Electronic Principles - Section 2 Multiple Questions and Answers.
Exercise Questions ::
Electronic Principles
| 1. | Which one of the following statements most accurately applies to the frequency of a waveform? |
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| A. | The actual frequency of a sine waveform is 1.41 times the working frequency |
| B. | Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz |
| C. | The higher the amplitude of a waveform, the higher its frequency |
| D. | The longer the period of a waveform, the lower its frequency |
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Published by:Michael Daani
Published by:Michael Daani
| 3. | One henry of inductance is defined as: |
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| A. | the amount of counter emf required to reduce a current to 1 A |
| B. | the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second |
| C. | the amount of inductance required to change the frequency of a current by 1 Hz |
| D. | the number of turns of wire in an inductor multiplied by the amount of current flowing through it |
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Published by:Michael Daani
Published by:Michael Daani
| 5. | Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? |
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| A. | The voltage remains at one polarity and at a steady level |
| B. | The voltage remains at one polarity but changes value periodically |
| C. | The voltage causes current to flow in two directions at the same time |
| D. | The voltage reverses polarity periodically |
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Published by:Michael Daani
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