- Submitted By: Don-Garganta
- Date Submitted: 07/20/2016 6:55 PM
- Category: Science
- Words: 521
- Page: 3

Also called Permanent-Magnet Moving Coil

(PMMC).

Based on the moving-coil galvanometer

constructed by Jacques d?Arsonval in 1881.

Can be used to indicate the value of DC and

AC quantity.Also called Permanent-Magnet Moving Coil

(PMMC).

Based on the moving-coil galvanometer

constructed by Jacques d?Arsonval in 1881.

Can be used to indicate the value of DC and

AC quantity.Also called Permanent-Magnet Moving Coil

(PMMC).

Based on the moving-coil galvanometer

constructed by Jacques d?Arsonval in 1881.

Can be used to indicate the value of DC and

AC quantity.

When current flows through the coil, the

core will rotate.

Amount of rotation is proportional to the

amount of current flows through the coil.

The meter requires low current (~50uA) for

a full scale deflection, thus consumes very

low power (25-200 Uw).

Its accuracy is about 2% -5% of full scale

deflectionWhen current flows through the coil, the

core will rotate.

Amount of rotation is proportional to the

amount of current flows through the coil.

The meter requires low current (~50uA) for

a full scale deflection, thus consumes very

low power (25-200 Uw).

Its accuracy is about 2% -5% of full scale

deflectionWhen current flows through the coil, the

core will rotate.

Amount of rotation is proportional to the

amount of current flows through the coil.

The meter requires low current (~50uA) for

a full scale deflection, thus consumes very

low power (25-200 Uw).

Its accuracy is about 2% -5% of full scale

deflection.

Given frame of permanent moving coil is 6m2.

The number of winding around coil is 50 and flux 0.12wb/m2 . If 1mA current through the coil, calculate the deflection torque.

A meter PMMC with dimension 4cmx2cm has 60 turns and its flux density is 0.3T. The resistance of the meter is 20k? Calculate the Deflection Torque, Td produced by the meter when the voltage is 315V.

4/29/Given frame of permanent moving coil is 6m2.

The number of winding around coil is 50 and flux...