Author Question: Why do solenoid type valves pose a problem for some types of burners? A) Solenoids open and close ... (Read 59 times)

ghost! · **on:** Jul 26, 2018

Why do solenoid type valves pose a problem for some types of burners?

A) Solenoids open and close too slowly.
B) Solenoids open and close too quickly.
C) Solenoids' seal is not strong.
D) Solenoids create too much pressure when closing.

Question 2

This pipe position includes welding in flat, horizontal vertical and overhead progressions:

A) 2G B) 5G C) 6G D) 1G