31. An SCR has …………….. pn junctions
32. An SCR has ………….. semiconductor layers
33. We can control a.c. power in a load by connecting …………
34. AC power in a load can be controlled by connecting
35. An SCR behaves as a ……………. switch
36. An SCR is a ……………….. triggered device
37. An SCR is a ...... triggered device
38. When an SCR is turned on, the voltage across it is about ……….
39. When an SCR is turned on, the voltage across it is about ..........
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