Question: A PM DC electric motor will be selected for an arm mechanism which has a length of 0.3 meters. This arm is aimed to

A PM DC electric motor will be selected for an arm mechanism

A PM DC electric motor will be selected for an arm mechanism which has a length of 0.3 meters. This arm is aimed to lift 2 kg of load attached to its free end while rotating with 60 rpm at maximum power. There will be a gearbox with 3:1 ratio (speed reducer) and 80% efficiency attached between the motor and the arm. a) State the stall torque, maximum speed and power requirements for the desired motor at maximum loading, b) If input voltage is required to be 24 V and armature resistance of all possible motors is 1.5 ohm, state electrical constant and torque constant of the desired motor.

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