A. 10mH
B. 12mH
C. 16mH
D. 20mH

A. 32Ω
B. 62Ω
C. 50Ω
D. 100Ω

## A changing magnetic flux produces around itself an induced_______________?

A. Magnetic field
B. Electric field
C. Electromagnetic force
D. Artificial gravitational field

## pure resistor circuit the voltage and current are_______________?

A. Lagging each other
B. They are at 90? phase difference
C. They have zero phase difference
D. No phase difference

A. V√/√2R
B. V/√2√R
C. V02/√2R
D. 2/√2√R

A. 220V
B. 220/ 2V
C. 110V
D. 220 √2V

## An alternating current or voltage_____________________?

A. fluctuates off and on
B. varies in magnitude alone
C. changes its direction again and again
D. changes its magnitude harmonically and reverses its direction of flow after regularly recurring intervals

## To find the r.m.s value of an alternating current mathematically we need to have ________________?

A. Mean value of I2
B. Square root of mean value of I2
C. Square root of I2
D. Square of 1/2

A. Zero
B. 45°
C. 90°
D. 180°

## A choke is used as a resistance in_________________?

A. DC circuit
B. AC circuits
C. Both AC and DC circuit
D. Full wave rectifier circuit

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