Transformer Quiz

What is the primary function of a transformer?

• To convert AC to DC

• To increase resistance in a circuit

• To transform an alternating voltage at one level to another level

• To store electrical energy

What are the three main components of a transformer?

• Core, primary coil, secondary coil

• Capacitor, inductor, resistor

• Generator, transformer, load

• Battery, switch, load

What happens when a transformer suffers a breakdown?

• It continues to operate normally

• It can explode due to electrical overload

• It converts to a DC transformer

• It increases its efficiency

What is the efficiency of large power transformers?

• Less than 70%

• Exactly 100%

• Up to 99.75%

• Around 50%

What is the term for energy lost due to the resistance of the windings in a transformer?

• Mechanical loss

• Copper loss

• Hysteresis loss

• Eddy loss

What is the purpose of the cooling system in large transformers?

• To convert AC to DC

• To store energy

• To remove heat caused by losses

• To increase voltage

What is the relationship between the number of turns in the primary and secondary coils of a transformer?

• They have no effect on the transformer

• They determine the voltage ratio

• They are inversely proportional

• They are always equal

What is the formula for the voltage ratio in an ideal transformer?

• E₁ + E₂ = N₁ - N₂

• E₁ / E₂ = N₁ / N₂

• E₁ - E₂ = N₁ * N₂

• E₁ * E₂ = N₁ + N₂

What type of transformer is used to lower voltage?

• Auto transformer

• Isolation transformer

• Step-down transformer

• Step-up transformer

What is the effect of eddy currents in a transformer?

• They reduce voltage

• They store energy

• They cause resistive heating

• They increase efficiency