What protective devices do electric furnaces typically have?
A) Phase loss monitors
B) Fusible links and thermal overloads in series with the heating elements
C) Magnetic overload relays
D) Pilot duty thermal overload relays
B
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What should be monitored to determine when a filter needs to be taken offline for cleaning or replacement?
A. Flow rate B. Temperature of liquid C. Differential pressure D. Water quality
If two 9 V batteries were connected in series (negative to positive) and a third battery was added in series (positive to negative) the total voltage would be
A) 9 V. B) 4.5 V. C) 18 V. D) 0 V.
The magnetic term that is equivalent to voltage is ________
A) flux density B) magnetomotive force C) reluctance D) current
How many blocks are needed to construct a wall that measures 24' long and 10' high if the area of the wall opening is 36 square feet? Round the answer to the nearest whole number.
What will be an ideal response?