Electronic Principles
The peak value of a sine waveform is:

the amplitude at 1.41 times the maximum value
the amplitude at 70.7% of the maximum value
the amplitude at 90% of the maximum value
the maximum positive or negative value
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

Resistances provide the only opposition to current flow
Capacitive reactance provides the only opposition to current flow
Combinations of resistance and capacitive reactance provide any opposition to current flow
None of these
The ac voltage leads the current by 90 degree

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following principles best describes the basic operation of an electromagnet?

Like magnetic poles repel, while unlike poles attract
None of these
Current flowing through a conductor generates a magnetic field
Like magnetic poles attract, while unlike poles repel
Current is induced in a conductor that is moving through a magnetic field

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

None of these
inductive reactance is greater than the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance
capacitive reactance is greater than the inductive reactance
inductive reactance is equal to the capacitive reactance

ANSWER DOWNLOAD EXAMIANS APP