Electronics - Diodes and Applications

Exercise :: Diodes and Applications - General Questions

21. 

When a diode is forward biased, the voltage across it

A. is directly proportional to the current
B. is inversely proportional to the current
C. is directly proportional to the source voltage
D. remains approximately the same

Answer: Option D

Explanation:

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22. 

Why is heat produced in a diode?

A. due to current passing through the diode
B. due to voltage across the diode
C. due to the power rating of the diode
D. due to the PN junction of the diode

Answer: Option A

Explanation:

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23. 

The arrow in the schematic symbol of a diode points to

A. the n-type material, which is called the anode
B. the n-type material, which is called the cathode
C. the p-type material, which is called the anode
D. the p-type material, which is called the cathode

Answer: Option C

Explanation:

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24. 

The diode schematic arrow points to the:

A. trivalent-doped material
B. positive axial lead
C. anode lead
D. cathode lead

Answer: Option D

Explanation:

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25. 

When checking a diode, low resistance readings both ways indicate the diode is:

A. open
B. satisfactory
C. faulty
D. not the problem

Answer: Option C

Explanation:

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