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Electrical Engineering Objective Questions { Harmonics }



8. There are no transients in pure resistive circuits because they
A. offer high resistance
B. obey Ohm's law
C. have no stored energy
D. are linear circuits
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9. Transient current in electrical circuits are associated with
A. inductors
B. capacitors
C. resistors
D. both (a) and (b)
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10. The transients which are produced due to sudden but energetic changes from one steady state of a circuit to another are called transients.
A. initiation
B. transition
C. relaxation
D. subsidence
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11. In an R-L circuit connected to an alternating sinusoidal voltage, size of transient current primarily depends on
A. the instant in the voltage cycle at which circuit is closed
B. the peak value of the steady-state current
C. the circuit impedance
D. the voltage frequency
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12.  Double-energy transients are produced in circuits consisting of
A. two or more resistors
B. resistance and inductance
C. resistance and capacitance
D. resistance, inductance and capacitance
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13.  The transient current in a loss-free L-C circuit when excited from an ac source is a/an sine wave.
A. over-damped
B. undamped
C. under-damped
D. critically damped
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14. Transient current in an R-L-C circuit is oscillatory when
A. R =0
B. R> 2f-17
C. R <2
D. R =2
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