Which substance can be used to safely purge excess oil from refrigerant lines?
a. Compressed air
b. Dry nitrogen
c. Dry oxygen
d. Refrigerant vapor
b. Dry nitrogen
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Technician A says that a beam type torque wrench should be as accurate as a click type. Technician B says that dial gauge type torque wrenches are ideal for torquing main cap bolts. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
R-134a and R-1234yf are compatible with each other.
Answer the following statement true (T) or false (F)
In which way did Title VI, Section 608 of the Clean Air Act additionally regulate refrigerant technicians?
A) It banned the disposal of ozone-depleting units. B) It required that they hold a certification. C) It eliminated prior refrigerant standards. D) It limited their abilities to repair most units.
Illumination is the ____ of light reaching a task or work surface.
A. glow B. brightness C. color D. quantity