List two ways that internal and external threads may be represented on mechanical drawings.
What will be an ideal response?
Internal and external threads may be represented on mechanical drawings by one of several methods: (1) a pictorial representation, which shows the threads as they appear to the eye, (2) a schematic representation, or (3) a simplified representation. Figure 19-5 shows how each type of external thread can be represented.
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Los aislamientos de tubería con traslapos autoadhesivos _____.
a. se aplican a superficies húmedas. b. se unen tanto como sea posible c. se almacenan en un lugar húmedo para evitar que el adhesivo se seque d. tienen traslapos que deben lijarse con una herramineta de frotado después de la instalación.
When it is required for the follower to rise and fall at a uniform rate, ____ is used.
A. constant velocity motion B. simple harmonic motion C. Straight line motion D. both a and c E. none of the above
____ assist the beginner in keeping all the letters shaped correctly and spaced properly.
A. Angle dimension lines B. Angle reference marks C. Angle construction lines D. Angle guide lines
An alternator could test as producing lower-than-normal output, yet be okay, if the _________
A) Engine speed is not high enough during testing B) Battery is weak or defective C) Drive belt is loose or slipping D) Any of the above