Two linear capacitors C1 (with an initial voltage of zero across it) and C2 , (with V volts across it initially) and a resistor R are wired into a series circuit which is closed at t = 0.
A. The initial series current depends on V but not on R
B. The final current is inversely proportional to R
C. The final charges on the two capacitors will be of equal magnitude
D. The final voltage on the two capacitors will be of equal magnitude
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The following arrangement consists of an ideal transformer and an attenuator which attenuates by a factor of 0.8. An AC Voltage V
WX1 = 100 V is applied across WX to get an open circuit voltage V
YZ1 across YZ. Next, an ac voltage V
YZ2 = 100 V is applied across YZ to get open circuit voltage V
WX2 across WX. Then,
V W X 1 V Y Z 1 , V Y Z 2 V W X 2 are respectively
A. 100 125 and 100 80
B. 100 100 and 100 80
C. 100 100 and 100 100
D. 100 80 and 100 80
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In the circuit shown below, the current I is
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The current i through the 1 Ω resistor shown in figure below is:
A. − 3 1 A
B. − 5 1 A
C. 5 2 A
D. 1 A
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When L is doubled and C is halved, the resonance frequency of series tuned circuit becomes
A. Doubled
B. Halved
C. One quarter
D. Unchanged
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Consider the following statements for a symmetrical T section11 and Z22 are equal12 and Z21 are equal11 and Z12 are equal21 and Z22 are equal
A. 1 and 2 only
B. 2 and 3 only
C. 3 and 4 only
D. 1, 2, 3 and 4
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Determine Y
12 for the above circuit.
A. 56 1 S
B. − 56 1 S
C. 14 1 S
D. − 14 1 S
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What is the Thevenin resistance seen from the terminals AB of the circuit shown in the figure below?
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After a capacitor has charged for 1 ms, what percentage of current remains in the capacitor
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In the circuit shown, 2-port network N has Z
11 = 10
3 Ω, Z
12 = 10 Ω, Z
21 = -10
6 Ω and Z
22 = 10
4 Ω. The current gain
I 1 I 2 is
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The current in the series R-L circuit at a time t = 0+ is?
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A step voltage is applied to the circuit shown below. What is the transient current response of the circuit?
A. Undamped sinusoidal
B. Overdamped
C. Underdamped
D. Critically damped
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For the equivalent figure circuit shown in the given figure, the values of R
AB and R
BC are respectively
A. 5 Ω and 15 Ω
B. 15 Ω and 30 Ω
C. 30 Ω and 5 Ω
D. 20 Ω and 35 Ω
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A parallel RLC circuit has ω0 = 108 and Q = 20. Given C = 20 pF, the value of R is
A. 0.5 × 104
B. 104
C. 2.0 × 104
D. 25
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The R
eq for the following network is . . . . . . . .
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Superposition theorem is not applicable to a network having which type of element?
A. Unilateral element
B. Linear element
C. Bilateral element
D. Passive element
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A graph is said to be connected graph if-
A. only two nodes are connected
B. you cannot get from any node to any other node by following a sequence of borders
C. you can get from any node to any other node by following a sequence of edges
D. only three nodes are connected
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A transfer function having open zero at right half plane is a/an
A. minimum phase function
B. non-minimum phase function
C. unstable function
D. constant phase function
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The power in a series RLC circuit will be half of that at resonance when the magnitude of the current is equal to
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In the passband of a symmetric lattice filter, the nature of XA and XB where XA and XB represent the reactance of the series arm and the diagonal arm of the lattice is of
A. The same sign
B. The opposite sign
C. The same sign and equal magnitude
D. Of arbitrary sign
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