Multiple Choice Questions on Electrical Circuits -3

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Important Multiple Choice Questions in Electrical Circuits

1.       If a capacitor is energised by a symmetrical square wave current source, then the steady state voltage across the capacitor will be
A)     Square wave
B)      Triangular wave
C)      Step wave
D)     Impulse wave
2.       If the step response of an initially relaxed circuit is known, then the ramp response can be obtained by
A)     Integrating the step response
B)      Differentiating the step response
C)      Integrating the step response twice
D)     Differentiating the step response twice
3.       A water boiler of home is switched on to the AC mains supplying power at 230V/50Hz. Th frequency of instantaneous power consumed by the boiler is
A)     0 Hz
B)      50 Hz
C)      100 Hz
D)     150 Hz
4.       In a series RLC high Q circuit, the current peaks at a frequency
A)     Equal to the resonant frequency
B)      Greater than the resonant frequency
C)      Less than the resonant frequency
D)     None of these
5.       A passive 2-port network is in a steady-state. Compared to its input, the steady state output can never offer
A)     Higher voltage
B)      Lower impedance
C)      Greater power
D)     Better regulation
6.       Two two-port networks are connected in cascade. The combination is to be represented as a single two-port network. The parameters of the network are obtained by multiplying the individual
A)     Z-parameter matrix
B)      h-parameter matrix
C)      y-parameter matrix
D)     ABCD parameter matrix
7.       The fourier series expansion of a periodic function with half wave symmetry contains only
A)     sine terms
B)      cosine terms
C)      odd harmonics
D)     even harmonics
8.       voltage transfer function of a simple RC integrator has
A)     a finite zero and a pole at infinity
B)      a finite zero and a pole at the origin
C)      a zero at the origin and a finite pole
D)     a zero at infinity and a finite pole
9.       The impulse response of an R-L circuit is a
A)     Rising exponential function
B)      Decaying exponential function
C)      Step function
D)     Parabolic function
10.   Superposition theorem is not applicable to networks containing
A)     Nonlinear elements
B)      Dependent voltage sources
C)      Dependent current sources

D)     Transformers

Comments

Anonymous said…
can you please give the explanation
13 July 2017 at 04:55
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