If the phase angles of two sine waves are both 00, then the waves _____.
a. are in phase
b. are 90 out of phase
c. have the same peak voltage
d. have the same amplitudes
a. are in phase
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Technician A says cupped wear and bald spots on the tire tread may be caused by dynamic imbalance. Technician B says chassis waddle may be caused by static imbalance. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Most florists do not charge for deliveries to funeral homes and hospitals because
a. of the large volume of flowers c. it would be considered tacky b. of the delicacy of the situation d. all of the above
Water and air leakage between the rooftop unit and the rooftop curb are prevented by:
A) UL-rated duct tape applied from the inside of the curb. B) UL-rated duct tape applied over the outside of the curb. C) UL-rated duct tape applied to both the inside and outside of the curb. D) Gasket material between the curb and the unit.
In what year did it become unlawful to knowingly vent CFCs and HCFCs?
A. 1987 B. 1992 C. 1994 D. 1996