SCIENCE PHASE 2 TEST 2

A domestic AC supply is provided by which of the following?

• Power stations

• Battery

• Photo voltaic cell

• Alternator

The term "DC" stands for which one of the following when referring to an electrical supply?

• Direct Current

• Display Current

• Design Current

• Diverter Current

Which of the following is used to calculate a cartridge fuse rating?

• Amps = Watts x Volts

• Volts = Watts - Amps

• Amps = Volts - Watts

• Amps = Watts / Volts

Which one of the following is the unit of measurement for electrical power?

• Ohm

• Watt

• Volt

• Amp

Which one of the following is the unit of measurement for electrical current?

• Ohm

• Watt

• Volt

• Amp

The term "AC" stands for which one of the following when referring to an electrical supply?

• Amplified current

• Ampere current

• Alternating current

• Associated current

Which one of the following identifies a common means of providing DC supply?

• Batteries

• Alternator

• Power station

• Static Inverter

Which one of the following gases has a calorific value of approximately 39MJ/m3?

• Natural gas

• Acetylene

• Propane

• Butane

Which one of the following gases has the highest combustion temperature?

• Natural gas

• Nitrogen

• Propane

• Carbon Monoxide

Which one of the following is required for combustion to occur? A supply of oxygen, a source of ignition, plus

• A fuel supply

• A source of light

• A supply of air

• Adequate ventilation