What is the main safety concern for any type of gas-fired room heater?
A) They are dangerous if used as a drying rack for wet clothing.
B) The space where they are installed must have sufficient infiltration to supply the necessary combustion air.
C) They will overheat if the ductwork is undersized.
D) The electrical wiring to the unit must be heavy gauge to accommodate a high current draw.
B
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A section of a spur gear is shown in the accompanying figure. Tooth thickness = 0.5 x Circular pitch. What is the tooth thickness in inches if the circular pitch is 0.9638 inches? Round to four decimal places.
A. 0.4692 B. 0.4798 C. 0.4819 D. 0.5289
Give an example of two parts that would require a running-and-sliding fit. A force fit
What will be an ideal response?
A (An) ________ is connected hydraulically to the clutch or band servo, and absorbs fluid during the pres- sure build-up stage when a clutch or band applies.
A) Check valve B) Shift solenoid C) Orifice D) Accumulator
The NEC contains provisions that are considered ______.
What will be an ideal response?