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Recent questions tagged additional question

Give the expression for average value of a.c voltage $V = V_0\; sin \omega t$ over time interval $ t = 0 \; to \; t = \frac {\pi}{\omega}$

asked Dec 30, 2016 by suganyadevi.p

1 answer

An electrical element x connected to an alternating voltage source has current through it leading the voltage by $\frac {\pi}{2}$ radius. Identify x and write an expression for its reactance.

asked Dec 30, 2016 by suganyadevi.p

1 answer

Self induction of an air core inductor increases from 0.01 MH to 10 MH on introducing an iron core into it. What is the relative permeability of the core used?

asked Dec 30, 2016 by suganyadevi.p

1 answer

The dimension of $\frac {h}{e}$ is the same as that of magnetic flux $\phi$. Say true or false.

asked Dec 30, 2016 by suganyadevi.p

1 answer

The dimensions of electric and magnetic flux are same. Say true or false.

asked Dec 30, 2016 by suganyadevi.p

1 answer

A coil of a metal wire is kept stationary in a non - uniform magnetic field. An emf is induced in the coil. Say true or false.

asked Dec 30, 2016 by suganyadevi.p

1 answer

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