How often should a low-efficiency panel filter be changed?
A) Weekly B) Quarterly
C) Monthly D) Once or twice a year
C
Trades & Technology
You might also like to view...
Which of the following is best adapted to dry conditions?
a. white clover c. alfalfa b. red clover d. sainfoin
Trades & Technology
A 2-in-diameter spherical ball whose surface is maintained at a temperature of 170°F is suspended in the middle of a room at 70°F. If the convection heat transfer coefficient is 15?Btu/h•ft2•°F and the emissivity of the surface is 0.8, determine the total rate of heat transfer from the ball.
What will be an ideal response?
Trades & Technology
The __________ is the conductor used to connect the system grounded conductor to a grounding electrode.
a. grounding electrode conductor b. grounding conductor c. neutral conductor d. service conductor
Trades & Technology
What is "Calibration?
What will be an ideal response?
Trades & Technology