3rd Class Stationary Steam Engineer License Prep: Questions and Answers, Exams of Nursing

Download 3rd Class Stationary Steam Engineer License Prep: Questions and Answers and more Exams Nursing in PDF only on Docsity!

3rd Class Stationary Steam Engineer License Prep

Questions with Verified Answers

_________ are necessary for complete combustion - Correct Answers time, temperature, mixture, and atomization If the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ - Correct Answers214. A boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. The blow down is______psi - Correct Answers An oil cooler is commonly used with a (n) ________ when operating in conjunction with a turbo-generator - Correct Answers steam turbine A boiler is producing 40,000lb of steam/hr. at a pressure of 100 PSI and a steam temperature of 500 degrees Fahrenheit. The steam produced is _______ steam - Correct Answers superheated The economizer on a boiler is used to _______ - Correct Answers add heat to the feed water Blowers are normally used with________ boilers - Correct Answers water tube Overheating of tubes on a boiler can be caused by________ - Correct Answers scale on tubes Carbon dioxide in a condensate returns system causes_________ - Correct Answers channeling A ________ pump is a positive displacement pump - Correct Answers reciprocating A boiler generating 6000 lb. of steam/hr. produces _______but/hr. - Correct Answers6, 000, A bottom blow down is performed on a boiler to _____ - Correct Answers discharge sludge and sediment Water columns are connected to the boiler with a minimum of _______" pipe - Correct Answers The minimum size of a water column blows down valve is_______". - Correct Answers3/

The maximum size bottom blows down valve on a boiler is_________". - Correct Answers2 1/ A ________ allows condensate to pass through, but stops Steam. - Correct Answers steam trap When taking over a shift, the first thing to do is check the________ - Correct Answers water level in each boiler according to the same code, a high-pressure boiler having more than 500 square feet of heating surface shall have________ - Correct Answers two or more safety valves The probable cause of an increase in temperature of gases of combustion at the boiler Outlet is____ - Correct Answers dirty heating services Boilers in battery equipped with________ must have two main steam stop valves and a free-flowing drain between them - Correct Answers manhole openings In order to be sure the gauge glass is indicating an accurate water level reading, the stationary engineer should______ - Correct Answers lowdown the gauge glass A continuous blow down line is located___ - Correct Answers in the Steam and water drum well below the now A temperature reading of 80 degrees Celsius is equal to_________°f - Correct Answers A chimney temperature of 250 degrees Fahrenheit above steam temperature indicates_______ - Correct Answer spoor efficiency A manometer is red in________ - Correct Answers inches of water The boiling point of water will____ with an increase in pressure - Correct Answers be raised If a lather is not obtained when performing a soap hardness test, the water sample is_______ - Correct Answer shard Combustion efficiency can be increased when air is________ - Correct Answers preheated ______ Draft is produced by a fan located between the boiler and the chimney - Correct Answers induced

Chemicals can be added to a boiler by a______pump - Correct Answers proportioning The feed water stop valve is found between the____ - Correct Answers boiler and check valve Sensible heat is______ - Correct Answers heat that can be measured with a thermometer Balanced draft is______ - Correct Answers constant furnace pressure slightly below atmospheric pressure A flame rod_______ - Correct Answers ensures that the gas pilot is lighted There are approximately_____but in 1 cu ft. of Natural Gas - Correct Answers The pH of boiler water may be controlled by using ______ - Correct Answers caustic soda Boiler water with a pH of 11 is________ - Correct Answers alkaline A scotch Marine boiler is easily identified because it_____ - Correct Answers has a cylindrical internal furnace The air flow switch at the burner fan housing________ - Correct Answers and shows the primary air fan is functioning The same code recommends that low water fuel cutoff switch be tested by an evaporation test__________ - Correct Answers monthly A neutral solution is_______ on the pH scale - Correct Answers A dry pipe separator _____ - Correct Answers delivers higher-quality steam to the header Draft is carefully controlled to_____ - Correct Answers completely burn fuel supplied to the burner Draft is measured with a_________ - Correct Answers manometer A rangeland test is used to determine_______ - Correct Answers smoke density A flame scanner proves (verifies) __________ - Correct Answers pilot in Maine Flame According to the same code, when warming up a boiler the air cock is closed when_______ - Correct Answers the steam pressure gauge reads 25 psi

