When copper is being brazed to steel _____
A) the technique is identical to brazing copper to copper
B) more heat is applied to the steel fitting
C) a filler metal with a high silver content is used
D) a filler metal with a high phosphorus content is best
C
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Poodles have ranked among the top ten breeds of dogs (based on number of dogs registered) for many years. They are among the breeds requiring
A. Infrequent grooming B. Frequent grooming C. Weekly bathing D. Hand stripping of the haircoat E. B and C above
Front and rear drive shaft U-joint working angles should be within ________ degrees of each other
A) 0.5 B) 3.0 C) 1.0 D) 4.0
The most common type of demand defrost control
A) Measures the temperature difference between the coil temperature and the ambient temperature B) Senses the suction pressure C) Senses the compressor current draw D) Operates strictly on time
How many amps should a low-voltage fuse be rated for to protect the secondary of a low-voltage transformer used in a residential HVAC system?
A. 1 B. 3 C. 5 D. 7