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Electric Circuits

Electric Circuits
From the given figure find the R3

 25 mega ohm
 25 mili ohm
 25 kilo ohm
 25 ohm

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Electric Circuits
Two resistors R1 and R2 give combined resistance of 4.5 Ohm when connected in series and 1 Ohm when in parallel, the resistances are

 1.25 Ohm and 3.25 Ohm.
 1.5 Ohm and 3 Ohm.
 2 Ohm and 2.5 Ohm.
 2.2 Ohm and 2.3 Ohm.

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Electric Circuits
The delta equation of given star connected impedance ZQR is equal to

 40 Ω.
 (20 + j10) Ω.
 (5 + j10 / 3) Ω.
  (10 + j30) Ω.

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Electric Circuits
Specific resistance is measured in

  ohm/cm.
  mho.
  ohm.
  ohm - cm.

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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

 1:1.
 1:8.
 1:2.
 4:1.

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Electric Circuits
Mica capacitor are characterised by all of following except

 low losses.
 accurate value.
 low leakage reactance.
 stable operation.

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MORE MCQ ON Electric Circuits

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