which of the following is true regarding the amperage draw of a blower motor being used to move air through…

which of the following is true regarding the amperage draw of a blower motor being used to move air through a duct system? a. motor amperage will go down if the door on the blower compartment is removed. b. motor amperage will go up if the blowers inlet is blocked. c. motor amperage will go up if the blowers outlet is blocked. d. motor amperage will go up if the door on the blower compartment is removed.

which of the following is true regarding the amperage draw of a blower motor being used to move air through a duct system? a. motor amperage will go down if the door on the blower compartment is removed. b. motor amperage will go up if the blowers inlet is blocked. c. motor amperage will go up if the blowers outlet is blocked. d. motor amperage will go up if the door on the blower compartment is removed.

Answer

Brief Explanations:

When the outlet of a blower is blocked, the motor has to work against a higher - pressure back - up. This requires more torque from the motor, and according to electrical - mechanical relationships in motors, more current (amperage) is drawn to provide the necessary torque. Removing the door on the blower compartment or blocking the inlet does not have the same effect of increasing the load in a way that would cause a significant increase in amperage like blocking the outlet does.

Answer:

C. Motor amperage will go up if the blower's outlet is blocked.