ABSA: 4th Class Part B - Comprehensive Exam 4

Questions and Answers

One of the legal responsibilities of the engineer during an inspection is:

To have at least two staff members present at all times

To be in possession of an inspection certificate

To notify the Workers Compensation Board of the inspection

Point out any known or suspected defects to the inspector (correct)

The _____ tubes of a fired hot oil heater have fins on their outer surfaces.

Fire

Extended type (correct)

Radiant

Water

The injection pump of a diesel engine is driven by:

The gudgeon pin

The governor

A camshaft (correct)

Piston action

Ammonia, as well as being toxic, is also:

Flammable Signup and view all the answers

When a boiler primes, it means that:

Water is being carried over with the steam Signup and view all the answers

The slide valve of a steam engine is designed to:

Allow steam to enter and leave the cylinder Signup and view all the answers

A journal bearing:

Supports a shaft Signup and view all the answers

Smaller spark ignition engines use ____________ to vaporize gasoline:

Carburetion Signup and view all the answers

Heat load from people in a room is mostly affected by:

The activity of the people Signup and view all the answers

Testing a safety valve on a boiler by pulling the try-lever:

Ensures the valve is free to operate Signup and view all the answers

The ______________ is a type of unitary air conditioning system that uses a direct expansion refrigeration system to provide cooling and dehumidification, without using ductwork.

Window air conditioner Signup and view all the answers

The property of oil that indicates its ability to support a load is:

Viscosity Signup and view all the answers

The inner walls and floor of a fired heater furnace are lined with:

Refractory Signup and view all the answers

A collar thrust bearing:

Has boundary lubrication Signup and view all the answers

With regard to hot oil leaving the heater, the operating parameter of particular importance is the oil:

Temperature Signup and view all the answers

Buildings require heat sources to:

Offset the building's heat losses Signup and view all the answers

Grooving and general thinning of the condensate return system is a result of:

Carbonic acid corrosion Signup and view all the answers

Freezing problems in steam coils with long tube lengths, when heating large amounts of low temperature outside air, can be minimized using:

Preheat coils controlled by an outdoor temperature controller Signup and view all the answers

The blow off valve in a storage heater is used to:

Remove sediment from the base of the heater Signup and view all the answers

Study Notes

Legal Responsibilities of Engineers

Engineers must notify inspectors of any known or suspected defects during inspections.

Fired Hot Oil Heater Tubes

Extended type tubes feature fins on their outer surfaces, enhancing heat transfer efficiency.

Diesel Engine Injection Pump

The injection pump is driven by a camshaft, facilitating proper fuel delivery.

Ammonia Properties

Ammonia is toxic and flammable, posing significant safety hazards in various applications.

Boiler Priming

Boiler priming indicates water is being carried over with steam, which can affect performance.

Steam Engine Slide Valve

The slide valve is designed to manage steam entry and exit in the cylinder, essential for efficient operation.

Journal Bearings

Journal bearings support shafts and require adequate lubrication for effective functioning.

Spark Ignition Engine Fueling

Carburetion is used in smaller spark ignition engines to vaporize gasoline for combustion.

Heat Load from Occupants

The primary factor affecting heat load from people in a room is their activity level, impacting overall heating needs.

Safety Valve Testing

Pulling the try-lever ensures safety valves on boilers are free to operate, a critical aspect of safety assessments.

Unitary Air Conditioning Systems

Window air conditioners utilize direct expansion refrigeration for cooling and dehumidification without ductwork.

Oil Load Support

Viscosity is the key property that indicates an oil's ability to support a load, influencing lubrication effectiveness.

Fired Heater Furnace Lining

The inner surfaces of fired heater furnaces are lined with refractory material for heat resistance.

Collar Thrust Bearings

These bearings have boundary lubrication capabilities and are suitable for supporting substantial loads.

Operating Parameters for Hot Oil

The temperature of hot oil leaving the heater is a critical operating parameter for system performance.

Heat Sources for Buildings

Buildings require heat sources to compensate for heat losses, ensuring indoor comfort and energy efficiency.

Condensate Return System Issues

Grooving and thinning in condensate return systems are caused by carbonic acid corrosion, affecting system integrity.

Minimizing Freezing in Steam Coils

Installing preheat coils that are controlled by outdoor temperature can help mitigate freezing problems in long steam coils.

Blow-off Valve in Storage Heaters

The blow-off valve is essential for removing sediment from the base of the heater, promoting efficient operation.

Antifriction Bearings Maintenance

Antifriction bearings utilizing grease still require periodic cleaning and maintenance to ensure optimal performance.

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Description

Test your knowledge on engineering responsibilities and inspection processes with this comprehensive exam for ABSA basic skills. The flashcards cover essential concepts and legal responsibilities engineers face during inspections. Perfect for students and professionals preparing for assessments.