STATIONARY ENGINEER LOCAL 99 EXAM WITH QUESTIONS AND ANSWERS

STATIONARY ENGINEER LOCAL 99 EXAM WITH QUESTIONS AND ANSWERS In a reciprocating feedwater pump, the _______________ A. water piston is larger than the steam piston B. water and steam piston are the same size C. steam piston is larger than the water piston D. steam valve has to be as large as the water valve - ANSWER C. steam piston is larger than the water piston An ignition arch is used with a(n) ________________ stoker A. sidefeed B. spreader C. underfe ed D. chain grate - ANSWER D. Chain grate The try cocks on a water column are used ___________________ A. as a secondary means of determining the water level B. to blow down the water column C. as sampling cocks for water testing D. to remove impurities from the surface of the water - ANSWER A. as a secondary means of determining the water level The throttling calorimeter determines ____________________ A. heat in the condensate B. saturated steam temperature C. superheated steam temperature D. the amount of moisture in the steam - ANSWER D. the amount of moisture in the steam In a plant that used forced draft, the pressure at the base of the chimney is ________________ pressure. A. at atmospheric B. above atmospheric C. below atmospheric D. none of the above - ANSWER C. below atmospheric A stop-and-check valve is installed in the ____________________ A. main steam header B. outlet superheater C. blowdown line D. feedwater line - ANSWER D. feedwater line Staybolts are most commonly used in __________________ boilers A. fire tube B. water tube C. bent-tube D. cast iron sectional - ANSWER A. fire tube Thermocouples measure ____________________ A. gauge pressure B. absolute pressure C. temperature D. heat - ANSWER D. Heat The rotometer flow meter consists of a ______________________ A. ball in a straight tube B. ball in a tapered tube C. straight tube D. tapered tube - ANSWER B. ball in a tapered tube A Ringelmann chart is used to determine _________________________ A. atmospheric conditions B. smoke density C. combustion efficiency D. fuel oil density - ANSWER B. smoke density Boiler water having high alkalinity could develop __________________ _ A. scale B. oxygen pitting C. caustic embrittlement D. warping - ANSWER C. caustic embrittlement Scale buildup on the water side of a steam boiler is caused by ____________ A. an impure water supply B. scale in the raw water C. improper boiler water treatment D. scale is found only on the fire side of the boiler - ANSWER C. improper boiler water treatment Oxygen present in the the boiler water is removed by _________________ A. heating the feedwater and using sodium sulfite B. heating the feedwater only C. using the bottom blowdown valves D. using the surface blowdown valves - ANSWER A. heating the feedwater and using sodium sulfate In a balanced draft system, the pressure in the furnace is approximately ____________________ A. +0.1 inches of water B. -0.1 inches of water C. atmospheric D. atmospheric plus gauge - ANSWER C. atmospheric Economizers are used in large plants so that __________________________ A. the dew point can be lowered B. impure feedwater can be used C. higher flue gas temperature can be maintained D. heat from the gases of combustion can be reclaimed - ANSWER D. heat from the gases of combustion can be reclaimed If the discharge valve of a centrifugal pump is closed when the pump is running, the _________________ A. pressure will increase indefinitely B. relief valve will open C. pressure will increase a fixed amount