Author Question: To avoid electrical shock, technicians should: A) Make sure the unit is grounded. B) Make sure ... (Read 78 times)

Bernana · **on:** Jul 24, 2018

To avoid electrical shock, technicians should:

A) Make sure the unit is grounded.
B) Make sure they are not grounded and the unit is grounded.
C) Make sure they are grounded.
D) Make sure they are not grounded.

Question 2

A variable frequency drive is a system for controlling the rotational speed of an electric motor by:

A) Controlling the frequency of the power supplied to it.
B) Controlling the voltage amplitude supplied to it.
C) Varying the load applied to it.
D) Varying the current flow to it.