Question

Give below are two statements:

Statement 1: The Hall effect sensor is included in the magnetic core structure of the current probe.

Statement 2: The Hall effect sensor assures that the static magnetic flux in the core is exactly zero.

In the light of the above statements, choose the most appropriate answer from the options given below

1. Both Statement 1 and Statement 2 are correct
2. Both Statement 1 and Statement 2 are incorrect
3. Statement 1 is correct but Statement 2 is incorrect
4. Statement 1 is incorrect but Statement 2 is correct.

Answer 1

Correct Answer - Option 3 : Statement 1 is correct but Statement 2 is incorrect

A Hall effect sensor  is a type of sensor which detects the presence and magnitude of a magnetic field using the Hall Effect. The output voltage of a Hall sensor is directly proportional to the strength of the field.

Statement 1 Explanation- Hall sensors is used in  contactless measurements of direct current in current transformers. In such a case the Hall sensor is mounted in the gap in magnetic core around the current conductor. As a result, the DC magnetic flux can be measured, and the DC current in the conductor can be calculated.So Statement 1 is correct.

Statement 2 Explanation- Hall effect sensors respond to static (non-changing) magnetic fields. So it doesn’t assure static magnetic flux is zero.So statement 2 is incorrect .

Statement 1 is correct ,Statement 2 is incorrect So option(3) is right answer.