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Electric Circuits

Electric Circuits
Which of the following materials has highest electrical conductivity ?

  Aluminium.
  Steel.
  Silver.
  Copper.

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Electric Circuits
A particular current is made up of two component : a 10 A and a sine wave of peak value 14.14 A. The average value of current is

 zero.
 14.14 A.
 10 A.
 24.14 A.

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Electric Circuits
Active filter consists of

 inductor.
 op-amp.
 op-amp and capacitor.
 capacitor.

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Electric Circuits
A capacitor is connected to supply with switch and the switch is connected between capacitor and supply. Initially switch is open at time zero, and then switch is closed. Then how capacitor behaves at time t = 0+?

 dielectric losses increases.
 open circuit.
 short circuit.
 dielectric losses decreases.

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Electric Circuits
Constant K type HPF (high pass filter) having cut off frequency 12 KHz and nominal impedance Ro = 500 Ω Find shunt arm inductor L and series arm capacitance C for T and π section of HPF ?

 L = 3.316 mH, C = 132 μF.
 L = 3.316 mH, C = 0.0132 μF.
 L = 0.0132 mH, C = 0.0132 μF.
 None of these.

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Electric Circuits
Current magnification will occur in which of the following case?

 Both
 Series resonance
None of these
 Parallel resonance

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MORE MCQ ON Electric Circuits

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