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Electric Circuits

Electric Circuits
In a series resonant circuit impedance is

 maximum.
 none of these.
 zero.
 minimum.

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Electric Circuits
In RL series circuit R=2Ω and L=2mH. What is the value of time constant?

 100sec
 2msec
 4msec
 1msec

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The phase angle of current in respect of supply voltage will be

 32.1o.
 28.8o.
 40.4o.
 20.2o.

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Electric Circuits
Time constant is the time taken for response to rise -------of maximum value?

 90%
 63.2%
 68.3%
 100%

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Electric Circuits
The maximum value of a current wave is 2A. If the form factor of a current wave is 1.5 and the peak factor is 2.7, find the average value in Amperes.

 1.57 A.
 0.741 A.
 1.414 A.
 0.494 A.

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Electric Circuits
While comparing magnetic field and electric circuits, the point of dissimilarity exists while considering

 permeance and conductance.
 flux and current flow.
 mmf and emf.
 reluctance and resistance.

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