electricity, magnetism, motor connection Quiz…

Q: Which of the following is the unit of electric current?

Ampere (A) — Electric current is measured in Amperes (A).

Q: What is the relationship between electricity and magnetism?

Both b and c are correct. — Changing magnetic fields induce electric fields and vice-versa (Electromagnetism).

Q: In a DC motor, what component provides the magnetic field?

The field windings/Permanent magnets — Field windings or permanent magnets provide the stationary magnetic field.

Q: What happens when you reverse the polarity of the power supply to a DC motor?

The motor rotates in the opposite direction. — Reversing polarity reverses the direction of current flow through the armature, hence reversing motor rotation.

Q: Which type of motor connection typically provides the highest starting torque?

Series connection — Series motors have high starting torque due to the series field current.

Question 1 of 5

Which of the following is the unit of electric current?

Electric current is measured in Amperes (A).

Question 2 of 5

What is the relationship between electricity and magnetism?

Changing magnetic fields induce electric fields and vice-versa (Electromagnetism).

Question 3 of 5

In a DC motor, what component provides the magnetic field?

Field windings or permanent magnets provide the stationary magnetic field.

Question 4 of 5

What happens when you reverse the polarity of the power supply to a DC motor?

Reversing polarity reverses the direction of current flow through the armature, hence reversing motor rotation.

Question 5 of 5

Which type of motor connection typically provides the highest starting torque?

Series motors have high starting torque due to the series field current.

electricity, magnetism, motor connection Quiz