PNPN - General Questions (4)

Directions to Solve

PNPN - General Questions

25.

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 Â
D.	1 Â to 5 Â

Answer: Option A

Explanation:

No answer description available for this question.

26.

How many terminals does a Shockley diode have?

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

Answer: Option D

Explanation:

No answer description available for this question.

27.

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:

No answer description available for this question.

28.

What is the typical value of the reverse resistance of SCRs?

A.	1 to 10 Â
B.	100 Â to 1 k Â
C.	1 k Â to 50 k Â
D.	100 k Â or more

Answer: Option D

Explanation:

No answer description available for this question.

29.

How many terminals does a programmable unijunction transistor (PUT) have?

A.	4
B.	3
C.	2
D.	1

Answer: Option B

Explanation:

No answer description available for this question.

30.

Determine R_B1 for a silicon PUT if it is determined that h = 0.84, V_P = 11.2 V, and R_B2 = 5 k omega (6) .

A.	12.65 k
B.	16.25 k
C.	20.00 k
D.	26.25 k

Answer: Option D

Explanation:

No answer description available for this question.

31.

Which of the following devices has a negative-resistance region in its characteristics curve?

A.	SCR
B.	SCS
C.	Unijunction transistor
D.	Phototransistor

Answer: Option C

Explanation:

No answer description available for this question.

32.

Which of the following devices is unquestionably of the greatest interest today?

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

Answer: Option A

Explanation:

No answer description available for this question.

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