Bimetal strip type overload relays can often be adjusted for a higher setting to offset the problem of ____.
a. low noise
b. ambient temperature
c. moisture
d. excessive wind
b. ambient temperature
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Urban development of land under natural vegetation or agriculture usually greatly ________ soil infiltration capacity and therefore greatly increases ________
A) decreases; groundwater recharge. B) decreases; stream bank erosion. C) increases; stream bank erosion D) increases; groundwater recharge.
In most commercial air handlers:
A) The air passes through the unit twice: once for the blower and another time for the coil. B) The blower forces the air across the coil. C) The blower draws the air across the coil. D) The blower and coil are located in separate component parts of the system.
In general, the first step in troubleshooting a pump is to ________
A) inspect the pump installation for any leaks B) verify that all the mounting bolts are tight C) inspect the belts and pulleys on the pumps D) inspect for excessive buildup of dirt and debris
How are modules/controllers identified on a data bus?
A. With pre-programmed electronic id tags. B. With a unique bus address. C. By the connectors bus address. D. Using dip switches set by the service technician.