Question
In: Electrical Engineering
Permanent magnets are commonly used for what part of the starter?
Permanent magnets are commonly used for what part of the starter?
a. Armature
b. Solenoid
c. Field coils
d. Commutator
Solutions
Expert Solution
Field coils:- Field coils are made of permanent magnets. A permanent magnet maintains constant
field strength and provide a strong magnetic field inside the starter.
The permanent magnets used are an alloy of iron, boron, and neodymium and are powerful.
Hence, the correct option is c.
Armature:- The armature is present inside the field coils and is supported with bushings or ball
bearings at both ends, which enables it to rotate.
The armature is made of thin, circular disks of steel laminated together and wound with heavy
gauge insulated copper wire.
Solenoid:- Solenoid is an electromagnetic switch containing two separate but connected
electromagnetic windings.
Commutator:- A commutator reverses the direction of current between rotor and external circuit.
The commutator is made of a set of copper segment bars.
Thus, a, b and d are the incorrect option.
Dr. OWL answered 3 years agoRelated Solutions
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