A series RLC circuit resonates at 1 MHz. At frequency of l.l MHz, the circuit impedance will be :
(a) capacitive (b) inductive (c) resistive (d) none of these Ans: B
Showing posts with the label ECE Objective type Questions and AnswersShow all
In band pass filter, the series element is :
(a) capacitive (b) inductive (c) scries combination of L and C (d) shunt combination of L and C Ans: C
The phase angle for a series RC circuit may be computed as the angle between the following phasors.
(a) resistance, impedance (b) resistance, rectance (c) resistance, impedance (d) none of these Ans: A
The power factor for a circuit is of the order of ________.
(a) 0.30 (b) 0.40 (c) 0.50 (d) 0.60 Ans: D
In a band stop filter, the shunt element is :
(a) capacitive (b) inductive (c) series combination of L and C (d) shunt combination of L and C Ans: C
In band pass filter, the shunt element is :
(a) capacitive (b) inductive (c) series combination of L and C (d) shunt combination of L and C Ans: D
The time constant of the capacitance circuit is defined as the time during which voltage across the capacitor
(a) falls to 36.8% of its final steady value (b) rises to 63.2% of its final steady value (c) rises to 38.6% of its …
The power factor for a purely resistive circuit has a value of _____ while a purely inductive circuit results in a value of _____ .
(a) 0, 1 (b) 1,0 (c) 0,-1 (d) -1,0 Ans: B
An active network has _______.
(a) no current source (b) no e.m.f. source (c) neither of the above (d) either of the above Ans: D
In the circuit shown, the ammeter reads 1 ampere and voltmeter 10 volts. The internal resistance of the ammeter is 1 ohm and that of voltmeter is 50 ohms. The value of R is _______.
(a) 111 .2 ohms (b) 120 ohms (c) 100 ohms (d) 112 ohms Ans: D
A capacitor Cat timer = 0+ with initial charge: Q0 acts as :
(a) short circuit (b) open circuit (c) current source (d) voltage source Ans: D
If the wire which is vertical to this page has electron How downward the conductor will have ________.
(a) no magnetic field (b) a counter - clockwise field in the plane of the paper (c) a clockwise field in the plane o…
In RLC circuits, the current at resonance is :
(a) maximum in parallel resonance and minimum in series resonance (b) maximum in series resonance and minimum in p…
At resonance in a series RCL circuit the applied voltage equals the _____ voltage drop.
(a) resistive (b) inductive (c) capacitive (d) reactive Ans: A
The circuit whose properties are not the same in either direction is known as :
(a) unilateral circuit (b) bilateral circuit (c) reversible circuit (d) irreversible circuit Ans: A
In a series RLC circuit at resonance, with Q = 5, the voltage across capacitor is :
(a) equal to the applied voltage (b) greater than the applied voltage (c) less than the applied voltage (d) may be …
Kirchoif's voltage law cannot be used _______.
(a) with parallel circuit (b) to find current in a circuit (c) to find voltage across a resistor in a series circuit…
The value of current at resonance in a series RLC circuit is affected by the value of :
(a) R (b) L (c) C (d) ail the three Ans: A
The phase relationship between wave A and B starting at 60° and 30° respectively is _______.
(a) A leads B by 30° (b) A lags B by 90° (c) B leads A by 60° (d) B lags-4 by 60° Ans: B
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