Electrical Basics Quiz

What is the unit of electrical power?

• Volt

• Ohm

• Watt

• Ampere

What does LED stand for?

• Light Energy Detector

• Low Energy Device

• Laser Emission Device

• Light Emitting Diode

What is a potentiometer used for?

• Measuring voltage

• Adjusting resistance

• Generating current

• Storing energy

What type of current do vehicles use?

• Static Current

• Dynamic Current

• Direct Current

• Alternating Current

What happens to the bulbs in a parallel circuit if one blows?

• Voltage increases

• Circuit breaks

• Remaining bulbs stay lit

• All bulbs go out

What is the purpose of a relay?

• To store energy

• To amplify sound

• To switch circuits

• To measure temperature

What is the optimum charging voltage on a 12v system?

• 14 volts

• 12 volts

• 10 volts

• 16 volts

What tool is used to measure the electrolyte S.G?

• Ammeter

• Hydrometer

• Voltmeter

• Thermometer

What can happen if too large a fuse is used in a circuit?

• Circuit will be slower

• Circuit will be faster

• Circuit may overheat

• Circuit will be safe

What should you do first if your colleague receives an electric shock?

• Call for help

• Give water

• Turn off the power

• Move the person