Explain hysteresis losses.
What will be an ideal response?
In alternating current, the direction of current is constantly changing. This means that the lines of force of the magnetic field are also changing direction repeatedly. In other words, millions of molecules reverse direction in the process of magnetizing, demagnetizing, and remagnetizing the structure of any iron core or other metallic material adjacent to the conductors of an ac circuit.
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What is meant by logical channel, and how is the concept useful? Explain.
What will be an ideal response?
The accompanying figure shows a(n) ____.
A. cleanout door B. wythe C. ash dump D. ash pit
A(n) ________ may be a braided mesh of wires or a thin metal jacket resembling aluminum foil that surrounds the conductors, and its purpose is to insulate conductors from outside electrical forces
Fill in the blank(s) with correct word
PVC pipe is rated at 62% of strength at 100 degrees F compared to its strength at 73.6 degrees. What water pressure may be used at 100 degrees for Schedule 80 pipe?
Fill in the blank(s) with the appropriate word(s).