What type of valves are designed to receive high pressure at the inlet and automatically maintain a constant lower pressure at the outlet?
A. open-close
B. flow regulation
C. relief
D. automatic pressure reducing
Answer: D
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A green LED maintains a constant VLED = 2V independent of the current ILED flowing through it. The LED connects to supply VS = 5V through resistor RL = 470? to produce current ILED= ____ (x.x) mA.
Fill in the blank(s) with the appropriate word(s).
A polyphase synchronous motor has three stator windings that are _____.
a. 45° apart b. 90° apart c. 120° apart d. 180° apart
Identify three different, real organizations that have made sustainability an explicit consideration in their operations.
What will be an ideal response?
Two types of shaft seals used for centrifugal pumps are ____.
A. stuffing box and mechanical types B. stuffing box and splash types C. ceramic and splash types D. ceramic and bellows types