9 - INTRODUCTION TO AC CIRCUITS Flashcards
Many forms of __________________ are found in nature.
ELECTRICAL SIGNALS
________________ concerns only signals used in ________________ and _________________.
ELECTRICAL SIGNALS, POWER GENERATION, UTILIZATION
__________________ a very important form of energy.
ELECTRICITY
[TRUE OR FALSE] Huge amount of electricity must be generated and utilized.
TRUE
[TRUE OR FALSE] Huge amount of electricity must not be generated and utilized.
FALSE
____________ convert mechanical energy to electrical energy.
GENERATORS
Generators convert _______________ energy to _____________ energy.
MECHANICAL , ELECTRICAL
_____________ produced by electromagnets are cut by conductors to produce electricity.
MAGNETIC LINES OF FLUX
Magnetic lines of flux produced by____________ are cut by conductors to produce electricity.
ELECTROMAGNETS
A ______________ waveform is produced.
SINUSOIDAL ALTERNATING CURRENT
3 CATEGORIES OF ELECTRICAL SIGNALS
- CONSTANT OR DIRECT CURRENT (DC)
- PERIODIC
- ALTERNATING CURRENT (AC)
______________ are those circuits excited by constant or time-invariant sources.
DC CIRCUITS
____________ main means of providing electric power up until the late 1800s.
DC SOURCES
____________ a signal that has the form of the sine or cosine function.
SINUSOID
SINUSOID usually referred to as __________.
ALTERNATING CURRENT (AC)
A _______________ reverses at regular time intervals and has alternately _________ and ___________ values.
CURRENT, POSITIVE, NEGATIVE
A Current _________ at regular time intervals and has alternately Positive and Negative values.
REVERSES
A Current reverses at ___________ time intervals and has alternately Positive and Negative values.
REGULAR
____________ circuits driven by sinusoidal current or voltage sources.
AC circuits
