Exercise: Alternating Current Vs Direct Current

Questions for: Alternating Current Vs Direct Current

What is the peak value of a household appliance that uses a 230 V ac source?
A:
163 V
B:
230 V
C:
325 V
D:
480 V
Answer: C
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What voltage will an ac voltmeter display?
A:
rms
B:
average
C:
peak
D:
peak-to-peak
Answer: A
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If current varies periodically from zero to a maximum, back to zero, and then repeats, the signal is:
A:
direct
B:
alternating
C:
pulsating
D:
repetitive
Answer: C
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One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a signal amplitude value is called the:
A:
time/cm control
B:
position control
C:
intensity control
D:
volts/cm control
Answer: D
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The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's:
A:
amplitude
B:
frequency
C:
wavelength
D:
period
Answer: C
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