STATIONARY ENGINEER LOCAL 99
ACTUAL EXAM SCRIPT 2026 QUESTIONS
WITH COMPLETE SOLUTIONS VERIFIED
GRADED A+
⩥ An ignition arch is used with a(n) ________________ stoker
A. sidefeed
B. spreader
C. underfeed
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
_________________
ACTUAL EXAM SCRIPT 2026 QUESTIONS
WITH COMPLETE SOLUTIONS VERIFIED
GRADED A+
⩥ An ignition arch is used with a(n) ________________ stoker
A. sidefeed
B. spreader
C. underfeed
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
_________________