A motor rated at 25 horsepower delivering 20 horsepower is operating at_______% capacity - Correct Answers A deposit of scale or mud in an HRT boiler could cause_____ - Correct Answers bag to develop Water wall tubes protect the refractory and_____ - Correct Answers increase boiler heating surface Steam at E250 Pisa and 400 degrees Fahrenheit is considered______ Steam - Correct Answers saturated Sensible heat is heat that_____ - Correct Answers changes a substances temperature but not its state Extra-heavy pipe must be used on blow down lines when the steam pressure exceeds______ psi - Correct Answers To check the water level on a boiler online, it is best to_____ - Correct Answers lowdown the gauge glass A steam pressure gauge has a siphon between the boiler and the pressure gauge to _______ - Correct Answers prevent Steam from entering the pressure gauge If a boiler evaporates 50,000 lbs. of steam/hour and is evaporating 10 pounds of steam/sq. ft. of heating surface, the heating surface of the boiler is ____sq. ft. - Correct Answers Oxygen in feed water causes ______ - Correct Answer spitting It is permissible to have one blow down valve on a boiler operated under______ psi - Correct Answers At atmospheric pressure, water boils and turns to steam at _____ °f - Correct Answers A steam pressure gauge is protected against excessive temperature by a ______ - Correct Answers siphon The only type of safety valve allowed on a boiler by the same code is a_____ safety valve - Correct Answers spring-loaded pop The primary function of a boiler is to _____ - Correct Answers generate steam efficiently

Package boilers are programmed to _____ - Correct Answers ignite the burner in low fire There are________ sq. ft. of heating surface in a water tube 3 1/2" in diameter and 20' long - Correct Answers18. To change 1 lb. of water from and at212 °f into steam at atmospheric pressure, ______ but are necessary - Correct Answers970. A surface condenser is one that______ - Correct Answers has circulating water flowing through the tubes and exhaust steam around the outside of the tubes A boiler is rated at 30,000 lb. /hr. and has a 5% blow down loss. The minimum size feed water pump to supply this boiler is ________ gal. /hr. - Correct Answers Three types of draft used in power plants are______ - Correct Answers natural, forest, and induced In a water tube boiler, heat and gases of combustion pass______ - Correct Answers around the tubes When the burner is in high fire, the______ - Correct Answers air-fuel ratio is at maximum rate A boiler with a draft gauge showing a positive pressure indicates_____ - Correct Answers furnace pressure is above atmospheric pressure Down comer tubes are found _____ - Correct Answers in a water tube boiler A boiler connected in battery requires a free blowing drain between the two stop valves when the ______ - Correct Answers boiler has a manhole opening Most furnace explosions are caused by _____ - Correct Answers failure to purge the furnace at startup Baffles in the boiler are designed to direct gases of combustion for close contact with the ________ - Correct Answers boiler heating surface The over speed tripping device on a steam turbine must be tripped when____ - Correct Answers shutting down the steam turbine One gallon of no. 6 fuel oil weighs approximately _______ lb. - Correct Answers8. Three types of boiler feed water pumps are _____ - Correct Answers reciprocating, centrifugal, and turbine

