Transformer Maintenance Quiz

The winding that receives electrical power from the source.

The winding that delivers electrical power to the load.

A transformer with one primary and one secondary winding.

A transformer with three primary and three secondary windings.

A transformer with one winding acting as both primary and secondary.

Transformer windings arranged one over the other.

Winding connected to higher voltage side.

Provides high conductivity, expensive.

A method of connecting transformer windings in a triangular arrangement.

A method of connecting transformer windings in a star or Y shape.

A series of steps involved in creating a transformer, considering core material, windings, insulation, and cooling.

The current flowing in the primary winding of a transformer when it's energized but the secondary circuit is open.

The reactance of the magnetizing current in a transformer's core.

The magnetic core around which transformer windings are wrapped.

The transformer winding that receives the input voltage.

The transformer winding that delivers the output voltage.

The ratio of the number of turns in the primary winding to the number of turns in the secondary winding.

Details like voltage, current, frequency, and power rating needed for transformer design.

The ratio of primary winding turns to secondary winding turns (N₁/N₂).

The ratio of primary voltage (V₁) to secondary voltage (V₂) is equal to the turns ratio (N₁/N₂).

The ratio of primary current (I₁) to secondary current (I₂) is the inverse of the turns ratio (N₂/N₁).

Flux that doesn't link both windings in a transformer, causing leakage reactance.

Inductive effect caused by leakage flux; a series impedance in each winding.

The total impedance (resistance + reactance) seen by the source for primary/secondary side (Z₁ or Z₂).

Equation relating induced EMF (E₁) to frequency (f), turns (N₁), and maximum flux (Φm).

The ratio of induced EMFs (E₁/E₂) or primary/secondary voltage ratio (V₁/V₂), often denoted as 'k'.

A transformer with more secondary turns than primary, stepping up voltage.

A transformer with less secondary turns than primary, stepping down voltage.

High electromagnetic forces generated during a short circuit, stressing transformer components like insulation.

Mechanical stresses caused by temperature changes in a transformer's components due to heating and cooling.

Electrical currents flowing through transformer windings, creating magnetic fields and forces.

High electrical currents during faults (like short circuits) creating significant electromagnetic forces.

A common transformer cooling method where the transformer's core and windings are immersed in oil, which transfers heat.

Design considerations for the housing of the transformer core and windings - considering material, shape, and cooling.

Using materials like steel with good corrosion resistance for the transformer tank.

Different ways to keep transformers cool, like oil, air, or water.

A device in a transformer tank used for detecting faults.

Radiators, fans, and other features of the tank used for heat dissipation.

A compartment in a transformer tank that allows oil to expand and contract due to temperature changes, maintaining a consistent oil level and reducing oxidation.

A safety device that releases excess pressure inside a transformer tank to prevent damage in case of faults or abnormal conditions.

Determining the needed cooling tubes for a transformer based on its heat generation and required cooling capacity, selecting appropriate methods (oil or air cooling).

The total heat generated by a transformer during operation, including losses (core, copper, etc), requiring proper cooling.

Tests (pressure, vacuum, leaks) performed on transformer tanks to ensure their strength, reliability, and functionality.