Electrical Safety and Hazardous Substances Quiz

Which Regulations are non-statutory?

• The Electricity at Work Regulations.

• Requirements for Electrical Installations BS 7671.

• Control of Substances Hazardous to Health (COSHH) Regulations.

• Control of Noise at Work Regulations.

Which substance may become a land pollutant if not contained safely?

• Mercury.

• Argon.

• Neon.

• Nitrogen.

Which type of fire extinguisher would have a red band?

• CO2

• Foam

• Water

• Powder

Who is responsible for organising construction work on a building site?

• Site Manager

• Clerk of Works

• Quality Inspector

• Principle Architect

What color sign would tell you a safety helmet must be worn on a construction site?

• Yellow and black

• Green and white

• Red and black

• Blue and white

What unit is equivalent to A x 10^-3?

• nA

• µA

• mA

• kA

What is the diameter of a conductor with a cross sectional area of 6 mm^2?

• 1.27 mm

• 1.38 mm

• 2.24 mm

• 2.76 mm

Which is the correct transposition of X_L = 2πfL ?

• f = X_L / 2πL

• f = 2πL / X_L

• f = L / 2πX_L

• f = πL / 2X_L

What is measured in m²?

• Area

• Length

• Width

• Volume

How many degrees does a generator rotor rotate per cycle?

• 45°

• 90°

• 180°

• 360°