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Electric Circuits

Electric Circuits
In a delta network each element has value R. The value of each element in equivalent star network will be

 R / 2.
 R / 6.
 R / 4.
  R / 3.

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Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.02 F
 0.5 F
 0.2 F
 0.05 F

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Electric Circuits
Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances?

 6 Ω and 9 Ω.
 3 Ω and 9 Ω.
  1.5 Ω and 3 Ω.
  3 Ω and 6 Ω.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The voltage drop across R is

 24.4 V .
  30.6 V.
 40.8 V.
  50.8 V.

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Electric Circuits
Poorest conductor of electricity is

  Steel.
  Silver.
  Aluminium.
  Carbon.

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Electric Circuits
The phase angle difference between current and voltage is 90o, the power will be

 zero.
 VI.
 minimum.
 maximum.

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MORE MCQ ON Electric Circuits

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