The outside diameter of schedule 40 black iron pipe is ...

[Tazate]

The outside diameter of schedule 40 black iron pipe is approximately:
 
  A)  inch larger than the pipe's nominal size. B) The same size as the pipe's nominal size.
  C) 1/8 inch larger than the pipe's nominal size. D) 3/16 inch larger than the pipe's nominal size.

Question 2

How can water-tubing fouling be prevented in tube-and-shell water-cooled condenser systems?
 
  A) Through annual draining of the water, removing access plates, and running brushes through the water tubes
  B) Through a monthly external scrubbing with bleach
  C) Through annual draining and replacement of the water in the condenser and annual chemical treatment of the water
  D) Through annual chemical treatment of the water

[Cnarkel]

Answer to Question 1

A

Answer to Question 2

A

[Tazate]

Excellent

[kjohnson]

Gracias!