Technician A says that the same stud welder can be used to attach pulling studs to steel and aluminum panels. Technician B says that aluminum requires a capacitor discharge welder to attach pulling studs. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
B. Technician B only
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The width of a(n) ____________________ stock does not exceed 8 inches.
Fill in the blank(s) with the appropriate word(s).
Underwriters Laboratories standard 181 B covers:
A) Methods of connecting and sealing all types of duct. B) Methods of connecting and sealing metal duct. C) Methods of connecting and sealing flexible duct. D) Methods of connecting and sealing ductboard.
Compared to reciprocating compressors, centrifugal compressors:
A) Can operate at higher compression ratios. B) Can move a larger volume of refrigerant. C) Can work effectively on smaller systems. D) Can operate against higher head pressures.
The magnetic fields generated in the rotor and stator of a motor causes the rotor to be pushed around the shaft.
Answer the following statement true (T) or false (F)