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Electric Circuits

Electric Circuits
Reciprocity condition for h parameters is

 h11h22 - h21h12 = 0.
 h12 = h21.
 h12 = h21.
 h12 = - h21.

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Electric Circuits
Which of following capacitors preferred for high frequency circuits?

 Air capacitor.
 Mica capacitor.
 Electrolytic capacitor.
 Glass capacitor.

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit decrease if frequency of voltage source increases?

 VR and I.
 VL and VR.
 VL and Z.
 Z and I.

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Electric Circuits
A constant current source supplies a electric current of 300 mA to a load of 1 KΩ. When the load changed to 100 Ω, the load current will be

 3 A.
 30 mA.
 300 mA.
 100 mA.

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Electric Circuits
A variable capacitance is one whose capacitance

 changes with voltage.
 changes with temperature.
 changes with time.
 can be changed manually or by mechanical force.

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Electric Circuits
The current in a chemical cell is a movement of

 positive hole charges.
  positive and negative ions.
  negative ions only.
  positive ions only.

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MORE MCQ ON Electric Circuits

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