If a technician wanted to accurately measure static pressure in a duct system, how would she place the sensing probe of the magnehelic gauge?
A) At the return grill inlet B) In line with the air flow
C) At the supply register outlet D) Perpendicular to airflow
D
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Permanent-split capacitor motors and shaded-pole motors are generally used for variable-speed control because they operate without having to disconnect a set of start windings with a ____ or starting relay.
a. membrane switch b. centrifugal switch c. pressure switch d. rotary switch
Multiview projection establishes two or more views of an object as projected on two or more planes by using orthographic projection techniques.
Answer the following statement true (T) or false (F)
What type of material is used for insulation in the walls of a modern freezer?
A. newspaper B. asbestos C. fiberglass D. plastic foam
Technician A says that the primary and secondary ignition systems are never connected. Technician B says that the primary and secondary windings are connected in some ignition coils. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B