Some motors are constructed so that they will operate on either of two voltages. When they are connected to operate on the lower of the two voltages, the windings are connected in _____.
A. series
B. parallel
Answer: B
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Hot steam that comes in contact with condensate that has cooled below the temperature of the steam may cause _____.
a. condensate drainage b. steam flash c. water hammer d. lower pressures
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The ____________________ is the heart of an oil burner control system and supervises the operation of the oil burner.
Fill in the blank(s) with the appropriate word(s).
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Why is condensation inside a motor problematic?
What will be an ideal response?
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What are a ball penetrator and a diamond penetrator used for?
A) A Rockwell "A" and a Rockwell "B" hardness test B) A Rockwell "C" and a Rockwell "D" hardness test C) A Rockwell "D" and a Rockwell "E" hardness test D) A Rockwell "B" and a Rockwell "C" hardness test E) None of the above
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