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Electric Circuits

Electric Circuits
The life of a lead acid battery is expected to be

 2 to 5 years.
 10 to 15 years.
 6 months.
 1 year.

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Electric Circuits
Which of the following are typical resistance and power-dissipation values for a carbon-composition resistor?

 1000000 ohms, 1 W.
 10000 ohms, 10 W.
 5000 ohms, 100W.
 10 ohm, 50 W.

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Electric Circuits
The energy stored by a capacitor is given by

 Q2 / 2C.
 all of them.
 1/2 QV.
 1/2 CV2.

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

 Zero
 Unity
 Lagging
 Leading

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Electric Circuits
The value of unity impulse function at time (t) = 0 is

 infinite.
 1.
 indeterminate.
 0.

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Electric Circuits
Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances?

  3 Ω and 6 Ω.
 3 Ω and 9 Ω.
 6 Ω and 9 Ω.
  1.5 Ω and 3 Ω.

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