What is the purpose of low ambient controls for air cooled condensers?
A) To maintain a maximum head pressure, even at lower than normal operating conditions
B) To control the ambient temperature
C) To maintain a minimum head pressure, even at lower than normal operating conditions
D) To increase the fan speed to compensate for low barometric pressure
C
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Which of the following materials in NOT an insulator?
A. copper B. rubber C. glass D. plastic
The cantilever beam in Figure P14.2 is supported on a spring at joint B. The spring stiffness is 10 kips/in.
(a) Compute the stiffness coefficient associated with a 1-in. vertical displacement at joint B.
(b) Compute the vertical deflection of the spring produced by a vertical load of 15 kips.
(c) Determine all support reactions produced by the 15-kip load.
If V? = 8?30° V in the circuit of Fig. 9.59, find Vs.
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A computer must recognize codes that represent letters of the alphabet, punctuation marks, and other special characters as well as numbers. What is this code called?
A) American Standard Code for Information Interchange B) Straight Binary Code C) Encoding D) Alphanumeric Code