The mighty motor video questions
Engineering
University
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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Name three materials that the frame can be made from
Sheet steel
Cast iron
Cast aluminium
Copper
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What material are the stator and rotor laminations made from?
Polycor steel
Aluminium
Copper
Ferrite
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are laminations used in the stator and rotor?
To increase hysteresis
To reduce hysteresis
To reduce eddy currents
To increase eddy currents
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is meant by the ‘IP’ rating?
Increased protection
Ingress protection
Item portabilty
Internal protection
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are the stator and rotor laminations heated in an inert atmosphere and then exposed to air?
To remove surface oxidation
To harden the surfaces
To reduce surface oxidation
To oxidise their surfaces, and to anneal the metal
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the stator coils made from?
Aluminium
Bare copper wire
Enamelled copper wire
Steel wire
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is overheating of the stator detected?
By embedding thermistors in the windings
By embedding resistors in the windings
By embedding transistors in the windings
By embedding flux capacitors in the windings
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