Niulpe Class 3 Exam UPDATED
QUESTIONS AND CORRECT ANSWERS
When sufficient blowing down time has elapsed,
a. first close the quick opening valve, then close the slow opening valve
b. first close the slow opening valve, then close the quick opening valve
c. close the quick opening valve only because the slow opening valve remains open at all
times
d. none of the above - CORRECT ANSWER b. first close the slow opening valve, then
close the quick opening valve
Sludge accumulation in a boiler is best regulated by..
a. chemical treatment
b. boiler rating
c. water quality
d. blowdown - CORRECT ANSWER d. blowdown
When an engineer comes on duty he should perform an operational inspection to satisfy
himself that everything is operating normally. The first item below that should be checked is..
a. the steam pressure
b. the water level
c. the low water cut-offs and boiler feed equipment
d. the boilers for any leaks, or other condition that may affect the plant operation -
CORRECT ANSWER b. the water level
Boiler tubes are measured by the..
, a. outside diameter
b. circumference
c. inside diameter
d. shape - CORRECT ANSWER a. outside diameter
The three basic forms of heat transfer are..
a. radiation, air flow, lumens
b. conduction, radiation, combustion
c. radiation, convection, conduction
d. combustion, convection, conduction - CORRECT ANSWER c. radiation,
convection, conduction
When the gauge glass is broken, the water level in the boiler can be determined by..
a. checking the steam pressure
b. opening and closing the blowdown valves
c. opening and closing a set of try cocks
d. all of the above - CORRECT ANSWER c. opening and closing a set of try cocks
Good combustion with natural gas is generally indicated by..
a. yellow flame
b. red flame
c. blue flame
d. green flame - CORRECT ANSWER c. blue flame
The 3 T's of combustion are..
QUESTIONS AND CORRECT ANSWERS
When sufficient blowing down time has elapsed,
a. first close the quick opening valve, then close the slow opening valve
b. first close the slow opening valve, then close the quick opening valve
c. close the quick opening valve only because the slow opening valve remains open at all
times
d. none of the above - CORRECT ANSWER b. first close the slow opening valve, then
close the quick opening valve
Sludge accumulation in a boiler is best regulated by..
a. chemical treatment
b. boiler rating
c. water quality
d. blowdown - CORRECT ANSWER d. blowdown
When an engineer comes on duty he should perform an operational inspection to satisfy
himself that everything is operating normally. The first item below that should be checked is..
a. the steam pressure
b. the water level
c. the low water cut-offs and boiler feed equipment
d. the boilers for any leaks, or other condition that may affect the plant operation -
CORRECT ANSWER b. the water level
Boiler tubes are measured by the..
, a. outside diameter
b. circumference
c. inside diameter
d. shape - CORRECT ANSWER a. outside diameter
The three basic forms of heat transfer are..
a. radiation, air flow, lumens
b. conduction, radiation, combustion
c. radiation, convection, conduction
d. combustion, convection, conduction - CORRECT ANSWER c. radiation,
convection, conduction
When the gauge glass is broken, the water level in the boiler can be determined by..
a. checking the steam pressure
b. opening and closing the blowdown valves
c. opening and closing a set of try cocks
d. all of the above - CORRECT ANSWER c. opening and closing a set of try cocks
Good combustion with natural gas is generally indicated by..
a. yellow flame
b. red flame
c. blue flame
d. green flame - CORRECT ANSWER c. blue flame
The 3 T's of combustion are..
