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Complex AC MCQs

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Question 46easy

The two complex number are given as : 5(cos30? +j sin30?); 10(cosI5? + j sin15?) The value of product of these two numbers is equal to

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Question 47easy

In polar form, conductance will be written as

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Question 48easy

If the admittance of a parallel a.c. circuit is increased, the circuit current

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Question 49easy

The conductance and susceptance components of admittance are

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Question 50easy

At parallel resonance, the circuit offers impedance equal to

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Question 51easy

The Q-factor of a parallel resonant circuit is given by

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Question 52easy

At parallel resonance, the circuit draws a current of 2 mA. If the Q of he circuit is 100, then current through the capacitor is

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Question 53easy

In a parallel RC circuit with R> Xc, the phase angle will be

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Question 54easy

When it is not appropriate to use the formula fr = 1/2E ,r1.7 for a practical parallel LC circuit?

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