the loading arrangement used in normal electrical machines is brake drum - spring balance arrangement. This is used to calculate the torque and output power.
the formula for torque is 9.81*(diffference between the spring balance) * radius of brake drum.
thee output power obtained is 2*π*motor speed*torque obtained
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A belt moving over this break drum provides necessary torque to the shaft of the motor, and in turn loads the shaft with a finite torque. Two calibrated spring balances are connected to either side of the belt, which is moving over the break drum
higher power motors will have a bigger diameter shaft to easily handle more torque
no different from ac
Dc motors have much higher torque at low speeds which is why they are used in hand tools and locomotives
dc series motor is used for traction...
describe how to use starting resistors to star a DC motor
Dc shunt motor is constant speed motor.Its speed is constant with armature current.This shunt motor is used in paper mills and drilling machines
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
6V dc motor