Electronic Principles
Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question?

None of these
1000 W
20 W
200 W
100 W

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage causes current to flow in two directions at the same time
The voltage reverses polarity periodically
None of these
The voltage remains at one polarity and at a steady level
The voltage remains at one polarity but changes value periodically

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
One henry of inductance is defined as:

the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
None of these
the amount of counter emf required to reduce a current to 1 A
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
the amount of inductance required to change the frequency of a current by 1 Hz

ANSWER DOWNLOAD EXAMIANS APP