The most important fitting on a boiler is the______ - Correct Answers safety valve Viscosity of fuel oil is a________ - Correct Answers measure of internal resistance to flow Boiler water treatment is required to____ - Correct Answers prevent scale formation on eating surfaces The safety valve______ - Correct Answers prevents the boiler from exceeding its map Try cocks I used to________ - Correct Answers as a secondary means to determine water level A glass is used to ______ - Correct Answers indicate the water level in the boiler Before using soap blowers, it is necessary to______ - Correct Answers open the steam line on the soot blower Safety valve repair should be done by the________ - Correct Answers safety valve manufacturer or an authorized representative Steam at a temperature of 350 degrees Fahrenheit and a pressure of 50 psi is______ - Correct Answers superheated A duplex double-acting reciprocating feed water pump has____ - Correct Answers to steam Pistons 2 to 2 2/2 times larger in area than the water piston An accumulation test is used to determine_______ - Correct Answers safety valve capacity A water tube boiler has 250 tubes that are 20 ft. long and 3" in diameter. If the boiler produces one BHP for every 10 sq. ft. of heating surface, the maximum BHP it will produce is________ BHP - Correct Answers During a boiler inspection, the main steam stop valves are _______ - Correct Answers closed, locked, and tagged When a quick opening valve is used as a blow down valve, it is located ______ - Correct Answers between the boiler and slow opening valve Listing lovers on safety valves are used to_____ - Correct Answers manually test valves The frequency of performing a bottom blow down is determined by ______ - Correct Answers boiler Water Analysis

A closed feed water heater is always installed_______ - Correct Answer son the discharge side of the feed water pump The purpose of a burner pressure control is to _____ - Correct Answers start and stop the burner firing cycle A gas pressure regulator is used to control the ______ - Correct Answers gas pressure at the burner If the chimney temperature is 250 degrees Fahrenheit higher than the Steam and water temperature, the boiler is _______ - Correct Answers not operating efficiently The most controllable heat loss in a boiler is from the loss of heat in______ - Correct Answers gases of combustion On the feed water line, the valve closest to the boiler shell is a _____ valve - Correct Answers stop Four basic systems found on boilers are ______< - Correct Answers steam, feed water, fuel, and draft If a low-water condition occurs, the operator should first _______ - Correct Answers secure the burners A pressure control on a boiler is used to. _______ - Correct Answers control the operating range of the boiler Sup blowers are most commonly found ______ - Correct Answer son water tube boilers a duplex reciprocating feed water pump operates on the principle that the _______ - Correct Answers steam piston area must be 2 to 2 1/2 times larger than the water piston When testing the safety valve by hand, it is the accepted practice to have. _________ - Correct Answer sat least 75% popping pressure before testing Oxygen in a boiler drum causes. ________ - Correct Answer spitting __________ Steam turbines allow condensate to be reclaimed for use in the system - Correct Answers condensing With water at a temperature of 212°f, 1 bop is equivalent to the evaporation of 34.5 lb. of water every ________ hour(s) - Correct Answers In a closed feed water heater, the _________ - Correct Answers Steam and water do not mix

Sensible heat is heat that ______ - Correct Answers changes the temperature of a substance but not its state When performing a hydrostatic test on a boiler, the safety valve must be. ________ - Correct Answers removed from the boiler and the opening blank or gagged If repairs are to be made on a safety valve, they must be made by the. _______/ - Correct Answers manufacturer of the safety valve or authorized representative The proper way to stop a steam turbine when taking it off line is to _______ - Correct Answer strip the over speed device by hand Approximately. _______^ of air is required to completely burn 1 lb. of fuel oil - Correct Answers15 lb. In order to reduce the viscosity of a fuel oil, it's. _______ - Correct Answers temperature must be increased What are is prevented from backing up into the steam line on a DE aerator ________ - Correct Answers an internal overflow or a loop seal A steam pressure gauge must have a range of at least. _______ - Correct Answers 1/2 times the map Electrostatic precipitators are used in the power plants to ________ - Correct Answers remove fly ash from gases of combustion Valve located between the boiler and water column must be ______ - Correct Answers locked or sealed open The boiling point of water. ________ with an increase in pressure - Correct Answers increases A hole is drilled in the end of a stay bolt _______ - Correct Answers to warn of a corroded stay When taking a boiler off line, a vacuum is prevented by. _____ - Correct Answers opening the air cock A valve that requires five 360° turns of the hand wheel to change from fully open to fully closed is a. _______ valve - Correct Answers slow opening A thermostatic steam trap opens when the ______ - Correct Answers Bellows contract A combustion control on a boiler. _______ - Correct Answers controls the air-fuel ratio

