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Electric Circuits

Electric Circuits
Open circuit voltage of a fully charged lead acid cell is

 2.5 V.
 1.9 V.
 2.7 V.
 2 V.

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Electric Circuits
Kirchhoffs laws are valid for

  linear circuit only.
  both linear and non-linear circuits.
  non-linear circuits only.
  passive time invariant circuits.

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Electric Circuits
In series R, L circuit power factor can be defined as

 P/S
All of these
 Vr/V
 R/Z

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Electric Circuits
A series RLC circuit is connected across a 240V, 50 Hz supply. When the voltage across capacitor is 250V, a maximum current of 0.5A flows in the circuit. Find the resistance.

 100 Ohms.
 480 Ohms.
 500 Ohms.
 1000 Ohms.

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Electric Circuits
Three resistors of 4 ohm, 6 ohm and 8 ohm are in parallel. In which resistor, power dissipation will be maximum

 6 Ohm.
 equal in all resistors.
 4 Ohm.
 8 Ohm.

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Electric Circuits
What are the points to be mentioned in specifying main switches?

  Both A and B.
  Current rating.
  None of these.
  Voltage grade.

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MORE MCQ ON Electric Circuits

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