STATIONARY ENGINEER FINAL FINAL TEST
2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ Carbon dioxide ( CO2) in the flue gas indicates.....
Answer: Complete combustion
◍ The sudden surge caused by an abrupt change in the speed of the pumps in a
closed liquid piping system is USUALLY called.
Answer: water hammer
◍ The insulation on high voltage cables must be capable of resisting the gas
sometimes produced by electrical action in a vicinity of high voltage..
Answer: ozone
◍ Rank refers to the __________ of the coal.
Answer: Degree of Hardness
◍ A lantern ring is a type of.
Answer: sealing arrangement used to minimize air leakage between a
rotating shaft and a sleeve
◍ Light and a photoelectric cell are sometimes used to indicate.
Answer: smoke density
◍ In the event of a flame failure, the programmer will______.
Answer: Secure the fuel, purge the firebox, and then shut down
◍ A Stillson nipple that is thread over its entire length is called a
_____________ nipple..
Answer: pipe
◍ An ADVANTAGE of a rotary pump over a centrifugal pump is that the
rotary pump is.
, Answer: self priming and required no valves
◍ After repairs to the electrical supply, a three phase, 3 wire, AC wound rotor
induction motor is found to rotate in the wrong direction. In order to reverse
the direction of rotation, it is necessary to.
Answer: reverse any two supply lines connected to the stator
◍ Rotary pump use what to turn?.
Answer: Gears
◍ The automatic nonreturn valve protects what.....
Answer: The system in the event of a large steam leak on any boiler
◍ 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
◍ The terminal voltage of a DC shunt generator having an armature current of
100 amperes, an armature resistance of 0.02 ohms, and a generated
E. M.F of 222 volts is MOST NEARLY ______________ volts..
Answer: 220
◍ A device that can be used to check the conditions o the electrolyte in a
storage battery is the.
Answer: hydrometer
◍ The scanner is sensitive to.....
Answer: Infrared or ultraviolet rays
◍ Assume that three 12 ohm resistances are connected in wye across a 208
volt, 3 phase circuit. The power, in watts, dissipated in this resistance load
will be MOST NEARLY.
Answer: 3600
◍ The MAIN function of diffusers in sewage treatment plants is to.
Answer: release compressed air into the sewage
◍ A boiler horsepower is defined as.
Answer: The Evaporation of 34.5 pounds of water per hour and at feed
, water temp of 212 degrees
◍ Assume that you and your supervisor are on an inspectional tour of the
outdoor equipment of the plant and that a co worker suddenly falls
unconscious on the pavement. If, on close observation, you find that the
victim is not breathing, the FIRST thing to do is.
Answer: administer first aid and restore breathing
◍ The cold lime-soda process softens the boiler water at?.
Answer: Ambient Temperature
◍ A 30 ohms resistor is placed in parallel with an inductor that has an
inductive reactance of 40 ohms. If 120 volts AC is impressed across the
parallel combination, the total current drawn from the 120 volt AC line is
____________ amps..
Answer: 5.0
◍ What valves should be used for throttling services?.
Answer: Globe Valve
◍ Detergents are used in lubricating oils to.
Answer: keep insoluble matter in suspension
◍ What is the three types of fire tubs boilers?.
Answer: 1. Horizontal Return Tubular Boiler2. Scotch Marine Boiler3.
Vertical Firetube Boiler
◍ Compressor does what?.
Answer: Changes low pressure gas to a high pressure liquid
◍ Thermocouples measure....
Answer: Temperature
◍ Flow meters measure the rate of flow of.....
Answer: A variety of fluids
◍ Spalling in a boiler refers to.
Answer: Hairline cracks in the refractory
, ◍ Of the following terms, the one which does NOT describe a way of finishing
the ends of a rope is the.
Answer: bight
◍ The TOTAL number of 4 inch diameter pipe that is required to equal the
water flow capacity of an 8 inch diameter pipe (negating friction) is.
Answer: 4
◍ The types of variable area flow meters are.... (2 Answers).
Answer: Rotometer and Valve
◍ Of the following types of pumps, the one NOT generally used as a diesel
fuel transfer pump is the _______________ type..
Answer: reciprocating
◍ Small by-pass lines are sometimes furnished around large gate valves
MAINLY to.
Answer: balance the pressure on the gate when the valve is being opened
◍ Most thermometers used in a steam plant are calibrated in what?.
Answer: Degrees/ Fahrenheit
◍ The four elements that must be regulated in a combustion controlled system
are....
Answer: Fuel supply, air supply, ratio of air to fuel, removal of combustion
gases
◍ The tool indicated at the right is referred to as an arch punch. This tool
should be used to.
Answer: make the holes in rubber or leather gasket material
◍ What amount is atmospheric pressure?.
Answer: 14.7
◍ When transformers are to be operated in parallel, it is NOT necessary that
the transformer have the same.
