Author Question: How will two permanent bar magnets react if they are brought close to each other? A) They will ... (Read 59 times)

cartlidgeashley · **on:** Jul 28, 2018

How will two permanent bar magnets react if they are brought close to each other?

A) They will attract if their north poles are together.
B) They will attract if their south poles are together.
C) They will attract if the north and south poles are together.
D) They will repel if the north and south poles are together.

Question 2

If the contacts fail to open when a relay is de-energized, what is the trouble?

A) Dirt is causing the relay armature to stick.
B) There is too little current in the relay coil.
C) The return spring tension is too large.
D) There is no trouble. The relay is operating normally.