CREATIVE TECH 8 CLASS REVIEW

You are assigned to measure the resistance of a component. Which symbol will you look for on the multimeter dial?

• V

• A

• Ω

• mA

Which unit is used to measure electric current?

• Volt

• Ohm

• Watt

• Ampere

Which of the following can be measured using a multimeter?

• Temperature

• Voltage, Current, and Resistance

• Frequency and Capacitance only

• Power and Light Intensity

If the multimeter reads 0 volts across a battery, what is most likely true?

• The battery is new

• The battery is empty or dead

• The probes are reversed

• The circuit is overloaded

A teacher asks you to measure the resistance of a heating element while it is operating. What safety precaution should you take?

• Hold both probes tightly with wet hands

• Turn off the power before measuring

• Increase the voltage supply

• Change the battery of the multimeter

A student measures the resistance of a wire at two different temperatures. At higher temperature, the resistance increases. What conclusion can be made?

• The material is a good insulator

• The wire expands and breaks

• The wire is made of a metal whose resistance rises with heat

• The multimeter is inaccurate

Which component converts AC to DC?

• Transformer

• Rectifier

• Capacitor

• Regulator

Which of the following tools allows you to test circuits without soldering?

• Transformer

• Breadboard

• Rectifier

• Capacitor

A bridge rectifier uses how many diodes?

• 1

• 2

• 3

• 4

What is the function of a capacitor in a power supply circuit?

• Increase voltage

• Smooth out DC ripples

• Convert DC to AC

• Step down voltage