Explain how a snap action micro switch for an air flow switch works.
What will be an ideal response?
A metal arm is attached to the micro switch. A piece of thin metal or plastic is connected to the metal arm. The thin piece of metal or plastic has a large surface area and offers resistance to the flow of air. When a large amount of air flow passes across the sail, enough force is produced to cause the metal arm to operate the contacts of the switch.
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Why do you have difficulty in using your cell phone inside an elevator?
What will be an ideal response?
Which type of gear may be found in a rear-wheel-drive axle?
A) Spiral bevel B) Spur C) Hypoid D) Helical
How were the growing social class divisions in large American cities reflected in the provision of different forms of art, music, and recreation for the elite and the masses?
What will be an ideal response?
When wiring a house with a conduit wiring method, a __________ insulated wire cannot be used in a traditional switch loop as a “hot” ungrounded conductor.
a. red b. white (re-identified) c. blue d. black