Electronics - Diodes and Applications

Exercise :: Diodes and Applications - General Questions

6. 

When matching polarity connections have been made and the potential difference (PD) is above 0.7 V, the diode is considered to be:

A. not working
B. forward biased
C. reverse biased
D. an open switch

Answer: Option B

Explanation:

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7. 

In a power supply diagram, which block indicates a smooth dc output?

A. transformer
B. filter
C. rectifier
D. regulator

Answer: Option D

Explanation:

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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?

A. 119.9 V
B. 108.0 V
C. 115.7 V
D. 339.4 V

Answer: Option B

Explanation:

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9. 

What is the current through the LED?

A. 0 mA
B. 23 mA
C. 18 mA
D. 13 mA

Answer: Option D

Explanation:

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10. 

The characteristic curve for the complex model of a silicon diode shows that

A. the barrier potential is 0 V
B. the barrier potential stays fixed at 0.7 V
C. the barrier potential increases slightly with an increase in current
D. the barrier potential decreases slightly with an increase in current

Answer: Option C

Explanation:

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