A Category IV operates with
A) a low temperature, negative pressure vent B) a low temperature, positive pressure vent
C) a high temperature, positive pressure vent D) a high temperature, negative pressure vent
B
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Which of the following could be a result of regenerator cyclone failure?
A. Fire B. Injury C. Off-spec product D. Economic impact
Ducts over 60 inches wide must be supported with _____.
a. channels b. trapeze hangers c. strap hangers d. heavy gauge wires
According to NEMA definitions, which of the following is a type of open motor?
a. Nonventilated b. Explosion-proof c. Weather-protected d. Water-to-air-cooled
The subsequent problems deal with the circuit shown below. Assume that the diode is ideal (i.e., has a 0V forward bias voltage).
If V1 = 0V (short), V2 > 0, and R1 = R2 = R, what is Vd?
A. V2 / 2 B. V2 C. ?V2 / 2 D. 0 E. ?V2