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Intro to Transformers questions with actual answers 2025

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Intro to Transformers questions with actual answers 2025

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Intro to Transformers questions with
actual answers 2025.




A __________ is an electrical device that converts AC electricity from one voltage level
to another. - ANSWER: Transformer

A common application of mutual inductance is found in a device called a __________. -
ANSWER: Transformer

Which of the following is not a component of a transformer? - ANSWER: Plate

In order to calculate the output voltage of a transformer, divide the input voltage by the
__________. - ANSWER: Turns Ratio

Which of the following is a method to troubleshoot a transformer? - ANSWER:
Measuring the continuity of the coils

Transformers are usually rated in units called __________. - ANSWER: Volt Amperes

The power relationship on a transformer states that __________. - ANSWER: Power
in= Power out + loss

The current load of a transformer is the current drawn by the __________. - ANSWER:
Primary winding itself

Which of the categories of transformers uses only one coil for the primary and
secondary? - ANSWER: Autotransformer

Which type of transformer is commonly used to reduce line voltages of 240 VAC or 480
VAC to 120 VAC? - ANSWER: Control transformer

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