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Electric Circuits

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

 XL=R
All of these
 XL>R
 XL

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Electric Circuits
A parallel plate capacitor contain there dielectric layers of 1, 2 and 3 respectively and thickness of dielectric layers are 0.2 mm, 0.3 mm and 0.4 mm respectively. If area of plate is 20 cm2. What is the value of capacitance?

 36.6 pF.
 32 pF.
 30 pF.
 None of them.

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Electric Circuits
Electro-chemical equivalent is usually expressed in

  mg per coulomb.
  mg per volt.
  mg per kW.
  mg per kVA.

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Electric Circuits
Which of the following defined the average value ?

 Charge transfer
 Heating effect
 Current
 Voltage

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Electric Circuits
Three resistances have the following ratings 150 Ω at 5 %, 100 Ω at 5 % and 200 Ω at 5 % respectively. The percentage error when all the three are connected in series will be

  + 6 %.
  + 5 %.
 + 7 %.
 + 8 %.

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Electric Circuits
Bulb in street lighting are connected in

 series.
 series parallel.
 end of end.
 parallel.

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