Multiple Choice Questions on Electrical Circuits-2

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Important Multiple Choice Questions in Electrical Circuits

1.       When a number of 2 port networks are connected in cascade, then equivalent can be obtained by
A)     Adding individual Z matrices
B)      Adding individual Y matrices
C)      Multiplying  individual Chain matrices
D)     Multiplying  individual h matrices
2.       A periodic function is said to have a quarter wave symmetry, if it possesses
A)     Even symmetry at an interval of quarter of a wave
B)      Even symmetry and half-wave symmetry only
C)      Even or odd symmetry without the half wave symmetry
D)     Even or odd symmetry with the half wave symmetry
3.       A ramp voltage v(t)=100 V, is applied to an RC differentiating circuit with R=5kΩ and C=4 μF. The maximum output voltage is
A)     0.2 V
B)      2 V
C)      10V
D)     50 V
4.       The reciprocal of a network function is
A)     An immittance function, if the original function is an omittance function
B)      A transfer function, if the original function is a transfer function
C)      Never an immittance function
D)     Never a transfer function
5.       In RLC series resonant circuit at the half power points
A)     Current is half of the current at response
B)      Impedance is half the impedance at resonance
C)      Resistance is equal to the resultant reactance
D)     None of these
6.       The network has7 nodes and 5 independent loops. The number of branches in the network is
A)     13
B)      12
C)      11
D)     10
7.       The maximum value of mutual inductance of two inductively coupled coils with self inductances L1=49mH and L2=81mH is
A)     130 mH
B)      63 mH
C)      32 mH
D)     3969 mH
8.       Power factor of pure inductor is
A)     0
B)      1/1.414
C)      1
D)     2
9.       When compared to a first-order low-pass filter, a second order low-pass filter has
A)     Low voltage gain
B)      Higher voltage gain
C)      Faster drop in filter response
D)     Higher cut off frequency
10.    On closing switch S, the circuit in the given figure is in steady-state. The current in the inductor after opening the switch S will
A)     Decay exponentially with a time constant of 2S
B)      Decay exponentially with a time constant of 0.5S
C)      Consist of two decaying exponentials each with a time constant of 0.5S
D)     Be oscillatory



Comments

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get more: Electrical Circuits 2

16 October 2019 at 08:41
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