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Subject:Electrical EngineeringPrice: Bought3
vi. How would the torque differ if 1.5A AC was used instead of 1.5A DC? The properties of AC is that the current would be changed over a certain period of time, As a result of the continuous change, the rotor's impact will be cancelled, and the torque will be close to zero. When 1.5A AC is used instead of 1.5A DC, the torque varies sinusoidally. This is since, according to the expression I*sin (0), the value of the current will change as the value of the current changed. vii. How could a unidirectional torque be produced for 0 <0 < 360- ? During half of the loop, current in the winding must be switched off to produce unidirectional torque for 0 0 360. If we switched (+) to (-) or vice versa per 90, we'd get unidirectional torque (Reverse Polarity), This can be accomplished by changing the current's direction. It could be achieved by using a DC motor to compile the experiment. Good
Lab Discussion: Discuss on points vi) and vii) Above . What lessons have you learnt from this Lab? Suggest an experiment to study the electromechanical energy conversion in linear actuators. Describe an interesting example of electromechanical energy conversion.
