ABSA 4b EXAM STUDY GUIDE 2026/2027 ACCURATE QUESTIONS WITH CORRECT DETAILED SOLUTIONS || 100% GUARANTEED PASS NEWEST VERSION

ABSA 4b EXAM STUDY GUIDE 2026/2027 ACCURATE QUESTIONS WITH CORRECT DETAILED SOLUTIONS || 100% GUARANTEED PASS NEWEST VERSION 1. Internal ____ is not required for dynamic type compressors. seals lubrication pressure monitoring corrosion monitoring temperature monitoring - ANSWER b 2. Low pressure or high pressure are the two primary classifications of ____. centrifugal pumps sump pumps boilers draft fans pressure controllers - ANSWER e 3. When mixed with an alkaline sample, phenolphthalein will turn ____. red orange pink blue green - ANSWER c 4. Gas burners should be ____ to perform a thorough cleaning and inspection. inspected semi-annually inspected weekly inspected monthly inspected daily inspected annually - ANSWER e 5. With regards to lighting systems, the advantages of low voltage switching include: No conduit is required for the wiring All of the above Adjustments can be made relatively easily The control of lights can be remote or local Adjustments can be made with relatively low capital costs - ANSWER b 6. ____ are installed in applications where the capability for the rotor to reverse rotational direction is desired (example: ships). Reciprocating engines Heat engine Steam engines Gasoline engines Diesel engines - ANSWER c 7. The overspeed trip component is required to be tested ____ to ensure its correct functioning. annually after the turbine has experienced and overspeed trip before the turbine is placed in service after the turbine is placed in service weekly - ANSWER c 8. Increased temperature of the supplied cooling water can reduce the effectiveness of the oil seal between the ___. injection nozzle seals injection pump walls piston rings and cylinder walls filter media carburetor walls - ANSWER c 9. Plants utilize natural gas or light hydrocarbons from the wells as ____ for the processing plant. feedstock raw gas sour gas sweet gas hydrocarbons - ANSWER a 10. ____ is a ratio of the water vapor content of the mixture to the total air content on a mass basis. Relative density Saturation Osmosis Entropy Specific humidity - ANSWER e 11. Cutters, drill heads, and wire brushes are all ____ used to clean boiler tubes. mechanical methods power methods practical methods chemical methods maintenance methods - ANSWER a 12. Indirect and direct lighting systems can be installed in a building to improve upon the ___. 1. luminaires 2. dimmer switches 3. automatic switches 4. occupancy sensors 5. ambient lighting - ANSWER 5. ambient lighting 13. Glycol cooling/heating systems should have the inhibitor strength and freeze point verified every ____. 1. year 2. 3 to 5 years 3. week 4. quarter 5. month - ANSWER 1. year 14. To prevent force being applied to the boilers safety valve the ____ is independently supported. 1. supervisory valve 2. blowdown valve 3. anchor 4. fuel valve 5. safety valve discharge piping - ANSWER 5. safety valve discharge piping 15. It is a Life Safety Code requirement that ____ be installed in all institutional and educational occupancies. 1. automatic switches 2. occupancy sensors 3. dimmer switches 4. emergency exit lighting 5. direct lighting systems - ANSWER 4. emergency exit lighting 16. Frosting of the recovery coil makes it difficult for the ___ to achieve heat recovery during cold ambient conditions. 1. humidifier heat recovery 2. humidistat heat recovery 3. dual duct heat recovery 4. runaround type heat recovery 5. four pipe heat recovery - ANSWER 4. runaround type heat recovery 17. A(n) _____ is approved by code to perform boiler safety valve adjustments. 1. 2nd Class Power Engineer 2. 1st Class Power Engineer 3. 3rd Class Power Engineer 4. 4th Class Power Engineer 5. ASME certified agency - ANSWER 5. ASME certified agency