# Explain how an air-core gauge works.

### Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

### Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

#### Solutions

Chapter
Section
Chapter 21, Problem 3RQ
Textbook Problem

## Explain how an air-core gauge works.

Expert Solution
To determine

The working of an air-core gauge.

### Explanation of Solution

The air-core gauge works on the behavioral exchange between the two electromagnets and the effect of their field on the permanent magnet. The permanent magnet is attached to the needle.

The permanent magnet is placed inside the windings of the two electromagnets. One of the winding is the reference winding, which receives battery voltage at all times. The other winding is the field winding placed at an angle with the reference winding...

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