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

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

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements most accurately describes the nature of inductive reactance?

Inductive reactance is an opposition to current flow in ac circuits
Inductive reactance is an opposition to current flow in dc circuits
Inductive reactance is a force that tends to overcome the effects of counter emf
None of these
Inductive reactance is another term for counter emf

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit flows in two directions at the same time
The current in an ac circuit flows in one direction, but changes value periodically
None of these
The current in an ac circuit changes direction periodically
The current in an ac circuit flows in one direction at a steady level

ANSWER DOWNLOAD EXAMIANS APP