F5 Chapter 5.2 Semiconductor Diode

What are the majority carries in a p-type semiconductor?

• Free electron

• Holes

• Positive ions

• Negative ions

Which of the following is true about an n-type semiconductor?

• It has a higher resistance.

• Antimony or arsenic is use in the doping

• Holes are the majority carries

• Free electrons are the minority carries

Which of the following is a semiconductor material used in the electronic industry?

• Lithium

• Magnesium

• Copper

• Silicon

What is the function of diode?

• Current amplifier

• Automatic switch

• Sensor

• Valve

When the switch is closed, Which bulb will light up?

• R only

• P and Q only

• P and R only

• Q and R only

Diagram shows a circuit where the bulb does not light up. Which of the following step below will make the bulb light up?

• Inserting a fuse in the circuit

• Reversing the battery connection

• Changing the power supply to a 3V battery

• Reversing the bulb connection

What is the function of the capacitor in the circuit?

• as a current smoother

• as an automatic switch

• as a current amplifier

• as a voltage divider

Which of the following circuits is correct for full-wave rectification?

• 
• 
• 
• 

Minimum number of diode needed in half-wave rectification is

• 1

• 2

• 3

• 4

Function of the capacitor is

• produce more current

• reduce power lost

• current smoother

• rectifier the current