Transformer Components Quiz

What are the three major sub-assemblies associated with a transformer that must be considered when a fault occurs?

• Magnetic circuit, Electrical circuit, Cooling systems

• Magnetic circuit, Electrical circuit, Insulation systems

• Electrical circuit, Cooling systems, Insulation systems

• Magnetic circuit, Insulation systems, Cooling systems

Which part of the transformer is associated with the magnetic circuit?

• Core

• Current carrying conductors

• Cooling systems

• Insulation

Which part of the transformer is associated with the electrical circuit?

• Core

• Cooling systems

• Current carrying conductors and devices

• Insulation

Which of the following is a part of the transformer that helps in maintaining its temperature?

• Core

• Current carrying conductors

• Cooling systems

• Insulation

What are the common problems that the transformer core is susceptible to during its service life?

• Insulation to ground failure at the clamp and crossbars

• Insulation failure between sections in a sectionalized core

• Insulation failure between the iron laminations

• All of the above

What is generally produced by insulation failures on transformer cores?

• Water

• Heat

• Electricity

• Light

What does the heat produced by insulation failures on transformer cores break down?

• Water

• Metal

• Oil

• Plastic

What is produced when the oil in a transformer breaks down due to heat?

• Water vapor

• Combustible gases

• Carbon dioxide

• Nitrogen

What device is installed to monitor and indicate the discharge of gases in a transformer?

• Thermostat

• Pressure gauge

• Buchholz Relay

• Voltmeter

What do Buchholz Relays monitor and indicate?

• Temperature changes

• Discharge of gases

• Voltage fluctuations

• Current overloads