In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of
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Electrical Engineering · all questionsA.C Fundamentals, Circuits And Circuit Theory
A.C Fundamentals, Circuits And Circuit Theory
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Which of the following circuit component opposes the change in the circuit voltage ?
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For the same peak value, which of the following wave has the least mean value?
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In a sine wave the slope is constant
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For the same peak value which of the following wave will 'have the highest r.m.s. value?
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In a R-L-C circuit
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Inductance of coil
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Power factor of the following circuit will be unity
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The voltage of domestic supply is 220 V. This figure represents
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A parallel AC. circuit in resonance will
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The peak value of a sine wave is 200 V. Its average value is
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The product of apparent power and cosine of the phase angle between circuit voltage and current is
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Which of the following waves has the highest value of peak factor ?
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In a purely inductive circuit
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Pure inductive circuit takes power from the A.C. line when
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The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 ohms. If frequency is increased to 100 Hz, reactance becomes __________ ohms.
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Time constant of a circuit is the time in seconds taken after the application of voltage to each
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Magnitude of current at resonance in R-L-C circuit
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Inductance of a coil Varies
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Two waves of the same frequency have opposite phase when the phase angle between them is
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