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Electric Circuits

Electric Circuits
Which of the following quantities consists of SI unit as WATT ?

 Current
 Charge
 Force
 Power

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Electric Circuits
A p.d. of 300 V is applied across series combination of 3 μF and 9 μF capacitors. The charge on each capacitor is ___________________ μC.

 675.
 240.
 7.5.
 3600.

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Electric Circuits
The average value of half wave rectified sinusoidal current waveform, whose maximum value is 1A is

 1 A.
 0.318 A.
 0.5 A.
 0.637 A.

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Electric Circuits
Laplace transform analysis gives

 both (a) and (b).
 real response only.
 time domain response only.
 frequency domain response only.

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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 σ/ε.
 ω ε/σ.
  σ/ω ε.

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Electric Circuits
Final value theorem is not applicable for which of the following?

 Both 2 and 3
 unstable systems
 stable systems
 marginally stable systems

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