Electronic Principles - Section 3 Multiple Questions and Answers.
Exercise Questions ::
Electronic Principles
| 1. | Which one of the following statements is true for the voltages in a series RL circuit? |
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| A. | The total voltages is equal to the sum of the voltages across the resistance and inductance |
| B. | The voltage always has the same amplitude and phase for every part of the circuit |
| C. | The total voltage is less than the sum of the voltages across the resistance and inductance |
| D. | The total voltage lags the total current by less than 90 |
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Published by:Michael Daani
| 2. | The core of an electromagnet is said to be in saturation when: |
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| A. | the core is permitted to move freely within the coil |
| B. | an increase in current through the coil causes no further increase in the mmf |
| C. | frequent changes in the direction of current through the coil causes heating effects in the core material |
| D. | changing the polarity of the current in the coil changes the polarity of the magnetic field around the core |
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Published by:Michael Daani
Published by:Michael Daani
| 4. | Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91? |
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| A. | 200 W |
| B. | 1000 W |
| C. | 20 W |
| D. | 100 W |
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Published by:Michael Daani
| 5. | Doubling the diameter of the coil in an inductor: |
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| A. | multiplies the value of inductance by two |
| B. | reduces the value of inductance by one-half |
| C. | reduces the value of inductance by one-fourth |
| D. | multiplies the value of inductance by four |
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Published by:Michael Daani
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