Advantages and Disadvantages of Moving Coil Instruments
Advantages:
1. Uniform scale.
2. High sensitivity
3. Low power consumption.
4. No hysteresis loss.
5. Not much affected by stray magnetic
fields.
6. Very effective and efficient eddy
current damping.
7. High torque / weight ratio.
8. Very accurate and reliable.
9. Can be used in vertical and
horizontal position due to spring control and
10. Can be designed to cover a wide range
of currents and voltages by using shunt and series resistances respectively
Disadvantages:
1. Can be used only for D.C
measurements.
2. More costly than moving iron
instruments.
3. Develop errors due to ageing of
control springs and permanent magnets, and
4. Develop also errors due to friction,
mechanical unbalance, resistance temperature coefficient, etc.
Advantages are, Moving coil instruments consume quite less power. This is because the resistance of moving coil is small.The scale of moving coil instrument is uniform. Disadvantages are Due to friction at the bearings and temperature variations, errors are likely to be presentand the observed readings are may not be accurate and fresh calibration of the meters may become necessary.
ReplyDeleteInductor Coil Manufacturer in India | Medical Isolation Transformer in India
Thank you for sharing advantage and disadvantage for moving coil instruments.
ReplyDeleteInductor Coil Manufacturer in India | Medical Isolation Transformer in India
advantages:
ReplyDelete1)it can be made extremely sensitive.so even a minute current can be detected.
2)it come to rest quickly after disturbance.
It also measure DC only
ReplyDeleteReally it's a very very important for the students to know the advantage and disadvantage of a moving coil galvanometer.
ReplyDeleteThank you so much for it.
ReplyDeleteVery good
ReplyDelete