Question

An appurtenance whose length generally does NOT exceed three times its diameter is called

• A. a non-return valve
• B. a diffuser
• C. an orifice
• D. a mouthpiece

Answer 1

Answer:

D. a mouthpiece

A mouthpiece is an extended form of an orifice and can be fitted to increase the discharge through an orifice. It is an appurtenance whose length is generally 2-3 times its diameter and is used to determine the rate of fluid flow.