PNPN Devices – Exercise – 1

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

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

Answer
Answer : (b)
Explanation
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37. For an SCS, a ________ pulse at the anode gate turns the device on, while a ________ pulse will turn it off.

(a) negative, positive
(b)
(c)
(d)

Answer
Answer : (a)
Explanation
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38. Which of the following areas is (are) applications of an SCS?

(a) Counters
(b) Pulse generators
(c) Voltage sensors
(d) All of the above

Answer
Answer : (d)
Explanation
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39. 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
Answer : (d)
Explanation
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40. 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
Answer : (a)
Explanation
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