0
What else can I help you with?
Operation of PMMC instrument?
aku pon tatau
What is the type of singing with no instruments called?
A cappella
What type of instruments did a minstrel play?
Lute
What type of instruments were manufactured by the Laboratory Analytical Instruments industry?
Laboratory analytical instruments manufactured by this industry were used to conduct physical and chemical analyses.
What type of instrument is the guitar?
it is part of the sex instruments
Differences between Permanent magnet moving coil and moving iron?
Permanent magnet moving coil (PMMC) instruments use a moving coil that is suspended between the poles of a permanent magnet, whereas moving iron instruments use a stationary coil and a moving iron piece that moves within the coil's magnetic field. PMMC instruments are more accurate but have limited range, while moving iron instruments are less accurate but can measure higher currents. PMMC instruments are inherently more expensive compared to moving iron instruments.
What are the similarities of PMMC and moving iron type measuring instruments?
Both PMMC (Permanent Magnet Moving Coil) and moving iron type measuring instruments are analog devices used for measuring electrical quantities. They both operate based on the interaction between magnetic fields and electric currents to produce a mechanical deflection for display. Additionally, they are both commonly used in applications where accuracy and precision are important factors.
Why pmmc instrument have uniform scale?
PMMC instruments have a uniform scale because the deflection of the coil is directly proportional to the current passing through it. This linear relationship allows for precise measurement of small changes in current, making the scale consistent and uniform.
What is pmmc?
pmmc stands for permanent magnet moving coil instruments these instruments are secondary measuring instruments in these instruments a permanent magnet is installed and a moving coil in this way when current is passed through the fixed coil then a force will be developed on the moving coil and thus it moves and with this moving pointer moves on the scale and gives the corresponding reading . if someone wants to read it thoroughly then he can try ashfaq hussain , j.b.gupta of basic elelctrical engg. for b.tech first year .
Why pmmc instrument measure only ac not dc?
Permanent magnet moving coil instruments are used for measuring d.c. quantities only. This is so because for these instruments the torque is proportional to the operating quantity either voltage or current.
Why pmmc used for DC only?
Because in the coil DC current follow easly and pmmc meter is making with coil and AC current is not follow in coil so we used the pmmc only fpr DC current.
Operation of PMMC instrument?
aku pon tatau
Is Series resistance and PMMC used as voltmeter?
yes
What is difference between null type and deflection type instruments?
Null type instruments require a null balance point to be achieved for accurate measurement, while deflection type instruments measure the quantity directly as a deflection on a scale. Null type instruments are more accurate but require more intricate adjustments, while deflection type instruments are simpler to use but may have lower accuracy.
Why pmmc instrument is cannot be used to measure ac?
Pmmc meter are most accurate instrument for DC measurement however they are unable to measure the AC quantity. The working principle is as follows: a moving coil is free to move in a external static magnetic field. And the pointer moves according to the interaction of two fields, field of static mag. and that of measuring quantity. Now in case of it is impossible to produce a sustained magnetic field, that's why we can not use PMMC to measure the ac.
What Difference between null type and deflection type instrument?
Null type instruments require balancing the unknown quantity with a known quantity to obtain a measurement, while deflection type instruments measure the unknown quantity based on the amount of deflection of a pointer or needle. Null type instruments are more accurate but require more setup, while deflection type instruments are simpler to use but may have less precision.
What type of instruments are made of wood?
Many types of instruments are made of wood. Drums, string instruments, pianos, the list goes on and on.
