What do we have to be careful of when venting pneumatic power and how do we avoid these dangers?
What will be an ideal response?
When we vent the used air, we need to be careful of two things, one it is often
a very loud process and two we need to watch for small particles that can become
airborne due to the pressure of the escaping air. Use a muffler.
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Jobs can be found on want ____.
a. ads b. posters c. mailings d. calls
Why must an arcing device be contained within a special enclosure?
a. To prevent the ignition of hazardous vapors b. To keep out dust and protect the device c. To allow gases and vapors to enter the conduit system d. To lock out any unauthorized users of the device
Si están presentes una tubería de agua fría, una pica de tierra clavada y un anillo de toma de tierra en el emplazamiento de un edificio, _____ deben unirse entre sí para formar el sistema de electrodo de tierra.
a. la tubería y la pica de tierra clavada b. dos cualquiera de ellos c. todos ellos d. todos ellos, más un electrodo de tierra adicional
____ are caused by voltages induced into the conductors and other surrounding metal parts.
A. Hysteresis currents B. Skin currents C. Dielectric currents D. Eddy currents