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1. DIFFERENCES
BETWEEN DC AND
AC MOTORS

2. SIMPLE DC MOTOR
• Has a direct current as a power source, such as a 1.5V dc
battery for example.
• Its function is to convert electrical energy to mechanical energy
that can perform work.
• Consists of various components such as a split ring
commutator, permanent magnet, brushes, a coil, a direct
current power supply and current carrying wires.

3. FLEMINGS LEFT HAND RULE:

4. SIMPLE DC MOTOR

5. SIMPLE DC MOTOR EXPLAINED
• Due to the forces in the motor , torque is produced which turns the
loop.
• After a 90 degree turn, the coil comes to a vertical position, where
there is no force acting on it, but due to the coils moment of inertia
the coil continues to rotate.
• After a 180 degree turn the position of the conductors has been
changed.
• Because of the split ring commutator one can conclude from the
previous illustration in this case, at the North pole an upwards force
will always be produced and at the South pole a downwards force will
be produced.

9. SIMPLE AC MOTOR
• Has an alternating power source.
• Similar to a DC motor, a AC motor also converts electrical
energy to mechanical energy.
• A simple AC motor consists of various components such as a
slip ring commutator, an AC power supply, a permanent
magnet, and current carrying wires.

10. SIMPLE AC MOTOR

11. SIMPLE AC MOTOR
• One of the main difference a AC motor has from a DC motor is
that an AC motor has a slip ring commutator which allows the
current to continuously change direction in the coil of the ac
motor.
• Another difference is that the power supply supplies alternating
current instead of a direct current which allows the rotor to
rotate in one direction in a magnetic field.
• The ac power supply can be produced by a device called a AC
generator.

12. THANK YOU