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Electronic Devices - PNPN

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Exercise :: PNPN - General Questions

6. 

How many terminals does a programmable unijunction transistor (PUT) have?
A. 4
B. 3
C. 2
D. 1

Answer: Option B

Explanation:

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7. 

What is the typical value of the reverse resistance of SCRs?
A. 1 to 10
B. 100 to 1 k
C. 1 k to 50 k
D. 100 k or more

Answer: Option D

Explanation:

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8. 

The ISO-LIT Q1 16-pin Litronix opto-isolator DIP contains ________ opto-isolators.
A. 4
B. 8
C. 12
D. 6

Answer: Option A

Explanation:

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9. 

How many terminals does a Shockley diode have?
A. 5
B. 4
C. 3
D. 2

Answer: Option D

Explanation:

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10. 

What is the range of the variable resistor in the equivalent circuit of a unijunction transistor?
A. 50 to 5 k
B. 6 k to 10 k
C. 5 to 50
D. 1 to 5

Answer: Option A

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