Heartwood is inactive, rigid tissue
Indicate whether the statement is true or false.
T
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Three factors that are required to be present for electro-magnetic induction to occur are an electrical conductor, magnetic lines of flux and ____.
a. relative motion between the two b. turns of wire c. current flow d. magnetic field
The unit of light that is emitted from a light source is called a ___________________.
Fill in the blank(s) with the appropriate word(s).
The air filter should be checked:
A) While collecting operational data. B) During the preliminary inspection. C) When testing to isolate the cause of the system malfunction. D) After completion of the service call.
The travel angle created when the torch is tilted backward so that the tip precedes the torch body in the direction of the weld is called a _____
A) drag angle B) neutral angle C) pull angle D) push angle