General Purpose Acme threads:
A) Generally have very poor finishes so fits are not important
B) Have the same clearance at the root and the flank
C) Bear at the major diameter
D) Bear at the flanks
D
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High-pressure gas cylinder valves have two valve seals: a main seal and one ____ to prevent gas leaks.
A. rubber seal B. back seal C. tight seal D. seating seal
At what speed must a four-pole generator rotate to develop a frequency of 100 Hz?
What will be an ideal response?
If the generators are asynchronous, then the control mode may be ____________________ mode, variable slip mode, or variable slip with DFIG mode.
Fill in the blank(s) with the appropriate word(s).
20 Vrms of alternating current will illuminate a given lamp at the same intensity as 20 V of direct current
Indicate whether the statement is true or false