A(n) ____ is an accessory, such as a locknut or bushing, whose function is primarily mechanical, rather than electrical, in nature.
A. ancillary
B. fitting
C. offshoot
D. conductor
Answer: B
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Which of these is an animal protein commonly used in livestock feed?
a. blood meal c. whole milk b. protein derived from rendering d. all answers
A hair dryer is basically a duct in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it to flow over the resistors, where it is heated. Air enters a 1200-W hair dryer at 100 kPa and 22°C and leaves at 47°C. The cross-sectional area of the hair dryer at the exit is 60 cm2. Neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
What will be an ideal response?
The diac is similar in operation to a PN junction diode, except that the diac conducts current ____.
a. in high power b. in both directions c. in DC only d. in AC only
Soot forming in the heat exchanger can be caused by
A) the presence of coal tar in the gas B) Too much gas in the gas air mixture C) Too much air in the gas air mixture D) Excessively high combustion temperatures