GRADE 1 PHYSICS QUIZ

What is the name of the unit that measures power in an amplifier?

• volt

• ampere

• ohm

• watt

What type of current do power amplifiers use?

• Direct current (DC)

• Wind energy

• Solar power

• Alternating current (AC)

What is the purpose of a DC/DC converter?

• To convert digital signals to analog signals

• To convert mechanical energy to electrical energy

• To convert one voltage level of DC to another voltage level of DC

• To convert AC to DC

Can you name one example of a DC/DC converter?

• Step-up converter

• Buck-boost converter

• Flyback converter

• Transformer

What does a power amplifier do?

• Divides the input signal

• Inverts the input signal

• Reduces the input signal

• Amplifies the input signal

What is the main difference between AC and DC power?

• Type of outlet used

• Color of the wires

• Direction of the flow of electric charge

• Size of the power source

What is the main function of a power amplifier?

• To decrease the frequency of the input signal

• To divide the input signal

• To increase the amplitude of the input signal

• To filter out the input signal

What is the main function of a DC/DC converter?

• Regulate temperature

• Generate electricity

• Convert voltage levels

• Filter air

What are the two types of power amplifiers?

• Input and output

• Analog and digital

• Positive and negative

• Left and right

Can you name one application of a DC/DC converter?

• Portable electronic devices

• Cooking appliances

• Pet grooming tools

• Automobile tires