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Electric Circuits

Electric Circuits
In RLC series circuit R = 2Ω, L = 2mH and C = 1μF and applied voltage is 10V DC. Then what is steady state current value?

 0A
 1A
 2A
 5A

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Electric Circuits
In direct arc furnace which of following is of high value?

 Power factor.
 Voltage.
 Current.
 All of above.

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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.
  3 Ω and 6 Ω.
  1.5 Ω and 3 Ω.

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Electric Circuits
Which of the following is the heaviest?

 Molecule.
 Proton.
 Electron.
 Atom.

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Electric Circuits
Three identical inductors are connected in delta with a 220 V, 50 Hz, 3 - φ, supply. If the phase current is 24 A, then what is the value of each of the inductance?

 None of these.
 0.058 H.
 0.029.
 0.049 H.

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Electric Circuits
Third pin of a 3 pin plug is thicker and longer

 none of these.
 for protection purpose.
 for designing purpose.
 all pins are of same size.

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