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MD Stationary Engineer Exam with correct Answers
Typology: Exams
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Gases of Combustion that cool on Contact with the boiler heating Surface before combushion is completed Cause a(n) _________ - Answer- Formation of soot and smoke In the event of a flame failure, the programmer will______ - Answer- Secure the fuel, purge the firebox, and then shut down Boil the water must be conditioned to prevent ______ (3 Answers) - Answer- Formation of scale, oxygen pitting, carryover Rank refers to the __________ of the coal - Answer- Degree of Hardness Gauge pressure plus atmospheric pressure equals what? - Answer- Absolute pressure Air needed for combustion of fuel is made up of approximately _________% oxygen and ________ nitrogen - Answer- 20, 80 What is the pressure applied on the boiler during a hydrostatic test? - Answer- 1.5 times the Maximum Allowed Working Pressure Natural water may contain.... - Answer- Solids, gases, and other pollutants from industrial waste Recorders are used to.... - Answer- Give an overall view of the Steam planet operation Adirect cause oh overheating of the boiler tubes is..... - Answer- Scale formation on the tubes The primary function of a combustion control is to ensure.... - Answer- Boiler efficiency Flow meters measure the rate of flow of.... - Answer- A variety of fluids What is the cooling tower supply water temperature generally? - Answer- 80 degrees What is the cooling tower return water temperature generally? - Answer- 90 degrees
Most thermometers used in a steam plant are calibrated in what? - Answer- Degrees/ Fahrenheit Thermocouples measure... - Answer- Temperature Carbon Dioxide in the flue has is a sign of what kind of combustion? - Answer- Complete Bituminous coal has a high ______ content - Answer- Volatile The types of variable area flow meters are.... (2 Answers) - Answer- Rotometer and Valve The Rotometer flow meter consists of a ___________ - Answer- Ball in a tapered tube Stay bolts Reinforce flat boiler surface. What do you do if one becomes broken? - Answer- Replace the Stay Bolt The madulating pressure control is sensitive to what? - Answer- Temperature The boiler steam-pressure gauge is protected from high temperatures by - Answer- siphon Compressor does what? - Answer- Changes low pressure gas to a high pressure liquid What should never be blown down during furnace operation? - Answer- Water walls Light and a photoelectric cell are sometimes used to indicate - Answer- smoke density The cold lime-soda process softens the boiler water at? - Answer- Ambient Temperature Pressure gauges are calibrated in pounds per? - Answer- square inch Deposits of calcium and magnesium carbonates on the boiler heating surface cause___
Oxygen in the boiler will cause - Answer- pitting of boiler metal What Valve cuts the boiler in on the line and off-line automatically? - Answer- Automatic nonreturn valve Grade refers to the ___ of a coal - Answer- size, heating value, and ash content What is the three types of fire tubs boilers? - Answer- 1. Horizontal Return Tubular Boiler