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Electrical Engineering: Magnetism Concepts

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Electrical Engineering: Magnetism Concepts

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Questions and Answers

What is the main advantage of a Permanent Magnet Synchronous Motor (PMSM) over a switched reluctance motor?

More cost-effective
Lower efficiency
Simpler control circuitry
Higher torque capability (correct)

In the context of Brushless DC Motors, what is the function of a Hall Effect position sensor?

Controls the speed of the motor
Monitors the position of the rotor (correct)
Regulates the voltage input
Adjusts the current flow

How does a Permanent Magnet Brushless DC motor differ from a conventional Brushed DC motor?

It uses electronic commutation instead of mechanical brushes (correct)
It requires an external power supply for operation
It has brushes for commutation
It has lower efficiency

What type of motor is a stepper motor according to the text?

Brushless DC motor (A) Signup and view all the answers

Which component is responsible for the discrete angular rotation in a stepper motor?

Magnetic interaction between rotor poles and energized windings (D) Signup and view all the answers

What is the role of a Hall effect sensor in a stepper motor system?

To provide feedback on rotor position (C) Signup and view all the answers

What is the effect of limited resolution in stepper motors on the position accuracy of incremental servo systems?

Decreases position accuracy (A) Signup and view all the answers

How does a stepping motor move in response to input pulses?

In steps of a fixed angle (B) Signup and view all the answers

Which type of actuator is a stepping motor classified as?

Digital actuator (A) Signup and view all the answers

What is the smallest angle through which a stepper motor can move known as?

$θs$ (A) Signup and view all the answers