What does the arc length indicate about the skill of the welder?
What will be an ideal response?
The arc length indicates the skill with which the electrode is fed as it burns away.
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In the brushless DC exciter, the commutator of a conventional direct-connected exciter is replaced with a threephase, bridge-type, ____.
a. solid-state rectifier b. controlled rectifier c. direct transformer d. small rectifier
Explain what the I-V curve represents.
What will be an ideal response?
In a series circuit, total resistance is determined by:
A) Adding the sum of all individual resistances. B) Dividing resistance into amperage. C) Dividing voltage into the current. D) Total resistance cannot be determined in a series circuit.
A thermostatic expansion valve system operating with a refrigerant undercharge will have:
A) A high system subcooling. B) A low superheat. C) Higher than normal compressor amp draw. D) A low system subcooling.