3rd TSSA Part A2 - Test (III)
What is the peak-to-peak value of an alternating current if the rms value is 12 A? -
answer33.94 A
Electrostatic precipitators have an efficiency of greater than: - answer95%
The purpose of the bolted-on jacket on some plug valves is to: - answer Add heating to
a non-jacketed existing valve.
List the ways that butterfly valves can be installed into a piping system:
1. Welded.
2. Unions.
3. Flanged.
4. Wafer. - answer3, 4
Wet pipe sprinkler systems are found in:
1. Office buildings.
2. Stores.
3. Manufacturing facilities.
4. Hotels.
5. Health care facilities. - answer1, 2, 3, 4, 5
Which of these is the "Boiler, Pressure Vessel and Pressure Piping Code" ? -
answerCSA B51
The maximum temperature of fluids handled by a diaphragm valve must be below the
temperature limit for the: - answerDiaphragm material
The most frequently used materials for power piping systems are:
1. Inconel 800 H.
2. Alloy steels.
3. Low carbon steels.
4. Galvanized steel.
5. Austenitic stainless steels - answer2, 3, 5
In a magnetic circuit, the magnetic flux is the equivalent of electric _____ in an electric
circuit. - answerCurrent
An insulating material may be defined as one which: - answerTransmits heat poorly
Clear definitions for terms and equipment relating to refrigeration and air conditioning
equipment are defined in the _____. - answerCSA-B52
, Armature reaction _____ the main field of a generator. - answerDistorts
Viscosity of fuel oil _____ as the temperature increases and becomes nearly constant,
above 120°C. - answerDecreases
The armature core in a DC machine is made of: - answerSoft iron laminations.
The purpose of the AC kilovar meter is to: - answerMeasure the reactive power being
generated by the AC generation system.
Calculate the maximum allowable working pressure, in kPa, for a watertube boiler tube,
which is 73.5 mm O.D. and has a minimum wall thickness of 4.71 mm. The tube is
strength-welded into place in the boiler and is located in the furnace area of the boiler.
Tube material is carbon steel, SA-192, with a mean wall temperature of 280°C. -
answer11.54 MPa.
Centrifugal type steam separators have _____ sets of baffles: - answer2
Arrange into correct sequence, the following steps in the typical start up of a steam
system.
1. Check that each trap is working properly, to prevent an unexpected build-up of
condensate in the steam line.
2. All low point drain valves must be opened wide. These are usually located upstream
of all the trap stations and the supply to steam turbines inlet valves.
3. Continue opening the main header valve, as the steam pressure rises.
4. Crack open the bypass around the main header steam admission valve, if so
equipped. You should hear steam entering the header.
5. Check each low point drain for the presence of condensate.
6. If a bypass is not installed, crack open the main header steam admission valve.
7. If there is not any condensate coming from the drains, increase the opening of the
main header steam admission bypass valve.
8. Listen for the sounds of any water hammer taking place. If there is any, reduce -
answer2, 4, 6, 5, 7, 8, 9, 10, 11, 3, 1
The purpose of the frequency meter is to: - answerIndicate the frequency of the power
being produced.
Calculate the minimum required thickness, in mm, for a blank, un-stayed, full-
hemispherical head, with the pressure on the concave side. The head is fabricated from
seamless material and is double butt welded to the shell. All reinforcement is removed
and fully radiographed. The radius to which the head is dished is 700 mm, maximum
allowable working pressure is 4000 kPa, and the head material SA-285 C will not reach
a temperature greater than 340°C. Use S = 94.7 MPa (from 2004 Codes) - answer14.85
mm.
What is the peak-to-peak value of an alternating current if the rms value is 12 A? -
answer33.94 A
Electrostatic precipitators have an efficiency of greater than: - answer95%
The purpose of the bolted-on jacket on some plug valves is to: - answer Add heating to
a non-jacketed existing valve.
List the ways that butterfly valves can be installed into a piping system:
1. Welded.
2. Unions.
3. Flanged.
4. Wafer. - answer3, 4
Wet pipe sprinkler systems are found in:
1. Office buildings.
2. Stores.
3. Manufacturing facilities.
4. Hotels.
5. Health care facilities. - answer1, 2, 3, 4, 5
Which of these is the "Boiler, Pressure Vessel and Pressure Piping Code" ? -
answerCSA B51
The maximum temperature of fluids handled by a diaphragm valve must be below the
temperature limit for the: - answerDiaphragm material
The most frequently used materials for power piping systems are:
1. Inconel 800 H.
2. Alloy steels.
3. Low carbon steels.
4. Galvanized steel.
5. Austenitic stainless steels - answer2, 3, 5
In a magnetic circuit, the magnetic flux is the equivalent of electric _____ in an electric
circuit. - answerCurrent
An insulating material may be defined as one which: - answerTransmits heat poorly
Clear definitions for terms and equipment relating to refrigeration and air conditioning
equipment are defined in the _____. - answerCSA-B52
, Armature reaction _____ the main field of a generator. - answerDistorts
Viscosity of fuel oil _____ as the temperature increases and becomes nearly constant,
above 120°C. - answerDecreases
The armature core in a DC machine is made of: - answerSoft iron laminations.
The purpose of the AC kilovar meter is to: - answerMeasure the reactive power being
generated by the AC generation system.
Calculate the maximum allowable working pressure, in kPa, for a watertube boiler tube,
which is 73.5 mm O.D. and has a minimum wall thickness of 4.71 mm. The tube is
strength-welded into place in the boiler and is located in the furnace area of the boiler.
Tube material is carbon steel, SA-192, with a mean wall temperature of 280°C. -
answer11.54 MPa.
Centrifugal type steam separators have _____ sets of baffles: - answer2
Arrange into correct sequence, the following steps in the typical start up of a steam
system.
1. Check that each trap is working properly, to prevent an unexpected build-up of
condensate in the steam line.
2. All low point drain valves must be opened wide. These are usually located upstream
of all the trap stations and the supply to steam turbines inlet valves.
3. Continue opening the main header valve, as the steam pressure rises.
4. Crack open the bypass around the main header steam admission valve, if so
equipped. You should hear steam entering the header.
5. Check each low point drain for the presence of condensate.
6. If a bypass is not installed, crack open the main header steam admission valve.
7. If there is not any condensate coming from the drains, increase the opening of the
main header steam admission bypass valve.
8. Listen for the sounds of any water hammer taking place. If there is any, reduce -
answer2, 4, 6, 5, 7, 8, 9, 10, 11, 3, 1
The purpose of the frequency meter is to: - answerIndicate the frequency of the power
being produced.
Calculate the minimum required thickness, in mm, for a blank, un-stayed, full-
hemispherical head, with the pressure on the concave side. The head is fabricated from
seamless material and is double butt welded to the shell. All reinforcement is removed
and fully radiographed. The radius to which the head is dished is 700 mm, maximum
allowable working pressure is 4000 kPa, and the head material SA-285 C will not reach
a temperature greater than 340°C. Use S = 94.7 MPa (from 2004 Codes) - answer14.85
mm.
