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Electric Circuits

Electric Circuits
Air gap flux density is of the order of

  0.65 - 0.9 T.
 0.75 - 0.8 T.
 0.85 - 0.9 T.
  0.35 - 0.5 T.

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Electric Circuits
Two wires of A and B of the same material and length ‘l’ and ‘2l’ have radius ‘r’ and ‘2r’ respectively. The ratio of their specific resistance will be

 4:1.
 1:2.
 1:1.
 1:8.

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Electric Circuits
In series RLC circuit which of the following represents the Q factor ?

 XC/R
 VR/V
 XL/R
All of these

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Electric Circuits
In the figure given, the value of R is

 18 Ω.
 24 Ω.
 12 Ω.
 10 Ω.

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Electric Circuits
While Thevenizing a circuit between two terminals, VTH is equal to

 open circuit terminal voltage .
 short circuit terminal voltage.
 net voltage available in the circuit.
 none of these.

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Electric Circuits
If the dielectric of a capacitor is replaced by conducting material

 the capacitance value of the plate will decrease.
 the capacitor can store infinite charge.
 the plate will get short circuited.
 the capacitor will get heated up due to eddy currents.

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