AP EAMCET20227 Jul 2022Morning ShiftPhysicsSemiconductorsActual
Consider the following statements Statement (A) The resistance of an ideal diode in forward biased condition is zero. Statement (B) In a half wave rectifier, the load current flows only for every half cycle of the input signals. Statement (C) In the breakdown region, a zener diode behaves as a constant voltage source.
Options
- AA, B and C are all true.
- BA, B true but C is false.
- CA, C true but B is false.
- DB, C true but A is false.
Correct answer
A. A, B and C are all true.
Step-by-step solution
In an ideal diode V-I graph in forward bias is So, forward resistance, V I =0 In a half wave rectifier diode resists negative half of input cycle. Hence, current only flows for positive half cycle. When breakdown occurs, potential drop across zenner diode becomes constant. Hence, it acts as a constant voltage source. Hence, all statements are correct.