Basic Electronics Knowledge Test

What is the output of an AND gate if both inputs are high?

• high

• off

• low

• medium

Which logic gate outputs true only when all inputs are true?

• OR gate

• AND gate

• XOR gate

• NOT gate

What color represents the number 2 in the resistor color code?

• blue

• green

• yellow

• red

In the resistor color code, what does the color red represent?

• 2

• 3

• 1

• 4

What is the function of a capacitor in a circuit?

• To amplify electrical signals.

• To convert AC to DC.

• To measure voltage in a circuit.

• The function of a capacitor in a circuit is to store and release electrical energy.

Name a common type of diode used in electronics.

• Zener diode

• Rectifier diode

• LED

• Photodiode

What is the primary function of a transistor?

• To act as a switch or amplifier in electronic circuits.

• To store electrical energy for later use.

• To increase the voltage of a power source.

• To convert AC to DC power.

Which logic gate is known as a universal gate?

• NAND gate

• AND gate

• OR gate

• XOR gate

What does a resistor do in an electrical circuit?

• A resistor increases the flow of electric current in an electrical circuit.

• A resistor converts electrical energy into mechanical energy in a circuit.

• A resistor limits the flow of electric current in an electrical circuit.

• A resistor stores electric energy for later use in a circuit.

How many bands are typically found on a standard resistor?

• 4 or 5

• 6 or 7

• 2 or 3

• 1 or 8