The document discusses electromagnetic brakes as an alternative to conventional friction brakes. Electromagnetic brakes work by inducing eddy currents in a disc using a magnetic field, generating a torque that opposes the disc's rotation. Some advantages of electromagnetic brakes are that they require no friction, little maintenance, produce less noise, and are safer. Potential applications include use in railway systems and road vehicles. The conclusion is that electromagnetic braking could replace conventional brakes due to the lack of friction and heat.

1. Deepak Kumar
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3.  What Is brake?
 Need for alternative
 What is electromagnetic brake
 Advantages
 Disadvantages
 Applications
 conclusion

4.  A brake is a mechanical device which retards
motion.
 Brakes use friction between two surfaces to
convert the kinetic energy of the moving
object into heat.
 Types of Frictional brakes-Disc, Drum

6.  All conventional systems of braking in road
vehicles uses development of contact friction
for retardation
 These systems are prone to the wear and tear
on usage
 Conventional braking systems produces
continuous power dissipation as heat and
may fail if the temperature rises too high
 Friction based braking methods are also not
efficient under wet conditions

7.  Disc is rotated in magnetic field
 eddy currents will be produced in disc
 eddy currents induced in disc will produce a
torque (motor principle)
 produced torque in disc opposes actual
rotation of disc (Lenz law)

9.  No friction
 Low maintenance requirement
 Less noise
 Simple in design
 High degree of safety

10.  Failure to act as a holding device
 Usage of electric power for
braking
 Less effective under very low
velocities

11.  Already in use under some railway system
 Can be used for any road vehicles
 Equally applicable to heavy and light vehicles
 Can be used as additional retarder for
aircrafts

12.  Electromagnetic Braking is superior to
conventional frictional braking as there is no
friction and heat in electromagnetic braking.
 So the conventional disc and drum brakes can
be replaced with electromagnetic brakes.