Answer: KVA rating
◍ Natural water may contain.....
2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ Carbon dioxide ( CO2) in the flue gas indicates.....
Answer: Complete combustion
◍ The sudden surge caused by an abrupt change in the speed of the pumps in a
closed liquid piping system is USUALLY called.
Answer: water hammer
◍ The insulation on high voltage cables must be capable of resisting the gas
sometimes produced by electrical action in a vicinity of high voltage..
Answer: ozone
◍ Rank refers to the __________ of the coal.
Answer: Degree of Hardness
◍ A lantern ring is a type of.
Answer: sealing arrangement used to minimize air leakage between a
rotating shaft and a sleeve
◍ Light and a photoelectric cell are sometimes used to indicate.
Answer: smoke density
◍ In the event of a flame failure, the programmer will______.
Answer: Secure the fuel, purge the firebox, and then shut down
◍ A Stillson nipple that is thread over its entire length is called a
_____________ nipple..
Answer: pipe
◍ An ADVANTAGE of a rotary pump over a centrifugal pump is that the
rotary pump is.
, Answer: self priming and required no valves
◍ After repairs to the electrical supply, a three phase, 3 wire, AC wound rotor
induction motor is found to rotate in the wrong direction. In order to reverse
the direction of rotation, it is necessary to.
Answer: reverse any two supply lines connected to the stator
◍ Rotary pump use what to turn?.
Answer: Gears
◍ The automatic nonreturn valve protects what.....
Answer: The system in the event of a large steam leak on any boiler
◍ 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
◍ The terminal voltage of a DC shunt generator having an armature current of
100 amperes, an armature resistance of 0.02 ohms, and a generated
E. M.F of 222 volts is MOST NEARLY ______________ volts..
Answer: 220
◍ A device that can be used to check the conditions o the electrolyte in a
storage battery is the.
Answer: hydrometer
◍ The scanner is sensitive to.....
Answer: Infrared or ultraviolet rays
◍ Assume that three 12 ohm resistances are connected in wye across a 208
volt, 3 phase circuit. The power, in watts, dissipated in this resistance load
will be MOST NEARLY.
Answer: 3600
◍ The MAIN function of diffusers in sewage treatment plants is to.
Answer: release compressed air into the sewage
◍ A boiler horsepower is defined as.
Answer: The Evaporation of 34.5 pounds of water per hour and at feed
, water temp of 212 degrees
◍ Assume that you and your supervisor are on an inspectional tour of the
outdoor equipment of the plant and that a co worker suddenly falls
unconscious on the pavement. If, on close observation, you find that the
victim is not breathing, the FIRST thing to do is.
Answer: administer first aid and restore breathing
◍ The cold lime-soda process softens the boiler water at?.
Answer: Ambient Temperature
◍ A 30 ohms resistor is placed in parallel with an inductor that has an
inductive reactance of 40 ohms. If 120 volts AC is impressed across the
parallel combination, the total current drawn from the 120 volt AC line is
____________ amps..
Answer: 5.0
◍ What valves should be used for throttling services?.
Answer: Globe Valve
◍ Detergents are used in lubricating oils to.
Answer: keep insoluble matter in suspension
◍ What is the three types of fire tubs boilers?.
Answer: 1. Horizontal Return Tubular Boiler2. Scotch Marine Boiler3.
Vertical Firetube Boiler
◍ Compressor does what?.
Answer: Changes low pressure gas to a high pressure liquid
◍ Thermocouples measure....
Answer: Temperature
◍ Flow meters measure the rate of flow of.....
Answer: A variety of fluids
◍ Spalling in a boiler refers to.
Answer: Hairline cracks in the refractory
, ◍ Of the following terms, the one which does NOT describe a way of finishing
the ends of a rope is the.
Answer: bight
◍ The TOTAL number of 4 inch diameter pipe that is required to equal the
water flow capacity of an 8 inch diameter pipe (negating friction) is.
Answer: 4
◍ The types of variable area flow meters are.... (2 Answers).
Answer: Rotometer and Valve
◍ Of the following types of pumps, the one NOT generally used as a diesel
fuel transfer pump is the _______________ type..
Answer: reciprocating
◍ Small by-pass lines are sometimes furnished around large gate valves
MAINLY to.
Answer: balance the pressure on the gate when the valve is being opened
◍ Most thermometers used in a steam plant are calibrated in what?.
Answer: Degrees/ Fahrenheit
◍ The four elements that must be regulated in a combustion controlled system
are....
Answer: Fuel supply, air supply, ratio of air to fuel, removal of combustion
gases
◍ The tool indicated at the right is referred to as an arch punch. This tool
should be used to.
Answer: make the holes in rubber or leather gasket material
◍ What amount is atmospheric pressure?.
Answer: 14.7
◍ When transformers are to be operated in parallel, it is NOT necessary that
the transformer have the same.
Answer: KVA rating
◍ Natural water may contain.....
