PNPN Devices – Exercise – 1

11. How many terminals does a Shockley diode have?

(a) 5
(b) 4
(c) 3
(d) 2

Answer
Answer : (d)
Explanation
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12. This symbol is an example of a(n) ________.

(a) SCR
(b) SCS
(c) GTO
(d) DIAC

Answer
Answer : (d)
Explanation
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13. How many terminals does a programmable unijunction transistor (PUT) have?

(a) 4
(b) 3
(c) 2
(d) 1

Answer
Answer : (b)
Explanation
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14. The two-layer semiconductor diode has led to ________layer devices.

(a) three-
(b) four-
(c) five-
(d) All of the above

Answer
Answer : (d)
Explanation
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15. SCRs have been designed to control powers as high as ________, with individual ratings as high as ________ at ________.

(a) 1800 MW, 10 A, 2000 V
(b) 1800 MW, 2000 A, 10 V
(c) 10 MW, 2000 A, 1800 V
(d) 2000 MW, 10 A, 1800 V

Answer
Answer : (c)
Explanation
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