Zener Diode

The video tutorial covers various semiconductor devices, starting with the Zener diode, which acts as a voltage regulator in circuits. It explains the diode's operation in reverse bias and its role in maintaining constant voltage. The tutorial then shifts to light-emitting diodes (LEDs), highlighting their efficiency and applications. Optoelectronic devices like photodiodes are discussed, focusing on their use in detecting optical signals. Finally, the video explores solar cells, detailing their photovoltaic principle and effectiveness in energy conversion.

What is the primary function of a Zener diode in a circuit?

• To store energy

• To convert AC to DC

• To regulate voltage

• To amplify signals

In which configuration is a Zener diode typically used?

• Parallel with a resistor

• Reverse biased

• Series with a capacitor

• Forward biased

What happens to the voltage across a Zener diode when the input voltage changes?

• It increases

• It decreases

• It remains constant

• It fluctuates randomly

What is a key advantage of using LEDs in electronic devices?

• High power consumption

• Slow switching

• Monochromatic light emission

• Short shelf life

How does a photodiode generate current?

• By reflecting light

• By absorbing sound waves

• By emitting light

• By absorbing photons

What principle do solar cells operate on?

• Piezoelectric effect

• Photovoltaic effect

• Thermoelectric effect

• Electromagnetic induction

Which factor is crucial for the efficiency of solar cells?

• Shape of the cell

• Band gap of the semiconductor

• Color of the coating

• Thickness of the metal grid