MSBTE I Scheme Practice MCQs of “Basic
Electronics (22225)”
UNIT-1. Diodes and Their Applications.
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1. |
What is a varistor? |
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Answer: Option A Explanation: No answer description available
for this question. |
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2. |
Which type of transformer is
required to create a 180 degree input to a rectifier? |
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Answer: Option A Explanation: No answer description available
for this question. |
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3. |
What circuit activity may shift
a characteristic curve so that diode operating points are different? |
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Answer: Option A Explanation: No answer description available
for this question. |
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4. |
What is wrong with this diode? |
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Answer: Option C Explanation: No answer description available
for this question. |
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5. |
The dc current through each
diode in a bridge rectifier equals: |
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Answer: Option A Explanation: No answer description available
for this question. |
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6. |
When matching polarity
connections have been made and the potential difference (PD) is above 0.7 V,
the diode is considered to be: |
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Answer: Option B Explanation: No answer description available
for this question. |
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7. |
In a power supply diagram,
which block indicates a smooth dc output? |
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Answer: Option D Explanation: No answer description available
for this question. |
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8. |
If a 169.7 V half-wave peak has
an average voltage of 54 V, what is the average of two full-wave peaks? |
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Answer: Option B Explanation: No answer description available
for this question. |
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9. |
What is the current through the
LED? |
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Answer: Option D Explanation: No answer description available
for this question. |
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10. |
The characteristic curve for
the complex model of a silicon diode shows that |
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Answer: Option C Explanation: No answer description available
for this question. |
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11. |
Since diodes are destroyed by
excessive current, circuits must have: |
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Answer: Option B Explanation: No answer description available
for this question. |
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12. |
A diode for which you can
change the reverse bias, and thus vary the capacitance is called a |
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Answer: Option A Explanation: No answer description available
for this question. |
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13. |
A filtered full-wave rectifier
voltage has a smaller ripple than does a half-wave rectifier voltage for the
same load resistance and capacitor values because: |
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Answer: Option A Explanation: No answer description available
for this question. |
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14. |
Testing a good diode with an
ohmmeter should indicate |
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Answer: Option C Explanation: No answer description available
for this question. |
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15. |
The peak inverse voltage (PIV)
across a nonconducting diode in a bridge rectifier equals approximately: |
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Answer: Option C Explanation: No answer description available for this question. |
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16. |
What is the current through the
diode? |
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Answer: Option A Explanation: No answer description available
for this question. |
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17. |
Electrons in the outermost
orbit or shell of an atom are called |
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Answer: Option C Explanation: No answer description available
for this question. |
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18. |
Shunting the ac component away
from the load is the task of a: |
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Answer: Option B Explanation: No answer description available
for this question. |
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19. |
A pn junction
allows current flow when |
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Answer: Option A Explanation: No answer description available
for this question. |
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20. |
What is the current through the zener diode? |
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Answer: Option B Explanation: No answer description available for this question. |
