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Electric Circuits

Electric Circuits
If N is the number of nodes and b is the number of branches in a network, then rank of cut set matrix is

 N - 1.
 b - N - 1.
 N.
 b - N + 1.

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Electric Circuits
In RLC parallel circuit if current through capacitor and inductor is equal. Then What is the power factor?

 unity
 leading
 lagging
 zero

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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 phase angle of current in respect of supply voltage will be

 20.2o.
 28.8o.
 40.4o.
 32.1o.

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Electric Circuits
Poorest conductor of electricity is

  Aluminium.
  Silver.
  Carbon.
  Steel.

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Electric Circuits
The norton equivalent of the circuit shown in the figure is

 1A, 5/6 Ohm
 0.75 A, 1.5 Ohm
 1A, 1.5 Ohm
 0.75A, 5/6 Ohm

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Electric Circuits
A ceramic and a mica capacitor have the same physical dimension. Which has the higher value of capacitance?

  It is impossible to conclude on the basis of information supplied.
 Both have identical value of capacitor.
 Ceramic capacitor.
 Mica capacitor.

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