QUIZ 1 Flashcards
A wave in which the voltage rises at a constant rate with respect to time is a ——-.
linear wave
The most common of all AC waveforms is the —–wave.
sine wave
Rotating machines normally produce a waveform called a —-wave.
sine wave
Each complete waveform of 360 Degrees is called a —-.
cycle
The number of cycle completed in one second is called a
frequency
The number of frequency is —-
hertz
The maximum point of a waveform is called the —–
peak
The amplitude of a waveform is measured from
zero to the highest valve obtained in either direction
what is the peak voltage of a 277V RMS AC voltage?
391.68V
What is the RMS valve of an AC voltage that has a 480V peak?
339.46V
—– is the square root of the mean of the square of the instantaneous current
RMS
A term used to indicate the same value as the RMS value is the —- value.
effective value
If an AC waveform is rectified and converted into DC,the voltage valve that results is the —- value.
average
When AC voltage is rectified and converted into DC, the resulting waveform is normally not pure, flat DC. the pulses is called?
ripples
What is the average voltage of a full-wave rectified 240V AC voltage?
216.17V
In a DC circuit, the product of volts times the amperes is called —-power
true power
The unit of measure of the power delivered to the load in a DC circuit is
watts
A(n)—- load contains pure resistance.
resistive load
When current rise and falls at the same rate as the voltage and reverses the direction of flow when the voltage reverses polarity,the current is said to be—- with the voltage.
in phase
The —-effect occures when AC induces eddy currents into the conductor, with cause the electrons to be repelled toward the outer surface of the conductor.
skin effect
To help over come the problem with skin effect in high-frequency circuits, conductors with a large amount of —— must be used.
wire serface
Square waves are generally produced by electronic devices called
oscillator
