A pressure switch is drawn by connecting a ____ to a line.
A. rectangle
B. square
C. semicircle
D. triangle
Answer: C
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Which of the following is a personal safety precaution you should follow with regard to furnaces?
A. Stand directly in front of the furnace when opening the inspection door. B. Limit contact with the control room operator. C. Always wear long sleeves. D. Always wear flammable clothing when required.
When determining the polarization index on a 460V motor, which of the following test voltages should be applied between the winding and ground?
a. 400VDC b. 500VDC c. 800VDC d. 1,500VDC
The force that causes electrons to move from atom to atom in a conductor is called __________.
a. amperage b. ohms c. voltage d. watts
Coolants may be divided into two groups, the mineral and animal oils and the:
A) Air coolants B) Water soluble oils C) Lubricants D) Refrigerants