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Electric Circuits

Electric Circuits
Condition of reciprocity in Y-parameter representation is

 Y11 = Y12.
 Y12 = Y21.
 Y11 = Y22.
 Y12 = Y22.

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Electric Circuits
Power factor can be defined as

 cosine of angle between voltage and current.
 both option B and C.
 sine of voltage and current.
 ratio of resistance versus impedance.

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Electric Circuits
Disadvantages of constant k type filter

  none of these.
  attenuation does not increase rapidly beyond cut off frequency.
  characteristic impedance unchanged in pass band.
  both A and B.

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Electric Circuits
In RLC parallel circuit to get Q>1 which of the following is required?

 XL>R
 XL=R
All of these
 XL

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Electric Circuits
For steady state current inductor acts as

 Short circuit
 Voltage source
 Current source
 Open circuit

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Electric Circuits
Current source has internal impedance connected in parallel with it whereas voltage source has internal impedance connected in __________________ with it.

  none of them
 series
  both of above
 parallel

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