Pitting, blistering, and corrosion are all indicators of _____
a. mechanical failures
b. incorrect seal composition
c. improperly installed components
d. improper shaft alignment
b
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Why are capacitors useful in power factor correction?
What will be an ideal response?
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When charging systems with zeotropic refrigerants, such as R410A, the refrigerant must leave the refrigerant cylinder:
A) As a liquid. B) As a vapor. C) Under a pressure of at least 100 psig. D) As a liquid-vapor mixture.
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Discuss refrigerant system safety
What will be an ideal response?
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The CTFS harmonic function of x(t) based on one fundamental period is found to be
(a) Is the signal even, odd or neither?
Since the harmonic function is purely real, the signal is even.
(b) What is the numerical average value of the signal?
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