1ST CLASS STATIONARY ENGINEERS EXAMINATION
/Deaerator - Answer-A Device used to remove oxygen from boiler feedwater
/.The term "quality of steam" has to do with steams - Answer-Moisture content
/.A sleeve is used on the shaft of a centrifugal pump to - Answer-Protect the shaft
/.The purpose of an adjusting ring on a safety value is to - Answer-Regulate the amount
of steam exhausted
/.The maximum wattage allowed on a 30 ampere fuse is (supply line is 115 volts) -
Answer-W = V x I
W = 115 x 30
W = 3450 watts
/.A tachometer is used to measure - Answer-Revolution per minute
/.If a Fahrenheit thermometer registered 100 degrees, what would be the reading on a
centigrade scale? - Answer-C = (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? - Answer-water
tube boilers
/.A warm air furnace duct transfers heat to a room by means of - Answer-Convection
/.If a pressure gauge indicated a pressure of 20 PSI, what would be the absolute
pressure per square inch? - Answer-PSIA = 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? - Answer-20%
/.The liquid or fluid used to clean an air compressor should have a - Answer-High Fire
point
/.Which of the following types of air compressor makes use of an inter-cooler - Answer-
Reciprocating
/.The proper extinguisher to use on an electrical fire in an operating electric motor is -
Answer-Carbon dioxide
, /.An objectionable chemical found in fuel oil is - Answer-Sulphur
/.Specific gravity can be measured by the use of a - Answer-hydrometer
/.Normally the outlet water from a ziolite softaner should show a hardness reading of -
Answer-Zero
/.Economizers in large steam plants are generally used to - Answer-Increase the
temperature of the feed water
/.One of the major advantages of the horizontal rotary oil burner is that - Answer-The
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 - Answer-10%
/.A method of determining when a fuel oil suction strainer should be cleaned is to clean
it as soon as - Answer-The pressure drop across the strainer becomes excessive
/.In order to "soften" feedwater before it enters the boiler, the following chemicals are
usually used - Answer-Lime 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 - Answer-
4-1-3-2-5
/.The main reason for recirculating heavy fuel oil before starting a fuel oil burner is to -
Answer-Build 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 - Answer-insufficient combustion
air
/.A "Flame rod" Could be used on a gas fire boiler to - Answer-Shut 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? - Answer-3
/.Balanced draft in a coal fired boiler is usually - Answer-0.5 inches
/.If a boiler contained 2000 Square feet of heating surface, its horsepower rating would
be approximately - Answer-200
/Deaerator - Answer-A Device used to remove oxygen from boiler feedwater
/.The term "quality of steam" has to do with steams - Answer-Moisture content
/.A sleeve is used on the shaft of a centrifugal pump to - Answer-Protect the shaft
/.The purpose of an adjusting ring on a safety value is to - Answer-Regulate the amount
of steam exhausted
/.The maximum wattage allowed on a 30 ampere fuse is (supply line is 115 volts) -
Answer-W = V x I
W = 115 x 30
W = 3450 watts
/.A tachometer is used to measure - Answer-Revolution per minute
/.If a Fahrenheit thermometer registered 100 degrees, what would be the reading on a
centigrade scale? - Answer-C = (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? - Answer-water
tube boilers
/.A warm air furnace duct transfers heat to a room by means of - Answer-Convection
/.If a pressure gauge indicated a pressure of 20 PSI, what would be the absolute
pressure per square inch? - Answer-PSIA = 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? - Answer-20%
/.The liquid or fluid used to clean an air compressor should have a - Answer-High Fire
point
/.Which of the following types of air compressor makes use of an inter-cooler - Answer-
Reciprocating
/.The proper extinguisher to use on an electrical fire in an operating electric motor is -
Answer-Carbon dioxide
, /.An objectionable chemical found in fuel oil is - Answer-Sulphur
/.Specific gravity can be measured by the use of a - Answer-hydrometer
/.Normally the outlet water from a ziolite softaner should show a hardness reading of -
Answer-Zero
/.Economizers in large steam plants are generally used to - Answer-Increase the
temperature of the feed water
/.One of the major advantages of the horizontal rotary oil burner is that - Answer-The
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 - Answer-10%
/.A method of determining when a fuel oil suction strainer should be cleaned is to clean
it as soon as - Answer-The pressure drop across the strainer becomes excessive
/.In order to "soften" feedwater before it enters the boiler, the following chemicals are
usually used - Answer-Lime 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 - Answer-
4-1-3-2-5
/.The main reason for recirculating heavy fuel oil before starting a fuel oil burner is to -
Answer-Build 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 - Answer-insufficient combustion
air
/.A "Flame rod" Could be used on a gas fire boiler to - Answer-Shut 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? - Answer-3
/.Balanced draft in a coal fired boiler is usually - Answer-0.5 inches
/.If a boiler contained 2000 Square feet of heating surface, its horsepower rating would
be approximately - Answer-200
