Electronics - Magnetism and Electromagnetism

Exercise : Magnetism and Electromagnetism - General Questions
6.
The Hall effect
is a phenomenon with no practical applications
is used in various sensor applications
can develop potentials of thousands of volts
is the basis for solar cell operation
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
"Series" and "parallel" as applied to dc motors refer to
the connection of the motor and controller
the connection of the field coil and armature windings
the connection of the brush and commutator
the connection of the motor batteries
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
The component that produces power in an electromagnetic generator is called the
armature
field winding
commutator
brush
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
What is the magnetomotive force in a 150-turn coil of wire with 2 A flowing through it?
13.33 mAt
300 At
75 At
152 At
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
A Hall effect sensor
exists only in theory
is a noncontacting magnetic sensor
can operate only a few times before failure
produces very large voltages
Answer: Option
Explanation:
No answer description is available. Let's discuss.