Steamfitter/Pipefitter Exam – Second Period

Which of the following gases will have the highest BTU/Cubic foot rating?

Butane gas will have the ____ compared with manufactured gas, natural gas and propane gas.

A gas range burner top is a residential appliance that would most likely not have a ____.

Which of the following scenarios would most likely be due to a undersized gas line?

With regards to a pilot the term “____” is used to describe a condition where the main burner ignition does not occur within 4 seconds.

It is recommended procedure 3 to 4 minutes after lighting the pilot in a open circuit test to ____.

Comparing the operation of a thermocouple to a thermopile, a thermopile creates a ____.

A(n) ____ is a device that can be used to measure low gas pressures.

Propane tends to release energy approximately 2.5 times greater then which other gas?

If a pilot flame is hissing what should be done?

Which of these are properties of butane gas? Select all the apply (3/5)

What is a difference between an acetylene gas flame compared to other gas flames like natural gas, butane gas and propane gas?

Typically what would you be supplying when the manifold pressure for a natural gas supply is 3.5 inches w.c.?

An individual can inhale up to 450 ppm of ____ for a duration of one hour without any negative effects.

Two dissimilar metal wires connected in series would make what kind of sensor?

Friction in a gas pipe would cause the gas to ____ as it travels throughout the piping system.

Contaminants in the air are burned off prior to entry in a ____ pilot.

____ is when the pilot flame is extinguished due to the main burner ignition.

The thermopiles minimum output (mV) needed for the main burners gas valve to open is known as the ____.

What is the venturi effect?

What type of meniscus measures pressure by calculating the difference between the levels on either side?

If a pilot burner is operating efficiently the flame should be ____ in colour.

In what piece of equipment would a blue flame be considered optimal?

Which metal best fits the description of having a high resistance under reducing conditions to sulfuric and hydrochloric acid while also being resistant to seawater?

What is the name of the substance used as a synthetic resin thickener?

What size pipe of Kimax glass pipe would have a pressure rating of 100 psi?

A 90 degree 4 inch short radius elbow fitting would be ____.

A 90 degree 4 inch long radius elbow fitting would be ____.

If the bend radius of a 90 degree short radius welded elbow is 6 “, what size is the pipe?

If the bend radius of a 90 degree long radius welded elbow is 6 “, what size is the pipe?

The linear thickness of loose lined pipe would directly affect this:

The ____ used with fibreglass is typically inert or inorganic materials.

What substance would be referred to as a hardener?

300 Series stainless steel will expand 60% more then which other type of steel?

What term would you use to describe a crystalline structure?

The addition of the following alloying element with grey cast would make the iron much harder but more brittle?

Which type of pipe is coloured grey according to the APFA coding?

If the bend radius of a 90 degree long radius welded elbow is 4.5″, what size is the pipe in inches?

During the ____ process for metals, the heat must be gradually decreased to the atmospheric temperature to minimize the internal stresses of the metal.

The D, div-1 substances in WHMIS classifications are:

The ____ pipe bend is referred to as the throat.

The Pipe Fabrication Institute specifies cold bending requires the material to be bent at or below 56 °C less than the ____.

On a hydraulic circuit some threaded connections use separate devices for a hydraulic seal, what does it rely on the screw thread for?

A resistor of 6 ohms is connected to a 36 volt supply. Calculate the current flowing through the resistor.

In which situations would a boom truck be your best option?

What does it indicate when a electric crane has a rating of F?

What is the volt supply of a circuit with a resistor of 10 ohms and a current in the circuit of 4.5 amperes?

What are some advantages of a wall-hung direct vent boiler? Select all that apply (3/5)

A ____ consists of a tube closed at one end and mounted in the process stream

____ are cylindrical fittings used to protect temperature sensors installed in industrial processes.

What is a thermowell?

One disadvantage of a(n) ____ heating system is that the last heating unit receives cooler water.

One of the operational differences between a rotary pump and a reciprocating pump, is a rotary pump has a ____.

Backflow problems in boilers can be caused by:

A rotary screw pump would be the preferred choice to be installed in which of the following operating environments? Select all that apply (3/5)

The ____ pump would typically be installed in a heavy oil pipeline, hydraulic elevator, or machinery lubrication.

What does a variable displacement pump use to pump fluids?

What can changing the driver installed in a pump do for the performance of the pump?

How does a circulation pump operate?

What information for the boiler do you need to get from the manufacturer’s recommendations?

What should be installed on the highest point of a hot water heating system?

What information can be found on the label for a boiler? Select all that apply (3/5)

Variable displacement pumps include which of the following designs? Select all that apply (4/5)

A mixed, axial, peripheral and radial flow pump are all examples what?

What would be the most probable cause of a pressure relief valve lifting in a boiler?

Tubing can be categorized with which of the following variables? Select all that apply (3/5)

Material type, outside diameter and wall thickness are all factors used for the categorization of ____.

According to ASME what is required of pressure equipment to meet their code?

The type of heat exchanger material installed is one of the methods of classification for ____.

What would you call a pump that operates above 12 ft of head pressure?

The main purpose of a ____ valve is to prevent unauthorized personnel from inadvertently altering the settings.

What type of valve is used to prevent unauthorized individuals from manipulating the settings.

What occurs when hard water is heated above 148 °C?

What does an anchor do on a piping system?

Where would it be required to use a Class III snow melt system? Select all that apply (4/5)

When would you most likely use a gimbal expansion joint in a piping system?

Finned tube heating units are also referred to as which of the following? Select all that apply (3/5)

A finvector, wall fin and finned convector are all names for what?

What is the cause of a piping system expanding after being put into service?

What would be a potential problem when using a scissor loop expansion control assembly on a piping system?

Which of the following are examples of heat exchangers? Select all that apply (3/5)

What is the volume of a sealed drum that has a mass of 92 kg and requires a minimum of an additional 4610 kg to sink when floating in water?

The expansion control system of a hairpin loop will produce ____ at the anchor points when compared to other systems like a expansion joint or bellows joint.

Which of the following operating temperatures should be considered during the installation of single sleeve expansion joints? Select all that apply (3/5)

The lowest operating temperature, the highest operating temperature and the installation temperature should all be considered when referring to pipe movement in:

On hydronic systems relief valves are installed to perform which of the following operational functions? Select all that apply (3/5)

What type of valve can compensate for an increased pump head and provide a bypass for excess water on a hydronic system?

A quick closing valve can be the cause of ____.

What type of circulating pump body is recommended to be installed in heating systems where the water has a high composition of oxygen present.

Baseboard heating systems include which of the following components? Select all that apply (3/5)

A bracket, damper, and element are all components in what type of heating system?

What type of surface is the best absorber of radiant energy?

Water expands 7.5% when it changes from a ____.

In a piping system operating under vacuum conditions, ____ will still transfer heat energy through the system.

335 kJ/kg is the latent heat of fusion of ____.

335 kJ/Kg is the latent heat of solidification for ____.

Comparing similar sized globe and gate valves. the pressure loss in a globe valve can be ____ times greater.

In the context of heat loss calculations the acronym IDT represents “____”.

A temperature of 100 °C is what in Fahrenheit?

If a surface contact exceeds 60 °C on a baseboard heater, what does CSA rules require to be added on?

Sideways deflection is a common movement on what kind of a well supported run of pipe?

Heat energy always travels from a ____ object to a ____ object.