Question

15: If the applied voltage to a certain transformer is increased by 50% and the
frequency is reduced to 50% (assuming that the magnetic circuit remains
unsaturated), the maximum core flux density will
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change to three times the original value
change to 1.5 times the original value
change to 0.5 times the original value
remain the same as the original value​

Answer 1

Answer:

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Explanation:

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Answer 2

The maximum core flux density will change to three times the original value.

Option (a) is correct.

Explanation:

• A transformer is an electrical device that is used to transfer electric current between two points.
• The transfer of current between two circuits takes place by the process of electromagnetic induction.
• There are two types of transformers.
• Step-up transformer
• Step-down transformer
• The voltage increases in the step-up transformer and the voltage level decreases in the step-down transformer between two circuits.