NEET Practice Questions (MCQs) with Answers & Solutions

The breakdown voltage of a diode can occur due to either avalanche effect or Zener effect. For breakdown voltages less than approximately 5V, the Zener effect is dominant, while for voltages above 5V, the avalanche effect is more significant. Since the breakdown voltage given here is exactly 5V, it can be due to either effect.

A NOR gate produces an output of 1 only when both inputs are 0. This is because the NOR gate is the negation of the OR gate, which means it will output 0 for any input combination that would produce 1 in an OR gate.

In VLSI (Very Large Scale Integration) circuits, more than 1000 gates are typically contained. VLSI technology allows the integration of a vast number of transistors on a single chip, which means the number of logic gates can easily exceed 1000.

A diode is a nonlinear device. This means that its current-voltage (I-V) relationship is not a straight line, which indicates that it does not follow Ohm's law across its entire operating range. Instead, a diode allows current to flow easily in one direction (forward bias) while offering high resistance in the opposite direction (reverse bias).

For a bridge rectifier, the peak load voltage ( V_{peak} ) is related to the RMS value of the secondary voltage ( V_{rms} ) by the formula: V_{peak} = V_{rms} imes rac{2}{ ext{sqrt}(2)} . Given that V_{peak} = 40V , we can rearrange this formula to find V_{rms} , which yields approximately 28.3V.

$ V_{rms } = { V_m \over \sqrt 2 } $