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Electrodynamics

by V. Gokal

The D.C. Motor


Result: % (/5)
Thank you for taking this test.
The correct answers under each question.

Question 1:

What is the energy conversion in motors?

A

mechanical energy to electrical energy


B

electrical energy to mechanical energy


C

electrical energy to potential energy


D

kinetic energy to mechanical energy



Question 2:

Which device in the d.c. motor is continuously changing the current direction in the loops?

A

brushes


B

split ring commutator


C

magnets


D

coils



Question 3:

Which part of the motor ensure electrical contact without being rigidly attached?

A

magnets


B

split ring commutator


C

slip rings


D

brushes



Question 4:

Question 4 and 5 refer to this diagram. What is X?

A

magnet


B

brushes


C

split-ring commutator


D

slip rings



Question 5:

What is Y?

A

magnet


B

brushes


C

split ring commutator


D

slip rings




Your Test marks can be found in History, under the publishing link.