10 Questions
Explain the concept of ripple factor in rectification circuits.
The ripple factor is a measure of the effectiveness of a rectifier circuit in smoothing out the AC ripples from the rectified output.
Describe the advantages and disadvantages of a choke input filter.
Advantages: better filtering efficiency, lower ripple. Disadvantages: higher cost, larger size.
Explain how to design an unregulated DC power supply step by step.
Step 1: Determine the required output voltage and current. Step 2: Choose a transformer with appropriate secondary voltage. Step 3: Select rectifier and filter components. Step 4: Calculate the ripple factor and choose appropriate filter type.
Differentiate between biased and unbiased clipper/limiter circuits.
Biased circuits use a DC bias voltage to clip or limit the AC signal. Unbiased circuits do not require a bias voltage.
Define the Static resistance in a diode.
Static resistance is the resistance offered by a diode when it is forward biased.
What is an Unbiased Diode?
An Unbiased Diode is a diode that is not connected to any external circuit and has no voltage applied to it.
Explain the Depletion Layer.
The Depletion Layer is a region around the PN junction where there are no free charge carriers due to the diffusion of majority carriers.
What is Barrier Potential?
Barrier Potential is the potential difference that exists across the PN junction when the diode is in thermal equilibrium.
Differentiate between Avalanche and Zener breakdown.
Avalanche breakdown occurs due to collision of charge carriers under high reverse bias, while Zener breakdown occurs in heavily doped diodes due to quantum tunneling.
Explain the V-I characteristic of a PN junction.
The V-I characteristic of a PN junction shows that the diode conducts current only in one direction (forward biased) and blocks current in the opposite direction (reverse biased).
This quiz contains questions related to basic concepts in electronics, such as unbiased diode, depletion layer, barrier potential, avalanche breakdown, Zener breakdown, conductors, insulators, semiconductors, and V-I characteristic of a PN junction.
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