An insulator is a material that has free electrons available.
Answer the following statement true (T) or false (F)
False
Rationale: An insulator is a material that does not easily give up or take on electrons.
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?When setting up to make a GTA weld on low carbon steel, the tungsten should be ________ and the welding machine set for____________.
A. ?rounded, AC B. ?pointed, DCEN C. ?set 1 in. (25 mm) out of the nozzle, DCEN D. ?even with the nozzle, DCEP
When using low cutting speeds and negative rake tools to cut soft metals, the result is often:
A) A long uniform chip B) The metal splitting ahead of the tool C) A built-up edge D) A good finish
Technician A says to always use the same color grease that the vehicle manufacturer uses. Technician B says that grease color is insignificant. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
The required system capacity in tons can be determined by dividing:
A) 200 BTUs/min by the system's refrigeration effect. B) 100 BTUs/min by the system's refrigeration effect. C) 300 BTUs/min by the system's refrigeration effect. D) 600 BTUs/min by the system's refrigeration effect.