Transformers

What is the purpose of using a higher flux density in a transformer?

The temperature rise in a transformer is directly proportional to which of the following?

In general, what is the most important point to monitor during the operation of a transformer?

What is the percentage equivalent of the no load current in comparison to the full load current of a transformer?

Which of the following will happen when a transformer is plugged into a DC circuit?

Which of the following tests is used to determine the relative polarity of the windings of a transformer?

When a closed A bank is converted into an open A bank, each of the two remaining transformers supplies what percent of the original load?

Two transformers when operating in parallel will share the load depending on which of the following?

At what power factor does the transformer operates?

What is the purpose of the open circuit test in a transformer?

Transformer actions require which of the following fluxes?

What is being increased in a step up transformer?

What is the resistance of the low voltage winding in comparison to the high voltage winding in a transformer?

When a transformer winding suffers a short circuit, what type of force will be experienced by the adjoining turns of the same winding?

Instrument transformers are used on AC circuits for extending the range of which of the following instruments?

The eddy current loss in a transformer varies ____ the supply voltage.

What will happen to the transformer if the primary is connected to a dc supply?

Which part of the transformer is most subjected to damage due to overheating?

What is a conservator in a transformer?

In a transformer, at every instant the direction of the secondary current must be such as to oppose any change in flux. This is based on which of the following principles?