31. SMPS normally use Ferrite core transformers in place of Iron core because of
32. Which of the following devices does not have negative resistance characteristics
33. Inverters find applications in
34. A diac has . . . . . . . . terminals
35. In controlled rectifiers, the nature of load current is continuous or discontinuous
36. The operating state that distinguishes a silicon controlled rectifier (SCR) from a diode is
37. For a type A chopper, DC source voltage is 240 V. Calculate the average output voltage is the duty cycle is 0.4. Take a voltage drop of 4 V across the chopper when it is on.
38. If firing angle in an SCR circuit is increased, the output . . . . . . . .
39. In a thyristor, the minimum current required to maintain the device in the 'ON' state is called
40. For a single phase fully controlled converter bridge operating with continuous load current, the converter will operate in inverting mode for triggering angle, $$\alpha $$, such that:
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