The speed of a synchronous motor can be varied within a given range by adjusting the resistance of the starting resistor connected to the rotor.
Answer the following statement true (T) or false (F)
True
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Fewer weld craters occur in continuous welding and it is much faster.
Answer the following statement true (T) or false (F)
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Some techniques supervisors can use to prevent accidents on their job sites
How is the refrigerant charge normally checked on air-conditioning systems that use a fixed orifice expansion device?
A) Feel to see if the suction line is cold and the liquid line warm. B) Subcooling C) Adjust the charge to achieve a 40°F saturated evaporator temperature. D) Superheat
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Thermal shrinking acting on a heat-affected zone that has become embrittled is a common cause of _____
a. toe cracks b. undercut c. porosity d. underbead cracking
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