Zener diode acts as a

• rectifier

• voltage regulator

• potentiometer

• galvanometer

Identify the electronic symbol.

• Diode

• Photodiode

• Reflective diode

• Light Emitting Diode

Current is measured in:

• Ohms
• Voltage
• Amperes
• Watts

What electronic component allows current to flow in one direction only?

• Resistor

• LED

• Diode

• Switch

What is the tolerance for a Green, Red, Black, Gold resistor?

• 1%
• 20%
• 5%
• 10%

Which of the following is the correct transistor circuit symbol?

• 
• 
• 
• 

Doping is a process of adding a certain amount of specific impurities to semiconductor. What is the purpose of doping?

• To increase the resistance of semiconductor

• To increase the thermal energy of semiconductor

• To increase the temperature of the semiconductor

• To increase the conductivity of the semiconductor

What is the function of a diode?

• Acts as a current amplifier

• Acts as an automatic switch

• Stores electric charge

• Allows the current to pass in one direction only

What is this?

• Television

• Pot?

• LDR

• Resistor?

what is an oscillator?

• an amplifier

• a power supply

• a multimeter

• a signal generator