When flex duct is hung or run over long distances it must be supported every _____ft with some sort of noncrimping hanger
A) 10 B) 20 C) 15 D) 5
D
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Early industrial machines vastly outperformed human counterparts in which of the following areas?
a. efficiency and productivity b. durability and maintenance costs c. adaptability and flexibility d. precision and accuracy
What happens to the output signals of the conversion in an ADC interface module?
A) Both analog and digital output signal will be routed to an I/O, which can be interfaced to other devices. B) The analog output signal will be routed to an I/O connector, which can be interfaced to other devices. C) The digital output signal will be routed to an I/O connector, which can be interfaced to other devices. D) all of the above
The ratio of how much light is produced by a lamp (in lumens) to how much energy is consumed by the lamp (in watts) is known as
a. efficacy b. efficiency c. illumination cost d. energy cost
A column of water one foot high exerts a pressure of ____.
A. 0.396 psig B. 0.407 psig C. 0.433 psig D. 0.496 psig