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Electric Circuits

Electric Circuits
In a series resonance circuit if bandwidth is 1 MHz and inductance is 1 mH, then what is the resistance value?

 1 MΩ
 1 KΩ
 100 Ω
 1 Ω

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Electric Circuits
Common impurity in battery electrolyte is

 lead sulfate.
 iron.
 sodium chloride.
 dust.

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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
In balanced bridge, if the positions of detector and source are interchanged, the bridge will still remain balanced. This can be explained from which theoem

 Reciprocity theorem
 Thevinin's theorem
 Norton's theorem
 Compensation theorem

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Electric Circuits
1 F is theoretically equal to

 ratio of 1 C to 1 V
 none of these
 ratio of 1 V to 1 C
 1 ohm of resistance

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The voltage drop across L is

  31.9 V.
 45.5 V.
 50.5 V.
  39.1 V.

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