Understanding Electrical Motors

What type of energy do induction motors convert electrical energy into?

• Mechanical energy

• Thermal energy

• Chemical energy

• Nuclear energy

What is the primary function of the fan in an induction motor?

• To increase speed

• To cool down the motor

• To reduce noise

• To generate power

What is the purpose of the bearings in an induction motor?

• To insulate the wires

• To support and smooth the rotation of the shaft

• To conduct electricity

• To generate electromagnetic fields

What does the stator in an induction motor do?

• Expands and contracts

• Remains stationary

• Moves up and down

• Rotates

What is the rotor design mentioned in the text?

• Linear type

• Squirrel cage type

• Circular disc type

• Hamster wheel type

What is the main purpose of the squirrel cage in an induction motor?

• To store energy

• To concentrate the magnetic field

• To insulate the motor

• To reduce friction

What happens when electricity passes through a wire?

• It generates an electromagnetic field

• It creates a vacuum

• It becomes insulated

• It cools down

What is the effect of reversing the current direction on the magnetic field around a wire?

• The field turns into electrical energy

• The field disappears

• The field's polarity reverses

• The field becomes static

What configuration connects the motor coils directly to two phases?

• Star or Y configuration

• Circular configuration

• Delta configuration

• Linear configuration

What is the result of the star or Y configuration in terms of voltage across the coils?

• Higher voltage

• Variable voltage

• Lower voltage

• No voltage