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Electric Circuits

Electric Circuits
Select the wave that has the least value of form factor.

 Square wave.
 Sine wave.
 Rectangular wave.
 Triangular wave.

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Electric Circuits
Three element having conductance G1, G2 and G3 are connected in parallel. Their combined conductance will be

 (G1 + G2 + G3) - 1.
 1 / G1 + 1 / G2 + 1 / G3.
 (1 / G1 + 1 / G2 + 1 / G3) - 1.
 G1 + G2 + G3.

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Electric Circuits
When power factor angle is varying, the shape of the current locus is

 Circle
 Triangle
 Straight line
 Semicircle

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit decrease if frequency of voltage source increases?

 VL and Z.
 VL and VR.
 Z and I.
 VR and I.

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Electric Circuits
An electric field line and an equipotential surface are

 inclined at any angle.
 none of above.
 always parallel.
 always perpendicular.

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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 .
  50.8 V.
 40.8 V.
  30.6 V.

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