How do you test a two terminal LED?
What will be an ideal response?
Testing a two-terminal LED is easy. First, set your DMM to the diode setting. Connect the positive lead of your meter to the anode (longer) lead of the LED, and then connect the negative lead of your meter to the cathode of the LED. If both leads are the same length, then look for a flat edge on the LED dome; the lead closest to this flat edge is the cathode. The LED should glow. If the LED does not give off light, it is open and needs to be replaced.
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A double-layer roof underlayment is required in an asphalt shingle roof if the roof slope is _______.
A) between 3:12 and 5:12. B) between 3:12 and 9:12. C) between 3:12 and 4:12. D) between 3:12 and 6:12. E) none of the above.
Most of the diseases that affect deciduous shrubs are caused by _____
A) bacteria and fungi B) fertilizer C) water D) ticks and mites
What is the best way to prevent or minimize insect and mite pest populations from developing resistance to pesticides (insecticides and miticides)?
What will be an ideal response?
_____________ use a thin-walled, slightly elliptical, cross-sectioned tube bent in a C shape, which is tied directly to the system, to read pressure.
A. Bourdon tube gauges B. Bellows gauges C. Diaphragm gauges D. Pressure relief valves