Author Question: The operator of an electrical switch is the part of the switch that ________. A) conducts current ... (Read 270 times)

lindiwe · **on:** Jul 26, 2018

The operator of an electrical switch is the part of the switch that ________.

A) conducts current
B) is the same as the contacts
C) causes the action that makes the switch change from open to closed or closed to open

Question 2

In order to facilitate air removal, a diaphragm-type expansion tank should be placed:

A) On the discharge side of the boiler. B) Above the boiler, below the roofline.
C) On the supply aide of the boiler. D) Above the highest terminal unit.