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  2. Water brake - Wikipedia

    en.wikipedia.org/wiki/Water_brake

    The housing is vented to the outside to allow air to displace the water as the water level in the unit rises and falls. The amount of torque that can be absorbed is defined by the equation T=kN 2 D 5 where T = torque, N = RPM, D = the diameter of the rotor and k = a constant dependent on the size and shape and angle of the rotor/stator pockets.

  3. Eddy current brake - Wikipedia

    en.wikipedia.org/wiki/Eddy_current_brake

    Disk electromagnetic brakes are used on vehicles such as trains, and power tools such as circular saws, to stop the blade quickly when the power is turned off.A disk eddy current brake consists of a conductive non-ferromagnetic metal disc attached to the axle of the vehicle's wheel, with an electromagnet located with its poles on each side of the disk, so the magnetic field passes through the ...

  4. Electromagnetic clutches and brakes - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_clutches...

    In an electromagnetic brake, the north and south pole is created by a coil shell and a wound coil. In a brake, the armature is being pulled against the brake field. (A-3) The frictional contact, which is being controlled by the strength of the magnetic field, is what causes the rotational motion to stop.

  5. Electric friction brake - Wikipedia

    en.wikipedia.org/wiki/Electric_friction_brake

    Interference is known as 'pulsating brakes' which may occur when braking while also having the turn indicator flashing. There are different ways to minimize this problem, and it ranges from using a special pulse preventer to having a separate electric brake trailer connector with a brake circuit completely separated from the rest of the trailer ...

  6. Electro-pneumatic brake system on British railway trains

    en.wikipedia.org/wiki/Electro-pneumatic_brake...

    The first Southern units fitted with EP brake could be considered the Bulleid double deck 4-DDs built 1949 (4001 & 4002). The EP brake fitted to this stock was not of the self lapping type and still required the Westinghouse brake as the 'fail to safe' braking as the EP brake fitted was of the 'energise to apply' type, which meant if there was a loss of brake control voltage the EP brake was ...

  7. Regenerative braking - Wikipedia

    en.wikipedia.org/wiki/Regenerative_braking

    This energy displaced the oil normally burned to keep the water hot, and thereby recovered energy that could be used to accelerate again. [24] The main disadvantage of regenerative brakes when compared with dynamic brakes is the need to closely match the generated current with the supply characteristics and increased maintenance cost of the lines.

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