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What is the purpose of the mirror underneath the pointer of a galvanometer?
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What is the difference between ammeter and galvanometer?
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State principle of moving coil galvanometer?
Principle of Working:A Moving Coil Galvanometer works on the Electromagnetic effect of current carrying coil (free to move) being placed in an air-gap between the soft iron core and the strong pole pieces of the magnet.The current following in the moving coil which is the specimen to be sensed or measured results in a generation of a Magnetic Field which is opposite to that of the fixed magnetic pole pieces. And as like poles attract each other results in a generation of small deflecting torque which further deflects the pointer or the mirror attached to the axis of the coil.Construction:Moving Coil:The Moving coil which is free to move is being suspended from a soft metallic (non-magnetic) strip carrying the current specimen which is to be sensed or measured. The Moving coil is being suspended in the air-gap available between the fixed Soft Iron-Core and the fixed pole pieces of the magnet.The Soft Iron Core is used to provide a path of low reluctance so as to focus the magnetic field generated by the fixed magnetic pole pieces towards the moving coil. The use of low reluctance Soft Iron-Core helps to increase the sensitivity of the Galvanometer as well.In many of the Moving Coil Galvanometer Construction Soft Iron-Core pieces are removed and this results in the reduction of the sensitivity of the Galvanometer as a whole. In absence of the soft fixed iron core in the middle of the coil the coil then is narrowed in order to reduce the free air space, this narrowing of the coil results in the reduction of the Moment of Inertia(MI) of the moving coil arrangement. This results in having a good near to critical damping with very less oscillations.The Moving coil consists of a large number of turns wounded on a former which can either be in rectangular or circular in shape. The current carrying coil is made up of a thin non magnetic metal so as to have low resistance and less mass.Damping:Damping in Moving Coil Galvanometer is provided by an Eddy current damping mechanism. The damping is made as such to have a nearly critical damping by setting the device to be between under-damped and critical damped case.Controlling Torque:Spring Control mechanism is largely utilized to provide the suitable controlling torque.
When you have a cold shower does the bathroom mirror fog up?
No. The steam from a hot shower fogs the mirror.
Is there any mirror on the top of helicopter main rotor blade?
Helicopters do not have any mirror on top of the rotor. Periscope mirror is equipped on some aircraft to have clear vision of runway to pilot.
Why a hot shower fogs up a bathroom mirror?
the heat from the shower causes it to fog and if ur window for the bathroom is small then it takes a while for the air to escape causing the smoke to become traped to your mirror like if u blow your breath towards the mirror then it fogs and also not only your mirror gets foggy but also the floor or wall.thank u very much
How galvanometer work?
Electricity passing through a wire coil creates a magnetic field which twists a suspended magnet and mirror. A light beam reflects off the mirror and onto a scale.
How a galvanometer works?
Electricity passing through a wire coil creates a magnetic field which twists a suspended magnet and mirror. A light beam reflects off the mirror and onto a scale.
How parallax introduces errors in reading analog meters?
You get parallax errors with analogue meters if you don't align your eye so that it is perpendicular to the pointer. When this happens the pointer can appear to line up with the wrong mark on the scale. The further your point of view is away from the perpendicular, the greater the error. The potential for errors can be reduced by minimizing the gap between the pointer and the scale or better still fitting a mirror behind the pointer so that it is in the same plane as the scale. The mirror assists the viewer find the correct point of view, since in this condition (correct point of view) the reflection of the pointer will be hidden behind the pointer.
What does a galvonometer measure?
galvanometer is a device use to measure current.
What is the difference between ammeter and galvanometer?
i want this answer
What is steady deflection in ballastick gallvonameter?
in ballistic galvanometer there is a suspension fibre on which when charge passes mirror deflects due to magnetization and gives throw and due to this when again charge passes it deflects in other direction and forms a torque.which restricts the mirror to deflect in any position ...this is steady deflection.i.e.,when there is no deflection in the mirror ,it holds the throw on ballistic scale......
Where is the interior temperature sensor and how do you change it on a Citroen Picasso?
on my 2002 picasso its located on the nearside wing mirror, look underneath the mirror and you will see a little bump, that is the sensor, you can take the wing mirror apart to get to it but if you have pranged your mirror lately it can becomw faulty
Where is the outside air temperature sensor on a 2002 Renault Clio 1.2?
underneath passanger wing mirror
What is the purpose of a mirror in a microscope?
The purpose of a mirror is to reflect light through the diaphragm, the specimen, the objective lens, and body tube and into your eye so you can see the image. Never use sunlight when using a microscope with a mirror, as it could damage your retinas.
How do you activate camera underneath the rear view mirror of 2014 bmw 220i?
Activating a camera under a rear view mirror is easy. All you have to do is screw one in place.
What is parallax or sighting errors?
while doing experiments the analog readings should be taken very carefully ..the pointer should be in a parallel axis with your eyes so that the reading will not deviate from right one.otherwise error may occur this error is called parallax error. this error can be avoided by placing mirror at bottom of dial to adjust the axis with your eye by seeing in to mirror and the pointer
Why plane mirror can be used for decorative purpose?
to check our selves used in base of microscope used in vehicles to make telescope and kaledoscope
