Construction and working of electric bell?

Answer 1

an electric bell has an electromagnet emitter near the iron strip .the iron strip has a connection screw which helps to complete the circuit. the electromagnet helps to pull the iron strip from the connection screw. this breakes the circuit and the electromagnet no longer will have the power to pull the iron strip, so the iron strip moves to the connection screw and makes the circuit complete which makes the iron strip pull towards the gong this cycle continuous till the switch is on

Answer 2

How an Electric Bell works:

The bell system is a circuit consisting of an electromagnet, a switch, set to off, which the ringer presses, a power source, a gong, a hammer (which forms part of a second switch), and electrical contact point.

Once the ringer presses their switch the citcuit is completed, and the electromagnet becomes active and attracts the hammer.

The hammer moves toward the magnet, striking the gong,

but as it does so the circuit is broken (the hammer is part of the second switch completing the circuit, remember!),

and the hammer falls back.

Once it has fallen back into place, the circuit is completed and it moves forward,

striking the gong and breaking the circuit again,

which cycle is repeated until the ringer releases their switch.

Answer 3

1. Construction-:

• electric bell works on magnetic effect of electric current
• it consists of a coil wire wound on an iron piece
• the coil acts as an electromagnet
• an iron strip with a hammer at the is kept close to electromagnet
• there is no contact screw near the iron strip

2. Working

• when the iron strip is in contact with screw,the current flows through the coil which becomes an electromagnet
• It the pulls the iron strip.In the process,the hammer strikes the gong of the bell to produce a sound
• when the electromagnet pulls the iron strip,the circuit breaks
• the coil is no longer electromagnet
• it no longer attracts the iron strip
• the iron strip comes backs to its orignal position and touches the contact screw again
• this again complete the circuit and the coil again again attracts the iron strip and strikes the gong
• this process is repeated in quick session
• the hammer strikes the gong everytime the circuit is complete
• this is how the bell rings

Answer 4

Construction:

An electric bell consists of an electromagnet. One end of the winding is connected to T1 and the other to a spring which is mounted on a soft iron strip called the armature. One end of armature winding is connected to terminal T1 and the other to a spring, which is mounted on a soft iron strip. A rod is attached to the armature and the free end of the rod carries a small hammer, which strikes a bell. A very light spring is attached to a screw, which is joined to terminal T2.

Working:

The electric circuit is completed through a battery and push switch button connected to the terminal T1 and T2. When the push button is pressed the electric circuit is completed and the armature is attracted towards the electromagnet as a result, the small spring gets detached from the screw due to which the electric circuit is broken and the electromagnet is demagnetized. Hence, the attraction disappears and the armature is brought back by the spring to its original position. Contact of the spring with the screw is now remade, which completes the electric circuit. The action is repeated over and over again consequently. The armature vibrates and hammer attached to it strikes the gong and the bell rings and sound is produced.

Answer 5

1. The bell push button switch is held closed.

2. The iron bell-striker is attracted to the electromagnet and strikes the bell.

3. As the striker moves towards the bell, a contact fixed to the striker arm loses contact with a fixed contact fixed to the baseboard, so that electricity stops flowing through the coil, which loses its magnetism.

4. A spring returns the striker arm to its original position, which re-makes the contact so that electricity flows through the electromagnet again.

Back to number 1 and the cycle repeats itself.

The bell will continue to ring as long as the bell push button switch is held closed.

Another answer

It's a simple electro-magnetic mechanism: in a bell, there is a circuit for an electro-magnet (which is triggered by the bell push button). This electro magnet is covered by a metal "bowl" which forms the bell which makes the sound. Also, there is a metal rod, attached to a stationary end. So, when someone pushes a button, the circuit is closed => electricity goes through the Electro Magnet => the metal rod is attracted to the magnet and hits the bowl, creating a sound.

Answer 6

describe the construction ,function and use of either a relay ,solenoid , an electric motor or transformer

Answer 7

To construct an electric bell we need,1.Electromagnet, 2.Armature, 3.Spring, 4.Armature rod, 5.Hammer 6. Gong. Connect one end of armature winding to terminal, and use a battery switch.