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- The instruments are suitable for use in AC and DC circuits.
- The instruments are robust, owing to the simple construction of the moving parts.
- The stationary parts of the instruments are also simple.
- Instrument is low cost compared to moving coil instrument.
- Torque/weight ratio is high, thus less frictional error.
- Error due to variation in temperature.
- Error due to friction is quite small as torque-weight ratio is high in moving coil instruments.
- Stray fields cause relatively low values of magnetizing force produced by the coil. Efficient magnetic screening is essential to reduce this effect.
- Error due to variation of frequency causes change of reactance of the coil and also changes the eddy currents induced in neighbouring metal.
- Deflecting torque is not exactly proportional to the square of the current due to non-linear characteristics of iron material.
What else can I help you with?
Is Voltmeter is a moving iron Instrument or moving coil instrument?
If this is a homework related question, you really should consider trying to solve it yourself before looking at this answer. Otherwise, the value of the lesson, and the reinforcement provided by the assignment, will be lost to you.A moving coil measuring instrument has a coil attached to the indicator, surrounded by a magnet.A moving iron measuring instrument has a magnet attached to the indicator, surrounded by a coil.In both cases, the indicator is driven by magnetic torque caused by current flow in the coil.
What is the Operating Principles of Moving Coil Instrument?
The basic principle of moving iron instruments is it works on the principal of magnetic repulsion.... it consists of two irons one stationary n other fixed to a moving pointer small current flows through a coil surrounding the irons.this creates a magnetic field ,which magnetise the two irons.. the magnetise iron will develop a repulsion force between each other, this will cause the pointer to move against the spring the pointer stop moving when the spring tension equals the repulsion force between the magnets...
How do you increase the mechanical advantage of a lever?
The mechanical advantage of a lever can be increased by moving the fulcrum towards the load and away from the power end.
What is one disadvantage that objects in LEO have?
Moving data across constellations of other satellites will be complex. Technology for that is still untested
Can instrument transformers be used to extend the range of a moving coil voltmeter?
Not directly, as MC instruments are direct-current instruments, whereas instrument transformers only work on a.c.
What is the advantage and disadvantage of crawler dozer?
Traction advantage , moving one place to another location
What is the advantage and disadvantage of reciprocating compressors?
The advantages of the reciprocating compressors is that it is easier to install and is very simple to install. The disadvantage of the reciprocating compressor is the high cost of maintaining it because of the many moving parts.
What is the disadvantage of a force advantage in a machine?
For example: think of the inclined plane- The advantage of gaining force is offset by the disadvantage of losing distance. So, that means... The longer the inclined plane is, the less steep it has to be and the less force a load needs to have exerted on it to move. :) Hope that answers your question. :)
What is the advantage and disadvantage of mechanical mouse?
Mouses may not give you cramps when scrolling or moving around like trackpads do, but mouses can mess up your wrist. They make special mosepads for that, though.
What is the construction and working details of moving iron and moving coil ammeters and moving coil voltmeters?
Different b/w a moving coil instrument and a moving iron instrument
What is the disadvantage of typewriters?
you have to keep moving the paper
Is there such a word as repelsion?
No. I believe you may be thinking of repulsion, which means a force or emotion moving you away from something in a strong or violent manner.No, it is spelled "repulsion".
What on earth often keeps things from moving toward each other?
Magnetic Repulsion
Is megger related to hot wire instrument moving coil or moving iron?
Megger is related to a hot wire instrument with a moving coil. The megger uses a moving coil to measure insulation resistance in electrical circuits and equipment. This type of instrument is specifically designed for insulation testing.
What instrument is played by moving a slide back and fourth?
A trombone is an instrument that is played moving a slide back and forth.
What are the benefits and disadvantages of belonging to a family?
An advantage of living with your family is that it is most-likely free. You do not have to pay rent; therefore, you have more money for other things. However, a disadvantage is the lack of privacy that comes with moving in.
Why are moving iron instruments unpolarized?
Moving-coil instruments are polarised, not unpolarised. This is because they are direct current instruments, and the direction of the current determines the direction in which the instrument's point will move. If a moving coil instrument is connected incorrectly, then the instrument will try and read 'downscale' -in other words, the resulting torque will try and move the pointer backwards.AnswerA moving-iron meter operates by the repulsion between a fixed iron pole piece, and a moving iron pole piece to which the pointer is attached. The magnetic polarity of the fixed and moving pole pieces is determined by the direction of current flowing though a coil. The magnetic polarities induced into the fixed and moving iron pole pieces, when the current flows in one direction, are both north; and, when the current flows in the oppositedirection are both south. So the pole pieces always repel each other, regardless of current direction.
