What is the direction of lay required based on the symbol shown in Figure 5?
a. Parallel
b. Perpendicular
c. Radial
d. Multidirectional
e. None of the above
b. Perpendicular
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Rooftop units should not be installed in close proximity to exhaust vents or industrial processes that create fumes because:
A) The heat from the rooftop unit might cause down drafts. B) The exhaust might stain the side of the unit. C) The exhaust can be pulled into the unit's outdoor air intake. D) The roof supports are weaker near the vents.
A squirrel-cage rotor induction motor has a synchronous speed of 3600 RPM and an actual rotor speed of 3450 RPM. What is the percent slip?
A. 4.17% B. 4.35% C. 24% D. 23%
Describe Hooke's Law.
What will be an ideal response?
For the power system in Fig. 11.67, find: (a) the average power, (b) the reactive power, (c) the power factor. Note that 440 V is an rms value.
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