Motor Evaluation

Answering the following questions, you can test your knowledge on the subject

What main advantage is there for a sinusoidal compared to a trapezoidal commuted motor?
Choose the correct answer

The current is increasing quickly in one phase and
               decreased in another
The currents are square shaped
The current is increasing smoothly in one phase
                and decreased in another
There is no main advantage

What will you verify with no load test in an electric motor?
Choose the correct answer

Internal resistance
Internal current
Internal voltage constant
Internal impedance

How could you get the impedance of the motor?
Choose the correct answer

By making a short circuit test
By measuring the impedance of the motor
By making a no load test
By measuring the speed of the motor

Why is it not good to make a short circuit test in reality?
Choose the correct answers

Current through stator windings will overheat the windings and damage them
The current becomes too high
It’s easier to make short circuit test in virtual environment
The voltage becomes too high