Input accessories receive and transmit information to the logic section of the control, such as a relay or ____.
a. amplifier
b. transistor
c. contactor
d. starter
b. transistor
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MSDS is the abbreviation for __________________.
Fill in the blank(s) with the appropriate word(s).
Why is a pressure regulator necessary when using nitrogen cylinders?
A) The nitrogen must be carefully controlled because it is toxic. B) To boost the pressure leaving the nitrogen cylinder high enough to be used C) Because the nitrogen is extremely expensive and must be carefully rationed D) To reduce the pressure in the nitrogen cylinder to a safe level
What must an architect consider when selecting stone to be used in a building?
What will be an ideal response?
Long flare nuts should be selected when _____.
a. vibration is anticipated b. flaring tubing larger than 1/2 inch c. the tubing has been cut slightly short d. the flare joint is leaking