ABSA 4B d Questions with CORRECT Answers (Grade A+)

ABSA 4B d Questions with CORRECT Answers (Grade
A+)

Question 1:
Which of the following pump designs has a spiral casing with an increasing cross sectional area? 1.
rotary pump 2. rotary gear pump 3. rotary lobe pump 4. reciprocating pump 5. volute pump
Answer:
5. volute pump

Question 2:
A clear line of sight to the flame is required by a(n): 1. Flame scanner 2. Thermopile 3. Flame rod 4.
Thermocouple 5. All of the above
Answer:
1. Flame scanner

Question 3:
A ____ is installed to start a large diesel engine. 1. electric starting motor 2. induced oil pump 3. forced
oil pump 4. jacking oil pump 5. compressed air starting motor
Answer:
5. compressed air starting motor

Question 4:
The ____ is installed in an absorption system to increase the absorption limit of the lithium bromide
solution. 1. absorber 2. condenser 3. generator pump 4. evaporator 5. generator (concentrator)
Answer:
5. generator (concentrator)

Question 5:
To prime a pump you would: 1. verify that the suction valve is closed 2. fill the pump casing with the
product to be pumped to vent the entrapped air out of the pump casing prior to start up 3. verify that the
breaker is open 4. vent the entrapped liquid out of the pump casing to fill it with air. 5. verify that the
discharge valve is open
Answer:
2. fill the pump casing with the product to be pumped to vent the entrapped air out of the pump casing
prior to start up

,Question 6:
Air receivers are required ____. 1. to have a safety valve installed 2. to have a sentinel valve installed 3.
to have a surge valve installed 4. to have a rupture disc installed 5. to have a dewpoint analyzer
installed
Answer:
1. to have a safety valve installed

Question 7:
The machinist's hammer is also referred to as a ____. 1. thread hammer 2. precision hammer 3. flute
hammer 4. ball peen hammer 5. micrometer
Answer:
4. ball peen hammer

Question 8:
A ____ is a device installed on a pump to protect bearings from stuffing box water leakage. 1. sorbent
2. shaft sleeve 3. slinger 4. coupling 5. lantern ring
Answer:
3. slinger

Question 9:
____ in pumps is when the pressure in the suction line to the pump drops below the vapour pressure of
the liquid. 1. Purging 2. Priming 3. Surging 4. Hammering 5. Cavitation
Answer:
5. Cavitation

Question 10:
Maintaining minimal usage of make-up water is the most effective way to keep ____ within the boiler.
1. swell and shrinkage from occurring 2. high concentrations of oxygen 3. carryover 4. high water
levels 5. low concentrations of oxygen
Answer:
5. low concentrations of oxygen

, Question 11:
An extraction pump is not a required auxiliary component on a ____. 1. condensing steam turbine 2.
non-condensing steam turbine 3. diesel engine 4. compressor 5. reciprocating engine
Answer:
2. non-condensing steam turbine

Question 12:
When installing a ____ it must be sized to prevent the boiler pressure rising 6% above the MAWP of
the boiler. 1. check valve 2. boiler safety valve(s) 3. seal 4. try lever 5. low-water cut off
Answer:
2. boiler safety valve(s)

Question 13:
Two of the primary methods of ____ include the sulphite and sulphate process 1. attemperator 2.
chemical pulping 3. chemical evaporating 4. corrosion prevention 5. cooking liquor
Answer:
2. chemical pulping

Question 14:
Crystallization may occur in situations where the ____ rises above the upper concentration limit at the
lower temperature. 1. solutions lithium bromide concentration 2. solutions freon concentration 3.
solutions water concentration 4. solutions air concentration 5. solutions salt concentration
Answer:
5. solutions salt concentration

Question 15:
____ is a measure of a lubricating oils ability to support various loads. 1. Viscosity 2. Flash Point 3.
Fire Point 4. Pour Point 5. Neutralization Number
Answer:
1. Viscosity