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PNPN - General Questions

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  • PNPN - General Questions
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PNPN - General Questions

1. 

How many layers of semiconductor materials does a silicon-controlled rectifier (SCR) have?

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

Answer: Option C

Explanation:

No answer description available for this question. 
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2. 

A thyristor is a ________-layer semiconductor material device.

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

Answer: Option C

Explanation:

No answer description available for this question. 
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3. 

Which of the following transistors is an SCR composed of?

A. npn, pnp
B. npn, npn
C. pnp, pnp
D. None of the above

Answer: Option A

Explanation:

No answer description available for this question.

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4. 

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

mcq17_01800

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

Answer: Option B

Explanation:

No answer description available for this question. 
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5. 

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:

No answer description available for this question.
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6. 

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

A. 5  mu (4) s to 30  mu (4) s
B. 1  mu (4) s to 5   mu (4) s
C. 0.1   mu (4) s to 1   mu (4) s
D. 0.01   mu (4) s to 0.1   mu (4) s

Answer: Option A

Explanation:

No answer description available for this question.
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7. 

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:

No answer description available for this question.

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8. 

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

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

Answer: Option C

Explanation:

No answer description available for this question. 
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