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Electric Circuits

Electric Circuits
Condition of symmetry in ABCD parameter representation is

 C = D.
 AD - BC = 1.
 B = D.
 A = D.

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Electric Circuits
Phase voltages of a star connected alternator are ER = 240∠0o V, EY = 240∠-120o V and EB = 240∠ + 120o V. What is the phase sequence of the system?

 BYR.
 RYB.
 YBR.
 RBY.

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Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.5 F
 0.05 F
 0.2 F
 0.02 F

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Electric Circuits
If a resistor is connected across the voltage source and the frequency of voltage and current wave form is 50Hz, then what is frequency of instantaneous power

 0 Hz.
 50 Hz.
 100 Hz.
 150 Hz.

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Electric Circuits
What is the SI unit of electric current ?

 Faraday.
None of these
 Ampere.
 Ohm.

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Electric Circuits
In a lead acid cell, hydrogen is liberated at

 positive plate.
 none of the plates.
 both plates.
 negative plate.

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MORE MCQ ON Electric Circuits

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