Power engineering - Study guides, Class notes & Summaries
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Power Engineering 4A Exam Questions with correct Answers
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Power Engineering 4A Exam Questions with correct Answers
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Power Engineering Part A Unit 11 Rated A+
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Power Engineering Part A Unit 11 
 
Rated A+ 
 
Air Heater Transfer heat from the flue gas, or from steam, to the combustion air entering the 
boiler, to improve combustion efficiency 
 
Blowoff Valve Manually operated valve connected to a boiler for the intermittent discharge 
of boiler sediment, for lowering a boilers water level, or for draining a boiler 
 
Blowoff Vessel Vessel that intercepts, cools, and depressurizes boiler blowoff water, on 
order to protect municipal sewer systems 
 
Boi...
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4th Class Power Engineering Part A Exam Questions and Answers
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4th Class Power Engineering Part A Exam Questions and Answers
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Power Engineering 4A Questions and Answers Already Passed
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Power Engineering 4A Questions and 
 
Answers Already Passed 
 
The typical time required to heat a fluidized bed to ignition temperature prior to the introduction 
of coal is: 
Select one: 
a. Two hours 
b. Three hours 
c. One hour 
 
d. 30 minutes C 
 
The typical time required to heat a fluidized bed to ignition temperature prior to the introduction 
of coal is: 
Select one: 
a. Two hours 
b. Three hours 
c. One hour 
 
d. 30 minutes C 
 
When welding thick materials, proper weld groove selec...
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Power Engineering 4th Class - Unit A11 Questions and Answers 100% Pass
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Power Engineering 4th Class - Unit A11 
Questions and Answers 100% Pass 
 
(4-051-2.4) An early shell-type boiler had ___________ as its heating surface: 
Select one: 
a. Only the lower part of the shell 
b. The lower part of the shell and the rear plate or head 
c. The total shell side and one end plate or head 
d. Two passes along the shell or drum a 
 
(4-052-3.3) An advantage of a vertical tubeless firetube boiler is that it requires: 
Select one: 
 
a. Relatively small floor space 
b. No fu...
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4th Class Power Engineering Unit B2: Pumps and Compressors
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This is the distance between the surface of the liquid level of a supply source located below a pump and the center line of the pump: 
Select one: 
a. total static head 
b. static discharge head 
c. static suction head 
d. static suction lift - d 
 
The fact that different shaped containers, filled with liquid of the same height, have the same applied force by the liquid on the base of each container, is referred to as: 
Select one: 
a. Peterʼs Paradox 
b. Pascalʼs Paradox 
c. Pandaʼs Parad...
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Power Engineering ABSA 4B Questions with Complete Solutions.
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Power Engineering ABSA 4B Questions with Complete Solutions.
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POWER ENGINEERING CLASS 4 PART B EXAM
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POWER ENGINEERING CLASS 4 PART B EXAM
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Power Engineering 4th Class – Electrical Questions and Answers Already Passed
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Power Engineering 4th Class – Electrical 
Questions and Answers Already Passed 
 
The atom is the smallest unit of a pure substance and is also known as a(n): 
 
a) Molecule 
b) Compound 
c) Electron 
d) Element 
e) Proton d) Element 
 
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A basic law of electricity is: 
 
a) Ohm's Law 
b) Charles Law 
c) Boyles Law 
d) Unlike charges attract, like charges repel 
 
e) Do not touch live wires d) Unlike charges attract, l...
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4th Class Power Engineering Unit B3 Boiler Safety Devices.
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4th Class Power Engineering Unit B3 Boiler Safety Devices.4th Class Power Engineering Unit B3 Boiler Safety Devices.
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