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Electrical Engineering · all questions

A.C Fundamentals, Circuits And Circuit Theory
practice.

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Which of the following refers to a parallel circuit?

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In any A.C. circuit always

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The transient currents are associated with the

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The inductance of a coil can be increased by

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Power factor of an electrical circuit is equal to

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The 'time constant' of a series RC circuit is

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The power is measured in terms of decibels in case of

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Inductance affects the direct current flow

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The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces

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The ratio of active power to apparent power is known as factor.

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In a three-phase supply floating neutral is undesirable because it way give rise to

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Power factor of electric bulb is

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If two sine waves of the same frequency have a phase difference of JT radians, then

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The power factor at resonance in R-L-C parallel circuit is

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The period of a wave is

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Which of the following coil will have large resonant frequency?

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The r.m.s. value and mean value is the same in the case of

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Power factor of the system is kept high

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For a sine wave with peak value Imax the r.m.s. value is

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For a frequency of 200 Hz, the time period will be

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