Electronic Devices - PNPN

Exercise :: PNPN - General Questions

26. 

This symbol is an example of a(n) ________.

A. SCR
B. SCS
C. GTO
D. DIAC

Answer: Option D

Explanation:

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27. 

How many terminals does a silicon-controlled switch (SCS) device have?

A. 2
B. 3
C. 4
D. 5

Answer: Option C

Explanation:

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28. 

What is the typical value of the triggering anode gate for SCS devices?

A. 1.5 mA
B. 150 A
C. 15 A
D. 1 A

Answer: Option A

Explanation:

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29. 

What is the typical range of turn-off times for SCRs?

A. 5 s to 30 s
B. 1 s to 5 s
C. 0.1 s to 1 s
D. 0.01 s to 0.1 s

Answer: Option A

Explanation:

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30. 

Which of the following is (are) the advantages of the SCS over a corresponding SCR?

A. Reduced turn-off time
B. Increased control and triggering sensitivity
C. More predictable firing situation
D. All of the above

Answer: Option D

Explanation:

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