Electrical Machines MCQs : Here you will find MCQ Questions related to "basic" in Electrical Machines. These MCQ Questions Will help you to improve your Electrical Machines knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.
Question 1
_________________ converts mechanical energy into alternating current electricity.
A. DC generator
B. AC generator
C. Both A and B
D. None of the above
Question 2
An electric generator is a device that converts mechanical energy to electrical energy
A. TRUE
B. FALSE
C. Can be true and false
D. Can not say
Question 3
How many types of transformers?
A. 1
B. 2
C. 3
D. 4
Question 4
The power rating of the field winding is ___________
A. equal to the power rating of the machine
B. 1/2 to 2% of the rated power of the machine
C. greater than the power rating of the machine
D. less than the power rating of the machine
Question 5
In a synchronous machine, salient pole construction has been found to suit best for ___________
A. high speed prime movers
B. medium speed prime movers
C. low speed prime movers
D. any of the mentioned
Question 6
In a synchronous generator, the frequency of the generated EMF depends on ___________
A. rotational speed
B. poles
C. stator
D. both rotational speed and poles
Question 7
A transformer is a static device that converts alternating current from one voltage level to another level (higher or lower), or to the same level, without changing the frequency.
A. TRUE
B. FALSE
C. Can be true and false
D. Can not say
Question 8
How many types of transformers based on structure?
A. 1
B. 2
C. 3
D. 4
Question 9
PM machines have permanent magnets in the rotor which set up a magnetic field
A. TRUE
B. FALSE
C. Can be true and false
D. Can not say
Question 10
Which of the following can be used for braking purposes in electric trains?
A. Induction motor
B. Dc series motor
C. Dc differentially compounded generator
D. Induction generator