Question

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 signal.
Statement (C): In the breakdown region, a zener diode behaves as a constant voltage source.

• A. A, B & C are all true
• B. A, B are true but C is false
• C. A, C are true but B is false
• D. B, C are true but A is false

Hint:

Remember: \[ \text{Ideal forward biased diode } \Rightarrow R=0 \] \[ \text{Half-wave rectifier } \Rightarrow \text{conduction during one half cycle only} \] \[ \text{Zener diode in breakdown region } \Rightarrow \text{approximately constant voltage} \] These are standard assumptions frequently used in electronic devices and circuits.

Answer 1

The Correct Option is A

Step 1: Evaluate each statement.
A: An ideal diode in forward bias has zero resistance (it acts as a closed switch). True. B: A half-wave rectifier passes current only during the half-cycle when the diode is forward biased. True. C: In the breakdown region, a Zener diode maintains a nearly constant voltage and is used as a voltage reference. True.

Step 2: Choose the correct combination.
All three statements are correct. \[ \boxed{A,\,B\text{ and }C\text{ are all true}} \]