Question:
The device used for changing voltage from one value to another value without change in frequency is known as
The device used for changing voltage from one value to another value without change in frequency is known as
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A transformer changes AC voltage level but does not change frequency.
Updated On: May 7, 2026
- Starter
- Transformer
- Dynamo
- Alternator
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The Correct Option is B
Solution and Explanation
Concept:
A transformer is an electrical device used to change the voltage level of alternating current.
Step 1: A transformer works on the principle of mutual induction.
Step 2: It can step up or step down AC voltage.
Step 3: A step-up transformer increases voltage, while a step-down transformer decreases voltage.
Step 4: During this process, the frequency of AC supply remains unchanged.
Step 5: Therefore, the device is called a transformer. \[ \boxed{\text{Transformer}} \]
A transformer is an electrical device used to change the voltage level of alternating current.
Step 1: A transformer works on the principle of mutual induction.
Step 2: It can step up or step down AC voltage.
Step 3: A step-up transformer increases voltage, while a step-down transformer decreases voltage.
Step 4: During this process, the frequency of AC supply remains unchanged.
Step 5: Therefore, the device is called a transformer. \[ \boxed{\text{Transformer}} \]
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