Before attempting to use an electric meter to measure the circuits on a system, the technician should:
A) Grab a grounded surface with your free hand to give any stray electricity a good path.
B) Understand how the unit and the meter work.
C) Start with an inexpensive set of leads in case they burn up.
D) Disconnect the equipment ground wire to prevent a dangerous ground-loop circuit.
B
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Observers stationed at two sections XX and YY, 500 ft apart on a highway, record the arrival times of five vehicles as shown in the accompanying table. If the total time of observation at XX was 15 sec, determine (a) the time mean speed, (b) the space mean speed, and (c) the flow at section XX.
What will be an ideal response?
A paradigm shift involves a radical change in thinking from the accepted point of view to a
new one
Indicate whether the statement is true or false.Answer the following statement(s) true (T) or false (F)
It is very important to protect fiberglass insulation from air infiltration.
A balanced three-phase Y-source with V? = 880 V rms drives a wye-connected three-phase load with phase impedance Z?? = 80 ?, Z?? = 60+j90 ?, and Z?? = j80 ?. Calculate the line currents and total complex power delivered to the load. Assume that the neutrals are connected.
What will be an ideal response?