ELECTRIC CIRCUITS QUIZ

Atoms have no electric charge because they

have an equal number of charged and non charged particles.

have neutrons in their nuclei.

have an equal number of electrons and protons.

have an equal number of neutrons and protons.

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The power dissipated in a pure capacitor is

both (B) and (C) above.

proportional to applied voltage.

proportional to the value of capacitance.

zero.

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A capacitor in a circuit became hot and ultimately exploded due to wrong connection, which type of capacitor it could be?

Any of above.

Ceramic capacitor.

Electrolytic capacitor.

Paper capacitor.

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If emf in a given circuit is given by e = 100 sinω0t, then maximum value of voltage and frequency will be

100 V, 100 Hz.

100 V, 50 Hz.

100√2 V, 100 Hz.

50√2 V, 100 Hz.

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Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A.

3.149

0.5

1

2.56

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The phase angle difference between current and voltage is 90o, the power will be

maximum.

VI.

minimum.

zero.

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The resistivity of the conductor depends on

area of the conductor.

length of the conductor.

none of these.

type of material.

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Three resistors each R Ohm is connected to form a triangle. The equivalent resistance across any terminals is

2R/3.

R/2.

3R/2.

R.

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If the dielectric of a capacitor is replaced by conducting material

the capacitor can store infinite charge.

the capacitance value of the plate will decrease.

the plate will get short circuited.

the capacitor will get heated up due to eddy currents.

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Which metal is deposited for electro forming?

Iron.

Nickel.

Silver.

Chromium.

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