Another 1 F capacitor is connected in series with the parallel combination. The total capacitance is
76957. The realization of the term Ks yields
76958. If operator 'a' = 1 ∠120° then (1 - a2) =
76959. In figure, a voltmeter of internal resistance 1200 Ω is connected across 600 Ω resistance and it reads 5 V. The value of R is
76960. For the wave shown in figure, the average and rms values are
76961. A 10 ohm resistance and a 10 ohm capacitor are connected in series across a 100 V ac supply. The rms voltage across resistance is
76962. When a 10 K, 10%, 1/4 Ω resistor is connected in series with a 12 K, ± 1%, 1/4 Ω resistor, the resulting combination has the following specifications
76963. The resonance frequency of the circuit is
76964. Three identical coils each having self inductance L are connected in series so that the fluxes of all the three are in the same direction. If mutual inductance between each pair of coils is M, the total inductance of the arrangement is
76965. In a resistive ac circuit, the current __________ the voltage by __________ .
76966. When two coupled coils of equal self inductance are cormected in series in one way the net inductance is 12 mH and when they are connected in the other way the net inductance is 4 mH. The maximum value of inductance when they are connected in parallel is
76967. An R-L series circuit is excited by a voltage v(t). The circuit was initially relaxed. Which of the following sources of v(t) would cause maximum current at t = 0+?
76968. Power is drawn from a source at power factor 0.7. Pav = 300 watt. The reactive power is
76969. Two capacitors each of capacitance C and breakdown voltage V are joined in series. The capacitance and breakdown voltage of the combination is
76970. The current wave shown in figure is applied at t = 0 to a 0.1 F capacitor. At t = 1 s, the voltage across capacitor is
76971. A capacitor can be represented by a capacitance C in parallel with a resistance R. For a good capacitor, the resistance R should be
76972. If a sheet of a mica is inserted between the plates of an air capacitor, the capacitance
76973. A circuit has two branches 1 and 2 in parallel. If |Q1| = 8 KVAR and |Q2| = 6 KVAR, the magnitude of total kvar drawn form supply will be
76974. When a function Z(s) having a pole at infinity is realized, we get
76975. A specimen of a material has a resistivity of 1.78 x 108 ohm-m. The material is
76976. In a purely capacitive circuit, the current __________ the voltage by __________ .
76977. A circuit has two branches in parallel and each branch has only one element. The applied voltage and source current are v = 200 sin (200t + 30°) and i = 50 sin (200t + 50°). If one branch has capacitor, the other branch contains
76978. In the circuit shown in figure, Is = 4A, Vs = 4, the voltage V is given by
76979. The average value of wave in figure is
76980. If B = 4 + j3, (B)1/3 =
76981. A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10 nF capacitor in the second branch. At resonance frequency, the dynamic resistance is
76982. If each branch of a Delta circuit has impedance 3 Z then each branch of the equivalent Y circuit has impedance.
76983. In the circuit of figure, Thevenin's resistance is 10 Ω
76984. An RLC series circuit has R = 1 Ω, L = 1 H, C = 1 F. The damping ratio is
76985. The circuit shown in the figure, with R = 1/3 Ω, L = 1/4H, C = 3F has input voltage v(t) = sin2t. The resulting current i(t) is
76986. If operator 'a' = 1 ∠120° then (1 + a2) =
76987. Two 2 port circuits are connected cascaded. To determine the response, it is more convenient to use
76988. In the circuit of figure. The current supplied by battery at t = ∞ is
76989. The natural frequency Sn of the given circuit is
76990. For addition and subtraction operations, phasors
76991. The equivalent unit of joule is
76992. Two coils are connected in parallel. Their fluxes are adding. If the connections of one of the coils are reversed, the total inductance of the arrangement
76993. The graph of a network has 6 branches with 3 tree branches. The minimum number of equations required for solution of network is
76994. In figure, S is closed at t = 0. At t = t1, I = 1 A and di/dt = 1 A/s. Then the value of L is
76995. In the circuit of figure, the switch is closed at t = 0. At t = 0+ the current supplied by battery is
76996. If VA = - 10 V and VB = - 15 V, VAB = 5 V.
76997. Assertion (A): Tie set schedule is used in nodal analysis.Reason (R): Loop currents are fictitious quantities.
76998. When a lead acid cell discharges, the specific gravity of electrolyte increases.
76999. For a high pass filter, β = p in attenuation band.
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