Discussion
Home ‣ Electronics ‣ Alternating Current vs Direct Current Comments
- Question
What term expresses the frequency of a rectangular wave?
Options- A. Hz
- B. period
- C. PRF
- D. PRT
- Correct Answer
- PRF
- 1. One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a waveform period is called a:
Options- A. focus control
- B. time/cm control
- C. intensity control
- D. volts/cm control Discuss
- 2. A triangle wave consists of repeating:
Options- A. positive ramps only
- B. negative ramps only
- C. positive and negative ramps of equal value
- D. positive and negative ramps of unequal value Discuss
- 3. If the frequency of a radio wave is increased, then its wavelength will:
Options- A. increase
- B. decrease
- C. remain the same
- D. cannot tell Discuss
- 4. What is the average value of a 12 V peak wave?
Options- A. 3.82 V
- B. 4.24 V
- C. 7.64 V
- D. 9.42 V Discuss
- 5. What is the name of a device that converts sound waves to electrical waves?
Options- A. an amplifier
- B. an antenna
- C. a filter
- D. a microphone Discuss
- 6. One adjustable knob on the oscilloscope that allows the trace to be aligned with a reference graticule is called the:
Options- A. position control
- B. focus control
- C. intensity control
- D. volts/cm control Discuss
- 7. What is the peak value of a household appliance that uses a 230 V ac source?
Options- A. 163 V
- B. 230 V
- C. 325 V
- D. 480 V Discuss
- 8. The magnitude that an alternation varies from zero is called its:
Options- A. altitude
- B. amplitude
- C. attitude
- D. polarity Discuss
- 9. What voltage will an ac voltmeter display?
Options- A. rms
- B. average
- C. peak
- D. peak-to-peak Discuss
- 10. The power that is distributed from a power plant to your home is:
Options- A. high voltage to high voltage
- B. low voltage to high voltage
- C. high voltage to low voltage
- D. low voltage to low voltage Discuss
Alternating Current vs Direct Current problems
Search Results
Correct Answer: time/cm control
Correct Answer: positive and negative ramps of equal value
Correct Answer: decrease
Correct Answer: 7.64 V
Correct Answer: a microphone
Correct Answer: position control
Correct Answer: 325 V
Correct Answer: amplitude
Correct Answer: rms
Correct Answer: high voltage to low voltage
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