BOILERMAKER EXAM 2 REAL QUESTIONS + DETAILED ANSWERS -
LATEST VERSION - TOP RATED
1. Once the size of a gasket or O-ring has been determined, what factors must be
considered before choosing a gasket or O-ring? - ANSWER : Compatibility
2. Which gasket is made of stainless steel with a graphite insert? - ANSWER :
Spiral-wound gasket
3. Natural rubber has limited chemical resistance to what substances? - ANSWER
: Petroleum products
4. Which gasket material is not recommended for water service and has poor
chemical resistance? - ANSWER : Neoprene
5. Which substance would be compatible with a nitrile gasket? - ANSWER :
Alcohol
6. In what types of applications are RTJ gaskets used? - ANSWER : High-
pressure applications
7. The radius of a bolt circle is equal to what measurement? - ANSWER : Half the
diameter
8. In gasket making, what is the purpose of using bluing ink? - ANSWER : To
transfer the flange impression to the gasket material
9. When tightening the bolts on a circular multi-bolt flange, should you start at 12
o'clock and proceed clockwise? - ANSWER : False
10.Graphite packings should not be used for applications where what is present? -
ANSWER : Oxygen
11.In what type of applications is TFE/synthetic fiber packing used? - ANSWER :
Caustic chemical applications
12.Where are packing rings usually installed on revolving equipment? - ANSWER
: In a gland
13.When installing new packing, how many degrees should you stagger the new
cut end from the previous ring's cut end? - ANSWER : 180 degrees
14.Which type of O-ring can be used with most petroleum and silicone fluids,
hydraulic fluids, and solvents? - ANSWER : Buna-N
15.What is the approximate temperature range for Viton® O-rings? - ANSWER : -
31°F to 400°F
, 16.Gaskets made of natural rubber have limited solvent and oil resistance and may
be damaged by what? - ANSWER : Petroleum products
17.A gasket must be able to withstand required bolt torques without undergoing
what type of excessive movement? - ANSWER : Plastic flow
18.What term describes a material that will not react with other chemicals? -
ANSWER : Inert
19.When a gasket loses thickness and protrudes from a flange, what is it
developing? - ANSWER : Creep
20.What quality allows natural rubber to return to its original shape after being
compressed? - ANSWER : Resilience
21.A gasket made of EPDM (Ethylene propylene diene terpolymer) will be
resistant to heat and what else? - ANSWER : Ozone
22.To lay out a new gasket, what should be drawn for the pipe opening diameter
and the outside diameter of the flange? - ANSWER : Concentric circles
23.What must happen to gaskets between two flanges to form a tight seal? -
ANSWER : They must be compressed
24.A gasket that is unaffected by the fluid in the system is said to be what? -
ANSWER : Impervious
25.What is often formed when electricity passes through oxygen? - ANSWER :
Ozone
26.For high-temperature or high-pressure applications, what are gaskets and O-
rings often coated with? - ANSWER : Tetrafluoroethylene (TFE or Teflon®)
27.Which welding process requires the use of a filler metal in the form of a
consumable metal electrode? - ANSWER : SMAW
28.Which cutting process uses a high-current arc to cut metal? - ANSWER : CAC-
A
29.Why are inert gases such as argon and helium used in welding? - ANSWER :
To provide a protective barrier around the welding
30.Why should polyester and synthetic fabrics not be worn when welding? -
ANSWER : Sparks will cause them to melt, inflicting burns to the skin
31.Why is proper ventilation important when welding? - ANSWER : The fumes
and smoke given off by the process can be toxic
32.In SMAW, how is the welding current transferred into the work? - ANSWER :
Through the wire core of the electrode holder
LATEST VERSION - TOP RATED
1. Once the size of a gasket or O-ring has been determined, what factors must be
considered before choosing a gasket or O-ring? - ANSWER : Compatibility
2. Which gasket is made of stainless steel with a graphite insert? - ANSWER :
Spiral-wound gasket
3. Natural rubber has limited chemical resistance to what substances? - ANSWER
: Petroleum products
4. Which gasket material is not recommended for water service and has poor
chemical resistance? - ANSWER : Neoprene
5. Which substance would be compatible with a nitrile gasket? - ANSWER :
Alcohol
6. In what types of applications are RTJ gaskets used? - ANSWER : High-
pressure applications
7. The radius of a bolt circle is equal to what measurement? - ANSWER : Half the
diameter
8. In gasket making, what is the purpose of using bluing ink? - ANSWER : To
transfer the flange impression to the gasket material
9. When tightening the bolts on a circular multi-bolt flange, should you start at 12
o'clock and proceed clockwise? - ANSWER : False
10.Graphite packings should not be used for applications where what is present? -
ANSWER : Oxygen
11.In what type of applications is TFE/synthetic fiber packing used? - ANSWER :
Caustic chemical applications
12.Where are packing rings usually installed on revolving equipment? - ANSWER
: In a gland
13.When installing new packing, how many degrees should you stagger the new
cut end from the previous ring's cut end? - ANSWER : 180 degrees
14.Which type of O-ring can be used with most petroleum and silicone fluids,
hydraulic fluids, and solvents? - ANSWER : Buna-N
15.What is the approximate temperature range for Viton® O-rings? - ANSWER : -
31°F to 400°F
, 16.Gaskets made of natural rubber have limited solvent and oil resistance and may
be damaged by what? - ANSWER : Petroleum products
17.A gasket must be able to withstand required bolt torques without undergoing
what type of excessive movement? - ANSWER : Plastic flow
18.What term describes a material that will not react with other chemicals? -
ANSWER : Inert
19.When a gasket loses thickness and protrudes from a flange, what is it
developing? - ANSWER : Creep
20.What quality allows natural rubber to return to its original shape after being
compressed? - ANSWER : Resilience
21.A gasket made of EPDM (Ethylene propylene diene terpolymer) will be
resistant to heat and what else? - ANSWER : Ozone
22.To lay out a new gasket, what should be drawn for the pipe opening diameter
and the outside diameter of the flange? - ANSWER : Concentric circles
23.What must happen to gaskets between two flanges to form a tight seal? -
ANSWER : They must be compressed
24.A gasket that is unaffected by the fluid in the system is said to be what? -
ANSWER : Impervious
25.What is often formed when electricity passes through oxygen? - ANSWER :
Ozone
26.For high-temperature or high-pressure applications, what are gaskets and O-
rings often coated with? - ANSWER : Tetrafluoroethylene (TFE or Teflon®)
27.Which welding process requires the use of a filler metal in the form of a
consumable metal electrode? - ANSWER : SMAW
28.Which cutting process uses a high-current arc to cut metal? - ANSWER : CAC-
A
29.Why are inert gases such as argon and helium used in welding? - ANSWER :
To provide a protective barrier around the welding
30.Why should polyester and synthetic fabrics not be worn when welding? -
ANSWER : Sparks will cause them to melt, inflicting burns to the skin
31.Why is proper ventilation important when welding? - ANSWER : The fumes
and smoke given off by the process can be toxic
32.In SMAW, how is the welding current transferred into the work? - ANSWER :
Through the wire core of the electrode holder
