How is the airflow adjusted on most commercial air handlers?
A) By adjusting the pitch of the blades on the blower wheel
B) By increasing or decreasing the voltage to the fan motor
C) By adjusting the sheave on an adjustable pulley
D) By moving the speed tap on the blower motor
C
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In which of the following output devices would you be more likely to find a piezo actuator?
A. linear proportioning solenoid B. electrohydraulic injector C. non-contact TPS D. stepper motor
Give five examples of nominal sizes in everyday life. What is the purpose of a nominal size?
What will be an ideal response?
To always give a result of 1 you can OR any variable with 1
Indicate whether the statement is true or false
How can a technician check to see if the coil and condensing unit on an AC split system are matched?
A) Call the equipment supplier and provide the system model numbers. B) The refrigerant line stub out sizes should be the same. C) The first two digits of the equipment model number should be the same. D) Check to see that both pieces are manufactured by the same company.