____ products include glass that changes properties electronically via an electric current, and glazing with blinds between glass layers that control light and heat.
A. Solar glazing
B. Double-glazed
C. Tubular daylighting
D. Dynamic glazing
Answer: D
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Answer the following statement(s) true (T) or false (F)
1. Motors and generators are look-alikes with their armature, field poles, commutators, and such, and where they differ is in the opposite application of electromagnetism. 2. The generated emf is a measure of the useful mechanical energy obtained from the neutrons passing through the armature. 3. Wave windings require only four parallel paths through the armature in one complete wave winding, regardless of the number of brushes. 4. To counteract the warping of the magnetic field, large AC motors are often built with interpoles, or commutating poles. 5. When the torque increases to meet the new load demand, the speed will readjust itself; thus, the motor maintains a fairly constant speed.
Heinrich's Domino theory has two central points:
A. Injuries are caused by the preceding factors. B. Removal of the unsafe act or hazardous condition prevents accidents and injuries. C. Both a and b are the central points in the Domino theory.
The percentage of heat rise in the motor caused by the voltage unbalance is equal to ____ times the percent squared.
A. two B. three C. four D. five
Datums are always required for ____.
A. straightness B. circularity C. profile of a line D. position