Technician A says that a rotary screw compressor has a 100 percent duty cycle. Technician B says that a rotary screw compressor can produce air at about one-half the temperature of piston-compressed air. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
C. Both Technicians A and B
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What is the total pulling tension when pulling a cable weighing 5 pounds per foot through a 500' conduit with a coefficient of friction of 0.35?
a. 176.75 b. 180 c. 875 d. 7,142
Joints that allow free movement and have a fluid-filled cavity are called _____ joints
a. synovial c. fibrous b. amphiarthroses d. synarthroses
Which of the following statements is LEAST-Likely true?
A. During hard acceleration, the front of the vehicle lifts and the rear lowers. This is called squat. B. An active suspension system works with sensors, a computer, and activators to solve problems. C. An active suspension requires conventional shock absorbers or springs. D. Sensors provide the computer with necessary information regarding extension and compression of each actuator and how heavily the vehicle is loaded.
Why might closing the oxygen cylinder, then the acetylene cylinder, then bleeding first the oxygen line, then finally the acetylene line at the end of a brazing project create a hazardous situation?
A) The acetylene and oxygen cylinders should be closed simultaneously. B) The last gas to go through the torch will be a flammable gas. C) The acetylene and oxygen lines should be bled simultaneously. D) The acetylene cylinder should be closed first.