The height at which a 24-foot ladder strikes a wall is found by the formula _____.
a. tan angle = side adjacent/hypotenuse
b. sin angle = side opposite/hypotenuse
c. sin angle = side adjacent/side opposite
d. cos angle = side opposite/hypotenuse
b. sin angle = side opposite/hypotenuse
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Which of the following is true regarding high-voltage hazards?
a. The use of digging equipment is unlikely to present an electrical hazard. b. Power lines are not a hazard unless you come into physical contact with them. c. The minimum approach distance for overhead lines is 25 feet or greater until the line voltage is verified. d. It is not necessary to contact the local utility when working near overhead lines.
Dogs and cats have excellent means of dissipating heat. Therefore, they can be left in closed parked cars with ambient temperatures up to 100ºF while their owner shops for groceries with minimum concern about possible heatstroke
A. True B. False
Where can a technician find diagnostic procedures to troubleshoot an electrical problem?
A) Lubrication guide B) Service manual C) Owners manual D) None of these
A system that uses the space above a drop ceiling for return air is called
A) a spatial air distribution system B) a drop ceiling return system C) a static regain system D) an extended plenum system