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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a rotating magnetic field?
💡 Hint: Think about how the motor operates and what causes the rotation.
Question 2
Easy
How do you calculate the synchronous speed?
💡 Hint: Focus on the variables involved: frequency and number of poles.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula for calculating synchronous speed?
- Ns = (120P)/f
- Ns = (120f)/P
- Ns = (f)/P
💡 Hint: Remember the correct order of frequency and poles in the formula.
Question 2
True or False: Slip refers to the precise speed at which the magnetic field rotates.
- True
- False
💡 Hint: Think about what happens when the rotor reaches synchronous speed.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An induction motor has a synchronous speed of 1500 RPM. If the motor operates at full load with a speed of 1440 RPM, calculate the slip and the torque developed.
💡 Hint: Focus first on calculating the slip.
Question 2
Calculate the expected synchronous speed of a 6-pole motor operating on a 50 Hz supply. How does the number of poles affect this speed?
💡 Hint: Make sure to apply the synchronous speed formula correctly.
Challenge and get performance evaluation