Alternating Current vs Direct Current Questions and Answers

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Showing 10 of 17 questions
Q11
A test equipment item that has the ability to produce either square, triangular, or sawtooth waveforms is called:
  • A a function generator
  • B a radio frequency generator
  • C an audio frequency generator
  • D a frequency meter or counter
Answer: Option A
Q12
What does the CRT oscilloscope display?
  • A voltage and period
  • B current and frequency
  • C rms voltage and current
  • D frequency and voltage
Answer: Option A
Q13
Power companies supply ac, not dc, because:
  • A it is easier to transmit ac
  • B there is no longer a need for dc
  • C dc is more dangerous
  • D there are not enough batteries
Answer: Option A
Q14
If a waveform period is determined to be 10 microseconds in duration, what is the frequency of the signal?
  • A 100 Hz
  • B 1000 Hz
  • C 10 kHz
  • D 100 kHz
Answer: Option D
Q15
The phase difference between sine waves of different frequencies is:
  • A equal to their frequency differences
  • B the difference in their fixed time displacement
  • C the same throughout time
  • D constantly changing
Answer: Option B
Q16
If a sine wave signal is 100 mV peak-to-peak, how many volts would be measured by a voltmeter?
  • A 14.14 mV
  • B 35.4 mV
  • C 63.7 mV
  • D 70.7 mV
Answer: Option B
Q17
What term expresses the frequency of a rectangular wave?
  • A Hz
  • B period
  • C PRF
  • D PRT
Answer: Option C

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