Automatic toilets are program to ignite the burner ______ - Correct Answers in low fire ________ Boilers can operate at higher pressures than fire tube boilers - Correct Answers water tube The first step when using a soot blower is ________ - Correct Answers open Steam line drain The purpose of a vent on an open feed water heater is to _______ - Correct Answers remove air and other non-condensable gases Cooling water and steam are in in direct contact with each other in a (n) ________ condenser - Correct Answers surface A boiler with 3450 sq. ft. of heating surface design for 5 sq. ft. of heating surface / BHP has ________ hip - Correct Answers A water column _________ - Correct Answers dampens fluctuating water level A closed feed water heater is always installed. ________ - Correct Answer son the discharge side of the feed water pump _________ is required for combustion - Correct Answers atomization of fuel, oxygen, and Heat Heating value of natural gas is expressed in _______ - Correct Answers herms

• Correct Answers Spelling in a boiler occurs in the_______ - Correct Answers combustion chamber Economizers are used in Plants to _____ - Correct Answers heat feed water using gases of combustion Fuel oil with a high viscosity_______ - Correct Answer it’s hard to pump Boiler water is chemically treated to _____ - Correct Answers prevent scale from forming on the boiler heating surfaces Steam pressure gauges are calibrated in _____ - Correct Answers pounds per square inch Feed water temperature raised 10 degrees Fahrenheit from exhaustion or heat from gases of combustion result in an increase of ________% in plant efficiency - Correct Answers

The evaporation of 34.5 lb. of water from and at 212°f is a standard for ______ - Correct Answers1 bop The tubes in a water tube boiler are fastened by ______ - Correct Answers rolling and expanding in drums and headers A dry pipe separator in a boiler _______ - Correct Answers maintains a high-quality Steam A (n) ________ valve offers the least resistance to flow - Correct Answers gate If valves are installed between the boiler and water column, they must be _______ - Correct Answersos&y or lever-type, locked or chained open Steam withdrawn from a steam turbine under pressure control is __________ Steam - Correct Answers extraction In a closed feed water heater, the_______ - Correct Answers Steam and water do not mix A compound gauge registers ________% - Correct Answers either vacuum or pressure A Norse that analyzer measures _________ in gases of combustion - Correct Answers carbon dioxide, oxygen, and carbon monoxide The pyrite analyzer can be used to measure - Correct Answers oxygen Automatic combustion controls on a boiler control _______ - Correct Answers Fuel and air ratio If the firing rate increases on a boiler equipped with a convection type superheated, the superheated temperature will________ - Correct Answers increase A thermostatic steam trap can be used _________ - Correct Answer son high or low pressure systems Heat that changes the temperature of a substance but not its state is_________ - Correct Answers sensible heat _________is carrying over particles of water with the steam - Correct Answers priming If a boiler is equipped with an automatic non-return valve, it must be _______ - Correct Answers the valve closest to the boiler shell

The diameter of a chimney may have to be increased. ___________ - Correct Answers if the boiler smokes continually Stay bolts are generally used on ______ - Correct Answers fire tube boilers Before draining a boiler, _______ - Correct Answer sallow the setting to cool Cast iron water columns maybe use for pressures up to ______ psi. - Correct Answers All high pressure boilers must have more than one method to determine water level: engaged glass and _______ - Correct Answers try cocks If dry saturated steam at 200 PSI is passing through a reducing valve and is reduced to 25 psi, it is ________ - Correct Answers superheated Three boilers are connected to a common header and each boiler is carrying 100 PSI. The pressure gauge on the header reads. ______ Psi - Correct Answers _______ is caused by allowing sudden extreme changes of temperature in a furnace - Correct Answers palling _________ is always necessary in the combustion process - Correct Answers oxygen Water walls should be blown down ______ - Correct Answers when the furnace is cool An automatic non-return valve is used with a (n) _________^ - Correct Answers boiler Feed water is treated chemically before it enters the boiler drum to ________ - Correct Answers change scale forming salts to a non-adhering sludge