WorksheetsBlock 2 - 4b - Motors
Total questions: 13
Worksheet time: 8mins
Motors are devices that convert _____ energy into _____ energy.
The amount of torque depends on the...
length of the coil.
speed of rotation of the coil.
direction of the magnetic field.
strength of the magnetic field.
The AC motor consists of two main parts:
the rotor and the stator.
fan blades and wiring cover
cylinder and piston
center differential and cardan shaft
____ is the stationary part of the motor.
STATOR.
ROTOR
AC MOTOR
CYLINDER
_____________________ a device used to convert electric energy into mechanical energy.
Motor
Direct Current
Alternating Current
Compass
WHAT IS TORQUE?
Force that produce rotation.
KINETIC FORCE
MAGNETIC FORCE
What are the major assemblies of DC motors?
Stator, Rotor, and Brushes
Commutator, coils, stator
Springs, core, coils
Stator, brushes, springs
Motors may be rated by voltage, RPM, horsepower, or
application.
True
False
What is the most common type of rotor used today?
(a)
Speed and torque are...
Inversely proportional
Directly proportional
Electric motors that operate on the principle of two opposing
magnetic fields are
(a)
Motor speed is determined by two factors:
Input frequency and number of poles
Voltage and current
Resistance and frequency
Number of poles and voltage
In DC motors, the direction of the field
depends on the direction of
current flow
True
False
