Electrical Engineering ⇒ Topic : Merits of Moving iron Instruments

Merits of Moving iron Instruments The moving iron instruments have the following advantages :

• These are cheap, robust and simple in construction
• The instruments can be used for both A.C.as well as D.C. circuits.
• These instruments have high operating torque.
• These instruments are reasonable accurate.

Demerits The following are the disadvantages of moving iron instruments :

• Such instruments have non-uniform scale.
• These instruments are not very sensitive.
• Errors are introduced due to change in
• frequency in case of A.C. measurements.
• Higher power consumption.