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Electric Circuits

Electric Circuits
In the given figure the value of the source voltage is

 44 V.
 30 V.
 12 V.
 24 V.

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Electric Circuits
A capacitor

 passes AC but blocks DC.
 passes DC but blocks AC.
 passes both AC and DC.
 blocks both AC and DC.

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Electric Circuits
The synchronous speed for the seventh space harmonic mmf wave of 8 pole, 50 Hz induction machine will be

 107.14 rpm in forward direction.
 5250 rpm in forward direction.
 5250 rpm in reverse direction.
 107.14 rpm in reverse direction.

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Electric Circuits
The ratio of intensity of magnetisation to the magnetising force is known as

 none of above.
 flux density.
 relative permeability.
 susceptibility.

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Electric Circuits
The life of a lead acid battery is expected to be

 6 months.
 2 to 5 years.
 10 to 15 years.
 1 year.

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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.
 σ ω ε.
 ω ε/σ.
 ω σ/ε.

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MORE MCQ ON Electric Circuits

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