LV03 Electrical Systems Practice Paper

A colleague suffers an electric shock when using an electric drill. Your first action is?

• Pull the drill away from them

• Ring the emergency services

• Inform your supervisor

• Switch off the power supply

The unit of electrical power is the:

• Watt

• Amp

• Volt

• Coulomb

What would be the voltage of a cell in a fully charged battery?

• 12 Volts

• 2.1 Volts

• 2.2 Volts

• 14 Volts

A lamp with a poor earth connection will cause:

• The lamp to be brighter

• The bulb to blow

• The circuit fuse to blow

• The lamp to be dim

What is the maximum reading the meter can display with the switch in the selected position?

• 10 amps

• 20 volts AC

• 20 volts DC

• 12 volts DC

A car's battery has gone flat. To start the engine you should:

• Connect a spare battery to the car's alternator

• Connect a spare battery in series to the car's battery

• Connect a spare battery in parallel to the car's battery

• Connect a spare battery to the car's starter motor

What range would you expect to see from a fully charged battery?

• 10 - 11 Volts

• 12.6 - 13.2 Volts

• 14.4 - 16 Volts

• 9 - 15 Volts

An LED is a type of:

• Diode used in rectifiers

• Electronic Sensor

• Transistor that emits light

• Diode that emits light

A thermistor is a type of:

• Transistor that is temperature sensitive

• Diode that is temperature sensitive

• Sensor that is temperature sensitive

• Sensor that is pressure sensitive

What would be used to measure the specific gravity of a battery's electrolyte solution?

• Multimeter

• Voltmeter

• Hydrometer

• Drop Test