La mejor manera de describir el blindaje externo de un cable de voltaje medio es que se trata de:
a. una capa semiconductora debajo de una capa metálica.
b. una capa metálica debajo de una capa semiconductora.
c. una capa metálica junto a los conductores que transportan la corriente.
d. polietileno combinado con caucho de etileno propileno.
a. una capa semiconductora debajo de una capa metálica.
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In specifying a wood roof truss for a project, its slope, overall geometry, and the loads imposed on it are determined by the architect in consultation with the structural engineer. The structural design of the truss is, however, not done by the project's structural engineer. Who, then, prepares the structural design of the truss, and what is the role of the architect and the project's structural
engineer after the truss design has been completed? What will be an ideal response?
What is the main purpose of trap seals?
What will be an ideal response?
Air/mist coolant in grinding applications:
A) Excessively limits the visibility of the operator B) Is of limited value and only can be used in a few situations C) Require extensive supply and return lines D) Requires adequate ventilation of the work area
In which of the following applications would fiberglass duct not be acceptable?
a. Kitchen exhaust ducts b. Supply air ducts for an oil-fired furnace c. Supply air ducts for a gas-fired furnace d. Vertical risers in a single-story home