This set of Basic Electrical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Characteristics of Lines of Magnetic Flux”.
1. Magnetic field lines seek the path of __________ resistance.
a) Maximum
b) Minimum
c) Infinite
d) Zero
View Answer
Explanation: Magnetic field lines will always seek the path of least resistance. It does not seek the path of zero resistance because, in practical scenarios, zero resistance is not possible.
2. Magnetic field lines form _________ loops from pole to pole.
a) Open
b) Closed
c) Branched
d) Either closed or branched
View Answer
Explanation: Magnetic field lines form closed loops from pole to pole. There is no discontinuity in the magnetic flux lines.
3. Do magnetic flux lines intersect?
a) Yes
b) No
c) Depends on the situation
d) Cannot be determined
View Answer
Explanation: Magnetic field lines do not cross each other because if they cross each other it means that there are two different directions of a magnetic field in that region and that is not possible.
4. Inside the magnet, field lines travel from?
a) North to south
b) South to north
c) West to east
d) East to west
View Answer
Explanation: Magnetic field lines originate at the north pole and terminate at the south pole of the magnet and magnetic field lines form closed loop so inside the magnet, they move from south to north.
5. Lines of magnetic flux which are parallel and in the same direction __________ each other.
a) Attract
b) Repel
c) Intersect
d) Cancel
View Answer
Explanation: Lines of magnetic flux which are parallel to each other and in the same direction repel each other because they tend to act as like poles and like poles repel each other.
6. More the number of magnetic flux lines _______ is the force of the magnet.
a) Greater
b) Lesser
c) Either greater or lesser
d) Neither greater nor lesser
View Answer
Explanation: More the number of magnetic flux lines, greater is the force of the magnet. This is because the magnetic flux lines denote the strength of the field of the magnet.
7. Magnetic field is strong when____________
a) magnetic field lines are closer
b) magnetic field lines are farther
c) magnetic field lines are longer
d) magnetic field lines are thicker
View Answer
Explanation: Magnetic field is strong where magnetic field lines are closer and weak where magnetic field lines are farther.
Sanfoundry Global Education & Learning Series – Basic Electrical Engineering.
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