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Exam (elaborations)

4th Class ABSA Exam Part A Practice

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4th Class ABSA Exam Part A Practice

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1 of 207

Definition



A pilot that lights automatically each time there is a call for heat. It
burns during the entire period the main burner is firing.



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Infinite Pilot Continuous Pilot




Expanding Pilot Intermittent Pilot


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2 of 207

Definition



A heat transfer apparatus for heating steam after it has given up
some of its original heat in doing work in the high-pressure section

,of a steam turbine.



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Superheater Air Preheater




Evaporator Reheater


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3 of 207

Definition



Ability of a material to retain its deformed shape when a deforming
force is removed.



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Plasticity Ductility




Elasticity Stiffness


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4 of 207

Definition

,The most powerful greenhouse gas in terms of how it affects


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Water Vapour Safety valve




Wiring Diagrams Hardness


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5 of 207

Definition



Molybdenum increases the hardness and endurance limits of steel,
and increases creep strength. It also increases steel's corrosion
resistance.



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Elastic Limit Molybdenum




Porosity Root Opening


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6 of 207

Definition

, The series of pipes, valve controls, and regulators that control the
fuel flow to a burner.



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Natural Draft Low-Pressure Steam Boiler




High Pressure Steam Boiler Fuel Train


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7 of 207

Definition



A hard, strong, and brittle form of cast iron, produced by chilling
cast iron as it solidifies.



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Hazard Control White Cast Iron




Ductile Iron Multi-spud burner


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8 of 207

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