Electronics (10 Questions)

What logic gate produces a HIGH output only when all inputs are LOW?

• AND

• OR

• NOR

• NAND

Which semiconductor component is primarily used for signal amplification?

• Diode

• Transistor

• Resistor

• Capacitor

What is the function of an analog-to-digital converter (ADC)?

• Converting binary signals to voltage levels

• Converting voltage levels to binary representation

• Amplifying analog signals

• Filtering digital noise

In digital electronics, what does PWM stand for?

• Power Width Module

• Pulse Width Modulation

• Periodic Wave Measurement

• Precision Wave Monitor

What would be the output of the following logic expression: (1 AND 0) OR (1 AND 1)?

• 0

• 1

• Undefined

• Alternating between 0 and 1

What type of memory retains its contents even when power is removed?

• RAM

• ROM

• Cache

• Virtual memory

Which component would you use to convert AC voltage to DC voltage in a power supply?

• Capacitor

• Resistor

• Rectifier

• Transformer

What is the purpose of a pull-up resistor in digital electronics?

• To ensure a high logic level when the input is floating

• To limit current through an LED

• To increase voltage to a motor

• To reduce signal noise

What is the proper way to measure voltage across a component in a circuit?

• Connect voltmeter in series with the component

• Connect voltmeter in parallel with the component

• Connect voltmeter to ground only

• Connect voltmeter in series with ground

Which of the following microcontroller features is most important for real-time control applications?

• Large memory capacity

• Low power consumption

• Fast clock speed

• Multiple serial communication interfaces