ELECTRIC CIRCUITS QUIZ

A pole of driving point impedance is

zero voltage for a finite value of driving current.

zero voltage for a finite value of driving voltage.

zero current for a finite value of driving current.

zero current for a finite value of driving voltage.

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What is the unit of potential difference ?

Volt

Ampere

Ohm

Watt

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A wire of 0.14 mm diameter and specific resistance 9.6 Ω - cm is 440 cm long. The resistance of the wire will be

27.4 Ω.

11.3 Ω.

9.6 Ω.

13.7 Ω.

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You have to replace 1500 Ω resistor in radio. You have no 1500 Ω resistor but have several 1000 Ω ones which you would connect

three in parallel.

two in parallel and one in series.

three in series.

two in parallel.

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An ideal constant voltage source has ___ internal impedance whereas a constant current source has internal impedance.

zero, zero

infinite, infinite

infinite, zero

zero, infinite

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Highest current density is usually recommended for

tin plating.

bronze plating.

chromium plating.

cadmium plating.

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

Leading

Zero

Unity

Lagging

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The coils having self inductor of 10 mH and 15 mH have an effective inductor of 40 mH, when connected in series aiding. What will be the equivalent inductor if we connect them in series opposing

0 mH.

10 mH.

5 mH.

20 mH.

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In which of the circuits power factor can be zero?

inductive.

both ‘a’ and ‘b’

capacitive.

resistive.

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Sulphation in a lead acid battery occurs due to

trickle charging.

fast charging.

heavy charging.

incomplete charging.

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