Los dos esquemas de cableado definidos en las normas TIA/EIA están definidos como esquemas
a. A y B.
b. A y C.
c. B y C.
d. C y D.
a. A y B.
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Ball bearings have more friction than roller bearings but can operate at higher speeds.
Answer the following statement true (T) or false (F)
What color is the American alligator?
A) brown B) dark yellow C) green D) black
A cylindrical wire of radius R elongates when subjected to a tensile force F. Let 
represent the initial length of the wire and let 
represent the final length. Young’s modulus for the material is given by
Assume that F = 800 ± 1 N, R = 0.75 ± 0.1 mm, = 25.0 ± 0.1 mm, and = 30.0 ± 0.1 mm.
a. Estimate Y, and find the uncertainty in the estimate.
b. Of the uncertainties in F, R,, and , only one has a non-negligible effect on the uncertainty in Y. Which one is it?
Answer the following statement(s) true (T) or false (F)
1. Engineers shall act for each employer or client as faithful agents or trustees. 2. Engineers may not be required to follow the provisions of state or federal law when such actions could endanger or compromise their employer or their client's interests. 3. Engineers shall not reveal facts, data or information without the prior consent of the client or employer except as authorized or required by law or this Code. 4. Engineers shall undertake assignments only when qualified by education or experience in the specific technical fields involved.