Why are torque to yield bolts always replaced after they have been used?
Due to the bolt stretching after torqueing it down, it now cannot be tightened down again with the original bolt and must be replaced.
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The _____ is the most frequently used cutting tool.
A. trowel B. brick hammer C. brick set chisel D. concrete hammer
____ are used where data need to be maintained for later use, such as the custom guide in a television satellite system.
A. EEPROMs B. PROMs C. SRAMs D. DRAMs
Why would a temperature-differential defrost system NOT complete the defrost cycle?
A) There is a refrigerant undercharge. B) The system defrosts too frequently. C) The fan blows warm air across the coil. D) There is too much heat available during defrost.
A series circuit has a total resistance of 180 ? and an applied voltage of 120 V. What is the current flow?
A. 300 A B. 1.5 A C. 60 A D. 0.667 A