Why are variable inlet guide vanes sometimes used for supply fans?
What will be an ideal response?
Throttling the air inlet to the fan is more efficient than reducing the air flow at the fan outlet, which increases static pressure and fan power consumption.
You might also like to view...
In automated equipment, the driven machine continuously feeds back information to a master control to maintain any reasonable combination of speed and ____ desired.
a. torque b. temperature c. vibration d. pulses
Ammeters, voltmeters, and ohmmeters are all similar in construction and are modifications of a basic instrument called a(n) ____.
a. galvanometer b. magnetometer c. polarized meter d. analog meter
Which one of the following would not be a proper method of using a metal pusher:
What will be an ideal response?
The three basic types of A-CAC electrode types are copper-coated for direct current, copper-coated for
alternating current, and _____. a. plain b. low-alloy steel flux cored c. stainless steel flux cored d. nickel-coated