Electronic Principles
Which one of the following statements best describes magnetic hysteresis?

Hysteresis is most apparent when the core material is saturated
Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently
Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet
None of these
Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
None of these
The actual frequency of a sine waveform is 1.41 times the working frequency
The longer the period of a waveform, the lower its frequency
The higher the amplitude of a waveform, the higher its frequency

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following principles best describes the basic operation of a generator?

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

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements is true for the currents in a parallel RC circuit?

The total current is equal to the sum of the currents for the resistance and capacitance
None of these
The total current is less than the sum of the currents for the resistance and capacitance
The current always has the same amplitude and phase for every part of the circuit
The total current. is greater than the sum of the currents for the resistance and capacitance

ANSWER DOWNLOAD EXAMIANS APP