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Electric Circuits

Electric Circuits
What will be the rms value of rectangular wave with amplitude 10 V?

 11.2 V.
 10 V.
 5√2 V.
 7.7 V.

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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?

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

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Electric Circuits
Number of branches of a graph should be --------- number of branches of a network

 less than
 less than equals to
 greater than
 equals to

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Electric Circuits
Ceq of two capacitors connected in series is given by

 C1C2.
 C1 C2 / (C1 + C2).
 C1 = C2.
 C1 + C2.

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

 XL=R
 XL>R
 XL
All of these

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Electric Circuits
When a lossy capacitor with a dielectric of permittivity ε and conductivity σ operates at a frequency ω the loss tangent for the capacitor is given by

 σ ω ε.
 ω ε/σ.
 ω σ/ε.
  σ/ω ε.

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