Ch2 motors

Since a nameplate has limited space to convey the ratings, most information is abbreviated or coded to save space.

• T

• F

The actual voltage applied to a motor should be within 125% of the motors nameplate rated voltage.

• T

• F

AC motors will typically use voltage lvls of 24V, 48V, 90V, or 180V.

• T

• F

The list of motor nameplate locked-rotor indicating code letters begins with the letter "A" and ends with "Z".

• T

• F

Directly applying any frequency to a motor other than the nameplate rated frequency will change the motor's operating characteristics (speed and output torque) and can damage the motor.

• T

• F

Electric motors typically require either direct current (DC), single-phase alternating current (AC), or 3-phase alternating current (AC).

• T

• F

When the nameplate of a motor does not list a service factor rating, a service factor rating of 1.00 is assumed and there is no built-in safety margin for the motor.

• T

• F

Motor manufacturers produce only energy-efficient motors.

• T

• F

Insulation breakdown is the most common cause of motor failure.

• T

• F

For fractional-HP frame sizes, the frame number represents the distance from the bottom of the base to the center of the shaft in 8th of an inch.

• T

• F