64151. Which one of the following is a cut set of the graph in the given figure?
64152. A 3 phase star-connected load has one capacitor C in R phase and two equal resistances in Y and B phases.The phase sequence is RBY. Then
64153. Reciprocity theorem is applicable to
64154. The first and the last critical frequencies (singularities) of a driving point impedance function of a passive network having two kind of elements, are a pole and a zero respectively. The above property will be satisfied by
64155. In a circuit with capacitance connected to ac source, the rate of change of capacitor voltage is constant.
64156. Assertion (A): If Z1(s) and Z2(s) are positive real then Z1(s) + Z2(s) as well as 1/Z1(s) and 1/Z2(s) are positive real.Reason (R): The poles of a positive real function are real or occur in conjugate pairs.
64157. A variable resistance R and capacitive reactance XC are connected in series. As R is varied, the locus of Z is
64158. The dual of a node is
64159. At t = 0+, the current i1 is
64160. Kirchoff's laws are applicable to
64161. The double energy transients occur in the
64162. The capacitance of a parallel plate capacitor varies as per the equation C(t) = C0 (1 - cos ωt). It is connected to a battery of V volts. The equation for current is
64163. Which one of the following is a passive device/Component?
64164. Which one of the following theorem can be conveniently used to calculate the power consumed by the 10 Ω resistor in the network shown in the above figure?
64165. Which one of the following gives DC supply?
64166. Figure shows a parallel resonant circuit having resonance frequency of 15 MHZ. At this frequency
64167. In an R-C circuit, there is an initial voltage of 3 V across the capacitor. In s domain equivalent circuit, the voltage source to take into account the initial voltage has a strength of
64168. An electrical network with 8 independent nodes will have __________ nodal equations.
64169. An RLC series circuit has . If the poles p1 and p1 are close to jω axis, then
64170. Assertion (A): When a square periodic wave is applied to an RC circuit, the voltage across capacitor is observed to be a triangular periodic wave.Reason (R): The RC circuit works as integrator and its time constant is much larger than time period of input wave.
64171. Assertion (A): In a series resonant circuit current is maximum at resonance.Reason (R): The inductive and capacitive reactances are equal.
64172. Laplace transform of a unit doublet U-2 (t) is
64173. Which part of human body is called ‘sweet bread’?
64174. In the transformer shown in the figure, the inductance measured across the terminal 1 and 2 was 4 H with open terminals 3 and 4. It was 3H when the terminals 3 and 4 were short circuited. The coefficient of coupling would be
64175. An ac network has two sources of the same frequency. The currents in one branch when the sources act independently are 10 ∠30° A and 10 ∠60° A. When both sources act, the current in the branch should be
64176. A network is said to be non-linear if it does not satisfy
64177. For checking the air movement,there is an instrument called:
64178. Buddhism became the state religion during the reign of?
64179. At a frequency less than the resonant frequency
64180. The voltage of single phase supply to residential consumers in India is
64181. Power factor of the following circuit will be unity
64182. In the transformer shown in figure, the inductance measured across terminal 1 and 2 was 4 H with terminals 3 and 4 open. It was 3H when terminals 3 and 4 are short circuited. The coefficient of coupling is
64183. The time constant of the network shown in figure is, when switch is closed.
64184. For an ideal transformer
64185. The relation AD - BC = 1 where A, B, C, D are transmission parameters of a network is valid for
64186. In figure the phase plot
64187. What is the process of copying software programs from secondary storage media to the hard disk called?
64188. A network N is dual of network N if
64189. The resistance of the aluminium conductor (r = 2.83 x 10-8 Ωm) in figure is
64190. The chemical formula of R134ais:
64191. For an RC admittance function
64192. If resistance is 20 Ω and inductance is 2 H in a R-L series circuit, then time constant of this will be
64193. The following table gives some Laplace transforms and the functionsf(t) F(s)1.δ(t) s2. u(t) 1/s3. tu(t) 2/s24. t2u(t) 2s3Of these the correctly matched pairs are
64194. In series as well as parallel resonant circuits, increasing the value of resistance would lead to
64195. The thermostat for the window type air-conditioner is set at:
64196. In solid dielectrics the rate of deterioration doubles for every 10-12°C rise in temperature.
64197. An RLC series circuit is excited by a step voltage E. The circuit current at t = 0 is
64198. The Laplace transform of a function f(t) u(t) is __________ where f(t) is periodic with period T, and y(S) times the L.T. of f(t) for first period. Then
64199. Which of the following have maximum calorific value?
64200. For representing two sinusoidal voltages on a phasor diagram