Explain the difference between structural concrete and insulating concrete.
What will be an ideal response?
Structural concrete is used in structural components, such as columns, beams, slabs, and so on. Insulating concrete is used on relatively flat (low-slope roofs) as insulation. It is made of foamed concrete, i.e., Portland cement and water paste that is foamed with air. The density of insulating concrete is 30-50 lb/cft.
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To limit impedance, which of the following should be sized at 10kVA or less?
a. Isolation transformer b. Stepdown transformer c. Utility transformer d. Dry-type transformer
Explain the difference between a decorator's bow and a pinch bow. When would
use choose one over the other when decorating an arrangement?
What will be an ideal response?The op amp non-inverting amplifier uses ____ that provide negative feedback to control the op amp voltage gain.
a. capacitors b. transistors c. wires d. resistors
Technician A says that each coil spring is specifically engineered to be installed on one particular side of the vehicle. Technician B says that rubber spring pockets prevent excessive noise. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician