Absa questions with verified answers
_____ sets boiler piping rules for: materials, design, fabrication,
construction, and testing.
Choose one answer.
a. ASME B31.3
b. ASME B31.1
c. ASME Section 1
d. ASTM
e. CSA Ans✓✓✓ b. ASME B31.1
A balanced plug valve could be described as:
1. Having cage-style trim used to provide valve plug guiding, seat ring
retention, and flow characterization.
2. Having a valve plug that moves inside a removable cage that holds
down a seating ring.
3. Dividing the flow in half through two control ports.
Choose one answer.
a. 1
b. 2
,c. 3
d. 1, 2
e. 2, 3 Ans✓✓✓ d. 1, 2
A boiler drum is made of SA-515-70 steel and has a ligament efficiency
of 0.66. If the steam temperature is 280°C and the inside diameter of the
drum is 1.6 m, what will the maximum operating pressure be, in kPa?
Use S = 121 MPa and t = 68.5 mm.
Choose one answer.
a. 2500 kPa.
b. 6500 kPa.
c. 7500 kPa.
d. 5200 kPa.
e. 5800 kPa. Ans✓✓✓ b. 6500 kPa.
A combination of the following characteristics will determine what the
strength of a pipe will be:
,1. Wall thickness
2. Pipe length
3. Material used
4. Temperature to which it is subject
5. Whether seamless or welded
Choose one answer.
a. 1, 2, 3, 4
b. 1, 3, 4, 5
c. 2, 3, 4, 5
d. 3, 4, 5
e. 1, 3, 4 Ans✓✓✓ b. 1, 3, 4, 5
A DC generator is a DC machine driven by an:
Choose one answer.
a. DC source of electricity.
b. Prime mover.
c. Qualified person.
, d. AC source of electricity.
e. Electrochemical source. Ans✓✓✓ b. Prime mover.
A group "B3" refrigerant is:
Choose one answer.
a. Sulphur dioxide
b. Most toxic of the three groups
c. Least flammable of the three groups of refrigerant
d. Carbon dioxide
e. Ammonia Ans✓✓✓ b. Most toxic of the three groups
A group of units draining to a common return header:
1. May be trapped as one unit
2. Must be trapped separately
3. Should have a check valve in each line
4. Do not require a trap
Choose one answer.
_____ sets boiler piping rules for: materials, design, fabrication,
construction, and testing.
Choose one answer.
a. ASME B31.3
b. ASME B31.1
c. ASME Section 1
d. ASTM
e. CSA Ans✓✓✓ b. ASME B31.1
A balanced plug valve could be described as:
1. Having cage-style trim used to provide valve plug guiding, seat ring
retention, and flow characterization.
2. Having a valve plug that moves inside a removable cage that holds
down a seating ring.
3. Dividing the flow in half through two control ports.
Choose one answer.
a. 1
b. 2
,c. 3
d. 1, 2
e. 2, 3 Ans✓✓✓ d. 1, 2
A boiler drum is made of SA-515-70 steel and has a ligament efficiency
of 0.66. If the steam temperature is 280°C and the inside diameter of the
drum is 1.6 m, what will the maximum operating pressure be, in kPa?
Use S = 121 MPa and t = 68.5 mm.
Choose one answer.
a. 2500 kPa.
b. 6500 kPa.
c. 7500 kPa.
d. 5200 kPa.
e. 5800 kPa. Ans✓✓✓ b. 6500 kPa.
A combination of the following characteristics will determine what the
strength of a pipe will be:
,1. Wall thickness
2. Pipe length
3. Material used
4. Temperature to which it is subject
5. Whether seamless or welded
Choose one answer.
a. 1, 2, 3, 4
b. 1, 3, 4, 5
c. 2, 3, 4, 5
d. 3, 4, 5
e. 1, 3, 4 Ans✓✓✓ b. 1, 3, 4, 5
A DC generator is a DC machine driven by an:
Choose one answer.
a. DC source of electricity.
b. Prime mover.
c. Qualified person.
, d. AC source of electricity.
e. Electrochemical source. Ans✓✓✓ b. Prime mover.
A group "B3" refrigerant is:
Choose one answer.
a. Sulphur dioxide
b. Most toxic of the three groups
c. Least flammable of the three groups of refrigerant
d. Carbon dioxide
e. Ammonia Ans✓✓✓ b. Most toxic of the three groups
A group of units draining to a common return header:
1. May be trapped as one unit
2. Must be trapped separately
3. Should have a check valve in each line
4. Do not require a trap
Choose one answer.
