Electro dynamometer type of instruments are enclosed in a casing made up of high permeability material to:

To remove electrostatic effects.

To provide mechanical strength to the coils present.

To protect against external magnetic fields.

Electro dynamometer type of instruments are enclosed in a casing made

1.	Electro dynamometer type of instruments are enclosed in a casing made up of high permeability material to:
A.	To remove electrostatic effects.
B.	To provide mechanical strength to the coils present.
C.	To protect against external magnetic fields.
D.	Provide good damping
Answer» D. Provide good damping

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Electro dynamometer type of instruments are enclosed in a casing made up of high permeability material to:

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