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 sensor
c. Photosensors
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LC and ____ oscillators are used in the radio frequency (RF) range.
A. relaxation B. blocking C. RC D. crystal
The estimator must decide whether to replace or repair a part. The labor time required to repair the part is 9.0 hours plus an additional material cost of $65.00. The new part will cost $625.00, and the allowable flat rate time is 2.0 hours to replace the new part. The labor rate is $45.00 per flat rate hour. Which is the more cost-effective repair?
What will be an ideal response?
Type K tubing is used for _____ applications.
a. residential plumbing b. underground and high-pressure c. refrigeration d. highly acidic
Determine the saturation flow rate for a left-turn lane that operates in a permittedonly mode, under the following conditions:
Opposing demand flow rate = 1100 veh/h Lane width = 11 ft Heavy vehicles = 3% of the traffic stream Approach grade = –2% No on-street parking No bus stops Bicycle and pedestrian traffic conflicting with this lane group is negligible Intersection is not in a central business district What will be an ideal response?