1st Class Stationary Engineers Examination Questions And Answers 100% Solved

1st Class Stationary Engineers Examination Questions And Answers 100% Solved Deaerator - answerA Device used to remove oxygen from boiler feedwater The term "quality of steam" has to do with steams - answerMoisture content A sleeve is used on the shaft of a centrifugal pump to - answerProtect the shaft The purpose of an adjusting ring on a safety value is to - answerRegulate the amount of steam exhausted The maximum wattage allowed on a 30 ampere fuse is (supply line is 115 volts) - answerW = V x I W = 115 x 30 W = 3450 watts A tachometer is used to measure - answerRevolution per minute If a Fahrenheit thermometer registered 100 degrees, what would be the reading on a centigrade scale? - answerC = (F-32) / 1.8 C = (100-32)/1.8 C = 37.8 Degree C Which of the following types of boilers are best suited for high ratings? - answerwater tube boilers A warm air furnace duct transfers heat to a room by means of - answerConvection If a pressure gauge indicated a pressure of 20 PSI, what would be the absolute pressure per square inch? - answerPSIA = PSIG +14.7 PSIA = 20 + 14.7 PSIA = 34.7 PSI If a ton of coal contains 400 lbs. of ash, what percent of the coal is ash? - answer20% The liquid or fluid used to clean an air compressor should have a - answerHigh Fire point Which of the following types of air compressor makes use of an inter-cooler - answerReciprocating The proper extinguisher to use on an electrical fire in an operating electric motor is - answerCarbon dioxide An objectionable chemical found in fuel oil is - answerSulphur Specific gravity can be measured by the use of a - answerhydrometer Normally the outlet water from a ziolite softaner should show a hardness reading of - answerZero Economizers in large steam plants are generally used to - answerIncrease the temperature of the feed water One of the major advantages of the horizontal rotary oil burner is that - answerThe shape of the fire can be controlled by the shape of the cup The speed of a centrifugal pump driven by a certain induction motor is increased 10%, the quantity of water pumped will then be increased by approximately - answer10% A method of determining when a fuel oil suction strainer should be cleaned is to clean it as soon as - answerThe pressure drop across the strainer becomes excessive In order to "soften" feedwater before it enters the boiler, the following chemicals are usually used - answerLime and soda ash In a steam plant, the fue gases pass through the equipment (1) superheater (2) economizer (3) induced draft fan (4) boiler (5) air heater, in the following order - answer4-1-3-2-5 The main reason for recirculating heavy fuel oil before starting a fuel oil burner is to - answerBuild up the temperature of the oil. If the flame in the combustion chamber of an oil fired boiler (Mechanical pressure type burner) smokes badly, the direct cause is most likely - answerinsufficient combustion air A "Flame rod" Could be used on a gas fire boiler to - answerShut down the burner on flame failure The bottom of the water glass is located how many inches above the top row of tubes in a locomotive type boiler? - answer3 Balanced draft in a coal fired boiler is usually - answer0.5 inches If a boiler contained 2000 Square feet of heating surface, its horsepower rating would be approximately - answer200 The main difference between the direct and indirect system of refrigeration is that the direct system uses only a refrigerant and the indirect system uses refrigerant and - answerbrine