What are indicators of excessive heat?
What will be an ideal response?
ANS:Excessive
heat is indicated by gourd-shaped marks; the electrode covering turns brown; the bead does
not have clear markings; the puddle burns through the plate; it is difficult to manage the puddle; and
the arc is very noisy.
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____________________ are definable tasks that support the goals of a project.
Fill in the blank(s) with the appropriate word(s).
Which of the following is an example of forced convection?
A) A radiant heater placed in a room B) Air moving in a refrigerator C) A ceiling fan forcing warm air down D) Heat traveling along a metal rod
The preferred method for raising the pressure of a low-pressure chiller in order to test for leaks is:
A) Charging the chiller with R-410A. B) Adding nitrogen to the evaporator. C) Circulating warm water through the chiller. D) Adding more refrigerant.
Match each item with a statement below.
A. logical negation operator B. matches exactly one character, except for the backslash and period C. environment variable that contains the file name containing commands to initialize the shell D. environment variable that holds the primary shell prompt E. environment variable that identifies the path name for user's home directory F. environment variable that holds the path name of the program for the type of shell you are using G. environment variable that holds the list of path names for directories searched for executable commands H. bitwise negation operator I. environment variable that contains the absolute path to the Bash shell, such as /bin/bash