Ramsay Test Piping and Plumbing

Question 1

Which fitting is used to connect two pipes of different diameters in a straight run?

Accepted Answer

Reducer or reducing bushing

Answer

Elbow

Answer

Tee

Answer

Union

Question 2

What is the function of a check valve in a piping system?

Accepted Answer

To allow flow in one direction only and automatically prevent backflow

Answer

To regulate flow to a precise set rate

Answer

To relieve excess system pressure to atmosphere

Answer

To isolate a section of pipe for maintenance

Question 3

Pipe schedule numbers (Schedule 40, Schedule 80, etc.) refer to:

Accepted Answer

The wall thickness relative to the pipe's nominal size

Answer

The outside diameter of the pipe

Answer

The material grade or alloy of the pipe

Answer

The maximum allowable operating temperature

Question 4

When applying Teflon (PTFE) tape to NPT (National Pipe Taper) male threads, the tape should be wrapped:

Accepted Answer

Clockwise when viewed from the threaded end — the same direction as thread engagement

Answer

Counter-clockwise regardless of thread orientation

Answer

In either direction — orientation does not affect sealing

Answer

Clockwise for 1 full wrap only, regardless of thread count

Question 5

A technician hears repeated banging in a piping system whenever a solenoid valve closes quickly. This condition is called water hammer. The best corrective action is to:

Accepted Answer

Install a water hammer arrestor or replace the valve with a slow-closing type

Answer

Increase system operating pressure to suppress the pressure wave

Answer

Replace all elbows with tee fittings to reduce flow velocity

Answer

Upgrade pipe to a higher schedule throughout the affected run

Question 6

What is the primary maintenance advantage of installing a union fitting in a piping system?

Accepted Answer

It allows the joint to be broken and reassembled without cutting or rotating the pipe

Answer

It increases the rated pressure of the pipe joint

Answer

It reduces turbulence and friction loss at the connection point

Answer

It automatically compensates for thermal expansion in the pipe run