Transformer Quiz

Hysteresis loss does not depend on which of the following?

• ambient temperature

• volume of the substance

• frequency

• maximum flux density

Which of the following works on the principle of electromagnetic induction?

• LED

• Transformer

• Combustion engine

• CFL lamp

_____ Static-Induced VVB. (Statically induced emf) is an example.

• Transformer

• Generator

• Alternator

• Motor

Which one of the windings does NOT belong to concentric windings of transformer?

• Cross-over

• Sandwich

• Helical

• Disc

Buchholz relay is a protection relay used in oil immersed transformers. Under what conditions does Buchholz Relay will NOT operate?

• Gas bubbles are formed inside the transformer due to faults.

• Level of transformer oil falls that leads to no movement of buffle plate

• Transformer oil flows rapidly from conservation tank to the main

• Level of transformer oil falls that leads to movement of baffle plate

Which of the following transformers are called Ferroresonant transformer regulator?

• Constant voltage transformer

• Variable voltage transformer

• Auto transformer

• Distribution transformer

To implement various cooling methods, the transformer type whose size is upto 25 kVA size is selected. What type of transformer is it?

• Spiral core Transformer

• Oil immersed

• Spiral Self-Cooled Transformer

• Dry Type Transformer

In a Transformer, if the secondary voltage is greater than primary voltage, then what type of transformer is this?

• Transformer on DC supply

• Step Down Transformer

• Ideal Transformer

• Step Up Transformer

______Gives an alarm when faults happen and is installed in oil immersed transformers.

When faults happen and is installed in oil immersed transformers?

• Hybrid Relay

• Buchholz Relay

• Latching Relay

• Non-Latching Relay