ELECTRIC CIRCUITS QUIZ

Emf induced in a coil rotating in a uniform magnetic field will be maximum when the

flux linking with the coil is maximum.

rate of change of flux linkage is minimum.

rate of change of flux linkage is maximum.

rate of cutting flux by coil sides is minimum.

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In the given figure the value of the source voltage is

24 V.

12 V.

30 V.

44 V.

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In series RLC circuit what is the power factor just above the resonance frequency?

Unity

Lagging

Leading

Zero

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For ideal tank circuit what is the value of dynamic impedance?

None of these

Both

∞

0

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If the three colour bands of a resistor are grey, violet and gold, what is the value of the resistor?

8.7 ohms.

6.7 ohms.

9.7 ohms.

7.7 ohms.

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Ceq of two capacitors connected in series is given by

C1 + C2.

C1C2.

C1 = C2.

C1 C2 / (C1 + C2).

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A balanced three Phase Y-connected load has one phase voltage VB = 277∠45o V. The phase sequence is RYB. The line to line voltage VRY is

480∠45o V.

339∠- 45o V.

480∠ - 45o V.

339∠45o V.

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In RL series circuit R=2Ω and L=10mH and applied voltage is 10V DC. Then find the current in the network?

5A

10A

1A

0A

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Efficiency of electrical machines should be calculated by measuring

output and input.

losses.

losses and output.

losses and input.

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Which of the following substance when added to electrolyte promotes smooth deposition?

Any of above.

Gelatine.

Glucose.

Albumen.

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