What is the name of a figure formed by two radii and the arc intercepted by the radii?
Fill in the blank(s) with the appropriate word(s).
sector
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A portable circular saw has _____.
a. a fixed (non-adjustable) baseplate b. retractable lower and upper blade guards c. a retractable upper blade guard d. a retractable lower blade guard
Explain why the use of GMA welding can help reduce waste of filler metals.
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. The relation of direction of motion of the wire in a field to direction of induced emf can be determined by Fleming’s right-hand rule. 2. An alternate way of stating Lenz’s law is that an induced voltage or current opposes a change of magnetic field. 3. When mechanical energy must be expended to rotate a coil within a magnetic field and cut the lines of flux, this energy is provided by engines called flux movers. 4. Not all generators are designed to maintain coils within a magnetic field but, instead, hold a magnet within a rotating coil. 5. The induction process in rotating machines produces AC, and if direct current (DC) is needed, it can be obtained from AC by using rectifiers.
A technician finds that a wire in an electric furnace is brittle and discolored from overheating. The technician should:
A) Cut off the overheated end, strip the remaining wire end, and reinstall it. B) Cut off the overheated end and splice on a short length of similar wire using high-quality electrical tape. C) Replace the entire wire. D) Cut off the overheated end and add a short length of similar wire using a wire nut.