PLEASE HELP What do we call the void or groove left along the edge of the weld bead do to improper welding techniques?

By changing the of the electrode, the arc force can change the weld bead build up.

What is the recommended amperage range for a ⅛” 6010/6011 electrode?

The welder makes what adjustment as they are welding to change the size of weld that they are producing?

Approximately how long does it take to burn a ⅛” 6010 electrode?

The welder uses a higher or lower amperage when welding on thick materials?

answer:

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A Carnot heat engine receives heat from a reservoir at 900$^\circ{}$C at a rate of 800 kJ/min and rejects the waste heat to the ambient air at 27$^\circ{}$C. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at -5$^\circ{}$C and transfers it to the same ambient air at 27$^\circ{}$C. Determine (a) the maximum rate of heat removal from the refrigerated space and (b) the total rate of heat rejection to the ambient air. Answers: (a) 4982 kJ/min, (b) 5782 kJ/min