0
Typical scheme of measuring el. current and voltage
The deflecting torque in any moving-iron instrument is due to forces on a small piece of magnetically 'soft' iron that is magnetized by a coil carrying the operating current. In repulsion type moving-iron instrument consists of two cylindrical soft iron vanes mounted within a fixed current-carrying coil. One iron vane is held fixed to the coil frame and other is free to rotate, carrying with it the pointer shaft. Two irons lie in the magnetic field produced by the coil that consists of only few turns if the instrument is an ammeter or of many turns if the instrument is a voltmeter.
Current in the coil induces both vanes to become magnetized and repulsion between the similarly magnetized vanes produces a proportional rotation. The deflecting torque is proportional to the square of the current in the coil, making the instrument reading is a true 'RMS' quantity Rotation is opposed by a hairspring that produces the restoring torque. Only the fixed coil carries load current, and it is constructed so as to withstand high transient
Add your answer:
Earn +20 pts
What will happen in the absence of iron cylinder in a moving coil galvanometer?
it will not work
What is type of input of loudspeaker?
The type of input for a loudspeaker is an electrical signal that is typically transmitted through wires or cables connected to an amplifier or audio source. The electrical signal is converted into mechanical vibrations that produce sound waves, which are then emitted by the loudspeaker.
What kind of tool makes work easier and has few or no moving parts?
screwdriver, wedge, tire iron,
Does lgks360 have loudspeaker?
lg ks360 does have a loudspeaker !
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
How do you disrupt or jam a loudspeaker?
up your neighbour's loudspeaker?
What is the duration of The Loudspeaker?
The duration of The Loudspeaker is 1.12 hours.
Is loudspeaker an input device?
No, Loudspeaker is an output device.
When was The Loudspeaker created?
The Loudspeaker was created on 1934-06-01.
How many syllables in loudspeaker?
There are two syllables in "loudspeaker."
Who is the inventor of the loudspeaker?
Name: Johann Phillip Reis-1st loudspeaker Name: Alexander Graham Bell - Electric loudspeaker
Which are the different types of loudspeakers?
1) Crystal Loudspeaker 2) Electrostatic (Condenser/Capacitor) Loudspeaker 3) Dynamic Loudspeaker
