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Electric Circuits

Electric Circuits
Which part of magnetic path requires largest mmf?

 Coil.
 Air gap.
 Inductance.
 Core.

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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

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

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Electric Circuits
The resistance of 200 W, 200 V lamp is

 400 Ω.
 800 Ω.
 100 Ω.
  200 Ω.

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Electric Circuits
If C be the capacitance, V be the potential difference and I be the current, then I / CV will have the unit of

 reactive power.
 time.
 frequency.
 power.

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Electric Circuits
For cadium plating electrolyte used is

 cadmium sulphate and sulphuric acid.
 sodium cyanide, cadmium and caustic soda.
 cadmium hexa metaphosphate.
 any of above.

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

 XL > R
All of these
 XL < R
 XL = R

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MORE MCQ ON Electric Circuits

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