Electronic Principles
Current and voltage are said to be in phase when:

their waveforms are both ac or both dc
their waveforms cross through zero and reach positive and negative peaks at the same time
they have the same amplitude and frequency
None of these
All of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
A high-pass filter:

passes lower-frequency signals and reduces higher-frequency signals
increases the level of all frequencies by a significant amount
passes higher-frequency signals and reduces lower-frequency signals
has no effect on ac signals
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following is a direct statement of Ohm's law?

The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
None of these
The total resistance of a parallel circuit is less than the value of the smallest resistance
The algebraic sum of currents entering and leaving a point is equal to zero
The algebraic sum of voltages in a loop is equal to zero

ANSWER DOWNLOAD EXAMIANS APP