26. 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
27. Which one of the SCR terminals fires the SCR?
(a) Anode
(b) Cathode
(c) Gate
(d) All of the above
28. What is the frequency range of application of SCRs?
(a) About 10 kHz
(b) About 50 kHz
(c) About 250 kHz
(d) About 1 mHz
29. How many layers of semiconductor materials does a silicon-controlled rectifier (SCR) have?
(a) 2
(b) 3
(c) 4
(d) 5
30. What is the maximum current (rms) rating for commercially available LASCRs today?
(a) 3 A
(b) 15 A
(c) 20 A
(d) 25 A
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