Which of the following are often used in conjunction with time clocks to turn off lighting when it is no longer needed?
a. Sound sensors
b. Occupancy sensors
c. Photosensors
d. Ultrasonic sensors
c. Photosensors
You might also like to view...
If a compressed-air tool functions poorly because of low air pressure, the cause is most likely _____.
a. working at too great a distance from the compressor b. an undersized air receiver c. an improperly secured hose or coupling d. a sticky air throttle valve
Since the evaporator absorbs both sensible and latent heat, humidity must be taken into account and considered part of the load on the evaporator.
Answer the following statement true (T) or false (F)
Spores send tubes called ____________________ down into the leaf to extract nutrients
Fill in the blank(s) with correct word
Technician A says that changing connecting rod length changes engine stroke. Technician B says that changing connecting rod length changes the position of the piston in the cylinder. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B