Understanding Diodes and Rectification

What is the primary function of a diode in an electrical circuit?

• To amplify signals

• To allow current to flow in one direction only

• To store electrical energy

• To convert AC to DC

In a half-wave rectifier circuit, what role does the diode play?

• It blocks the entire AC signal

• It allows both halves of the AC signal to pass

• It allows only one half of the AC signal to pass

• It converts DC to AC

What is forward bias in a diode?

• When the diode is connected in reverse and blocks current

• When the diode is connected in such a way that it allows current to flow

• When the diode is not connected to any circuit

• When the diode is used to amplify signals

What is reverse bias in a diode?

• When the diode is connected in such a way that it allows current to flow

• When the diode is connected in reverse and blocks current

• When the diode is used to amplify signals

• When the diode is not connected to any circuit

What happens to the current in a diode when it is reverse biased?

• The current increases significantly

• The current remains constant

• The current is blocked

• The current decreases slightly

What is the typical forward voltage drop across a silicon diode?

• 0.1 V

• 0.3 V

• 0.7 V

• 1.2 V

What is the reverse breakdown voltage of a typical silicon diode?

• 0.7 V

• 5 V

• 50 V

• 100 V

Which of the following is a characteristic of a diode in forward bias?

• High resistance

• Low resistance

• No resistance

• Infinite resistance

In a half-wave rectifier, what is the frequency of the output signal if the input AC signal has a frequency of 50 Hz?

• 25 Hz

• 50 Hz

• 100 Hz

• 200 Hz

What is the main disadvantage of using a half-wave rectifier?

• It requires a large number of components

• It is inefficient and produces a high ripple factor

• It is expensive to build

• It cannot convert AC to DC