77151. In one time constant, the current in a circuit reaches __________ percent of its final value.
77152. Assertion (A): Laplace transform of f(t) = e-at sin ωt is Reason (R): If Laplace transform of f(t) is F(s), then Laplace transform of e-at f(t) is F(s + a).
77153. A series RLC circuit is overdamped when
77154. The function (s + 2) (s + 4)/[(s + 1)(s + 3)]
77155. In figure, V1 = 40 V when R = 10 Ω, if R = 0, V2 will be
77156. The series element of a band stop filter is
77157. In a network containing resistances, reactances the root of the characteristic equation give for the circuit
77158. The rocks formed due to consolidation of weathered particles of the existing rocks are called:
77159. The circuit whose properties are same in either direction is known as
77160. Assertion (A): Peak to peak value of a sinusoidal wave is 2.828 times the rms value.Reason (R): Peak factor of a sinusoidal wave is 1.414.
77161. Complex poles give rise to oscillatory terms in the response.
77162. While drawing vector diagram for a series circuit, the reference vector is
77163. In all insulators the bonding is covalent.
77164. In a purely resistive circuit the instantaneous power varies from zero to maximum twice in each cycle.
77165. In terms of ABCD parameters, the image parameter Z11 is equal to
77166. A coil with large distributed capacitance has a
77167. The voltage transfer functions of two port circuits connected in cascade can be easily found from
77168. In figure the number of tree branches and links respectively are
77169. For a transfer function the coefficients of the numerator and denominator polynomials in s must be real.
77170. A steel bar needs 1200 AT to magnetise it. The voltage that must be applied to the magnetising coil of 100 turns and 10 Ω resistance is __________ volt.
77171. In a series resonant circuit, the resonant frequency is
77172. If a function Z(s) has a pole at infinity, then
77173. In brick masonry the frog of the brick is generally kept on:
77174. A circuit said to be lumped when physical dimensions of all the component are __________ .
77175. Assertion (A): Q factor of a series resonant circuit is Reason (R): High Q means better selectivity.
77176. Drift velocity of electrons is generally less than 1 mm/s.
77177. Which of the following theorems is a manifestation of law of conservation of energy?
77178. An ac circuit has two branches in parallel. The impedances of the two branches are equal. The p.f. of one branch is 0.8 lagging and 0.8 leading. The overall p.f. is
77179. When sources of different frequencies feed a network the only method of solution is superposition theorem.
77180. In a lead acid battery
77181. The capacitance of a cylindrical capacitor is directly proportional to its length.
77182. In a passive band pass filter, the resonant frequencies of series and shunt arms are equal.
77183. Paley Wiener criterion states that a necessary and sufficient condition for an amplitude function |H(jω)| to be causal is that
77184. Which is correct for a transfer function?
77185. Choose the correct option, where H(s) is transfer function, Z(s) is driving point impedance functions
77186. When three 100 K, ± 10% fixed resistors of 1/4 W Power rating are connected in parallel, the resulting 33 K resistor will have a tolerance specification and power rating of
77187. A capacitor with initial charge q0 at t = 0+ acts as
77188. Form factor for a sine wave is
77189. Choose the correct option, if b (branch), n (nodes), l (links)
77190. The resistance of human body is about
77191. At half power frequencies the current in R-L-C series circuit is __________ times current at resonance
77192. In figure, V reads 45V. Then I =
77193. A capacitor behave to d.c. as
77194. First class bricks should not absorb water more than:
77195. A system described by the following differential equation is initially rest for input x(t) = 2 u(t), the output y(t) is
77196. In a minimum function
77197. In a series circuit with fixed R and variable XL, the current locus lies in the fourth quadrant.
77198. A parallel connection of circuit is at below resonance circuit behave as
77199. Assertion (A): In figure the coefficients , n = 1, 2, ... and bn = 0Reason (R): The periodic function is symmetrical about t = T and t = T/2.
77200. When an ac circuit has sources of different frequencies, the only method of analysis is superposition theorem.
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