What PSI level is the safety relief valve set to open at
A. 150 psi
B. 125 psi
C. 60 psi
D. 100 psi
Ans: A. 150 psi
A safety relief valve is installed in the first tank that the air compressor pumps air into. A safety valve protects the tank and system from too much pressure by opening up at 150 psi.
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a. only on the piping b. on all components c. only on the boiler d. only at the air handling unit
When referring to motors, to what does the "insulation class" relate?
A. the noise level of the motor B. the type of base on which the motor is mounted C. the normal operating temperature of the motor D. both a and b
Survey data suggest the trip interchange matrix shown below. Calibrate the friction factors for one iteration, assuming travel times are 2.0 minutes for interzonal trips and 1.0 minute for all intrazonal trips. Assume the friction factor takes the form t-b.
What will be an ideal response?
Traditional clothes dryers work by ____: heated air removes the moisture from the clothes.
A. convection B. conduction C. reduction D. induction