Electrical Machines MCQ

Q1. What is the primary function of a transformer?

Q2. In which type of machine is the armature placed on the stator?

Q3. What is the basic principle of operation of a DC motor?

Q4. Which of the following is the main component of a transformer?

Q5. What is the purpose of a commutator in a DC machine?

Q6. In an induction motor, which of the following is responsible for the production of the rotating magnetic field?

Q7. Which of the following is true for a synchronous motor?

Q8. Which of the following is NOT a type of electrical machine?

Q9. What is the typical efficiency range of an induction motor?

Q10. What is the function of the slip in an induction motor?

Q11. What is the main difference between a generator and a motor?

Q12. Which of the following is the characteristic of a DC generator?

Q13. Which component is responsible for voltage regulation in a transformer?

Q14. What is the primary purpose of a surge tank in a hydroelectric power plant?

Q15. What type of power loss occurs in the windings of electrical machines?

Q16. What is the function of the stator in a synchronous motor?

Q17. What type of starter is used for starting large squirrel cage induction motors?

Q18. What is the main purpose of the armature in a DC machine?

Q19. What is the effect of increasing the supply frequency on the size of a transformer?

Q20. What is the function of the rotor in an induction motor?