Practice Working Principle (EMF Generation) - 1.3.5.2 | Module 4: DC and AC Electrical Machines | Basics of Electrical Engineering
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1.3.5.2 - Working Principle (EMF Generation)

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does DC stand for in the context of field excitation?

💡 Hint: Think about the type of current supplied to the rotor.

Question 2

Easy

Describe Faraday's Law in simple terms.

💡 Hint: Consider the interaction between magnets and wires.

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 main function of a synchronous generator?

  • To store energy
  • To convert mechanical energy into electrical energy
  • To act as a transformer

💡 Hint: Consider what the generator's main purpose is.

Question 2

True or False: A synchronous generator can produce power without a prime mover.

  • True
  • False

💡 Hint: Think about what drives the generator.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A synchronous generator with 4 poles is designed to operate at a frequency of 50 Hz. Calculate the synchronous speed of the generator. If the rotor speed decreases to 1400 RPM, what is the percentage slip?

💡 Hint: Use the synchronous speed formula and compare it with the actual rotor speed.

Question 2

If a synchronous generator operates at 2,000 RPM with 6 poles and produces an EMF of 400 V, what is the frequency of the output? Also, if the flux per pole is reduced, how would that affect the EMF?

💡 Hint: Know the relation between RPM, poles, and frequency, as well as the EMF equation.

Challenge and get performance evaluation