DC Motor Questions

How does a split ring commutator work?

• Swaps the contact evert full turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.

• Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil do not experience a force in the same direction.

• Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.

Which part (s) of the DC motor connect the power supply to the split-ring and coil?

• Carbon brushes

• Magnets

• Commutator

• Slip rings

The motion in DC motor can be increased by the following factors... (you may choose more than one)

• Using a stronger magnet

• Increasing the potential difference

• Increasing the current

• Increasing the number of turns on the coil

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

NGSS.HS-PS3-5

What it is?

• Armature

• Commutator

• Brush

• Magnet

Which rule can be used to work out which way a coil of wire rotates in a motor?

• Fleming's left-hand rule

• Fleming's right-hand rule

Give two ways you can reverse the direction of a basic dc motor?

• Reverse the current

• Keep the current the same

• Reverse the magnetic field

• Keep the magnetic field the same

The operation of Commutator in DC Motor is

• to convert dc to ac

• to convert ac to dc

• to convert fixed dc to variable dc

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

What does the Thumb indicates?

• current direction

• motion of conductor

• direction of Field flux

Tags

NGSS.MS-PS2-5

to make the Motor A rotate backward and Motor B stop

• Pin 9 - GND, Pin 8 - 5V, Pin 7 - GND

  Pin 5 - GND, Pin 4 - GND, Pin 3 - GND

• Pin 9 - 5V, Pin 8 - GND, Pin 7 - 5V

  Pin 5 - GND, Pin 4 - GND, Pin 3 - GND

• Pin 9 - 5V, Pin 8 - 5V, Pin 7 - GND

  Pin 5 - 5V, Pin 4 - GND, Pin 3 - GND

• Pin 9 - GND, Pin 8 - 5V, Pin 7 - 5V

  Pin 5 - GND, Pin 4 - GND, Pin 3 - GND

Function of H-Bridge in DC motor control is

• Change the speed of the DC motor

• Change the direction of the DC motor

• Send feedback of the speed of the DC motor

• Measures the speed of the DC motor

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2