NIULPE Practice Test Exam UPDATED
QUESTIONS AND CORRECT ANSWERS
The most popular name for a variable resistor is a: - CORRECT
ANSWER Potentiometer
All venting of a natural gas train should be vented to: - CORRECT ANSWER Outside
atmosphere
An electric device that uses a primary and secondary coil is a: - CORRECT
ANSWER Transformer
The main function of the flame safe guard system is to: - CORRECT ANSWER Close
the main fuel valve if the flame goes out
Harmonic frequencies are: - CORRECT ANSWER Detrimental to electric equipment
To convert degrees Celsius into Fahrenheit, the formula is: - CORRECT
ANSWER (9/5 x C) + 32
32 degree F is equal to __________C degree: - CORRECT ANSWER 0
Which of the following causes a loss of efficiency in a refrigeration system with an air cooled
condenser: - CORRECT ANSWER Dirty condenser fins
Cold air affects the amount of _______________draft produced: - CORRECT
ANSWER Natural
A siphon fitting protects the steam pressure gauge from: - CORRECT ANSWER High
temperature steam from entering the Bourdon Tube
, According to the ASME Boiler and Pressure Vessel Code, a water column has to be installed
on all steam boilers: - CORRECT ANSWER False
To reduce the free oxygen in the boiler feedwater it must be: - CORRECT
ANSWER Heated and/or chemically treated
The definition of a British Thermal Unit is: - CORRECT ANSWER The amount of
heat required to raise 1 pound of water 1 degree F
A strainer in the suction line pump on a No. 6 fuel oil system should be of ________mesh -
CORRECT ANSWER 16 to 20
When electrons flow: - CORRECT ANSWER One electron knocks another electron
out of orbit
Convert the temperature 365 degree Fahrenheit to Rankin: - CORRECT ANSWER 825
R
When an engineer comes one duty, he should perform an operational inspection to verify that
everything is operating normally. The first item to be checked is: - CORRECT
ANSWER The water level
What should be done if you discover a water leak on the packing gland of the water gauge
glass: - CORRECT ANSWER Turn off the steam and water connection valves, then
draw up the packing
Electric lights are ordinarily wired in: - CORRECT ANSWER Parallel
When shut off valves are used between the boiler and water column: - CORRECT
ANSWER They must be of the outside screw and yoke type valve, locked open
QUESTIONS AND CORRECT ANSWERS
The most popular name for a variable resistor is a: - CORRECT
ANSWER Potentiometer
All venting of a natural gas train should be vented to: - CORRECT ANSWER Outside
atmosphere
An electric device that uses a primary and secondary coil is a: - CORRECT
ANSWER Transformer
The main function of the flame safe guard system is to: - CORRECT ANSWER Close
the main fuel valve if the flame goes out
Harmonic frequencies are: - CORRECT ANSWER Detrimental to electric equipment
To convert degrees Celsius into Fahrenheit, the formula is: - CORRECT
ANSWER (9/5 x C) + 32
32 degree F is equal to __________C degree: - CORRECT ANSWER 0
Which of the following causes a loss of efficiency in a refrigeration system with an air cooled
condenser: - CORRECT ANSWER Dirty condenser fins
Cold air affects the amount of _______________draft produced: - CORRECT
ANSWER Natural
A siphon fitting protects the steam pressure gauge from: - CORRECT ANSWER High
temperature steam from entering the Bourdon Tube
, According to the ASME Boiler and Pressure Vessel Code, a water column has to be installed
on all steam boilers: - CORRECT ANSWER False
To reduce the free oxygen in the boiler feedwater it must be: - CORRECT
ANSWER Heated and/or chemically treated
The definition of a British Thermal Unit is: - CORRECT ANSWER The amount of
heat required to raise 1 pound of water 1 degree F
A strainer in the suction line pump on a No. 6 fuel oil system should be of ________mesh -
CORRECT ANSWER 16 to 20
When electrons flow: - CORRECT ANSWER One electron knocks another electron
out of orbit
Convert the temperature 365 degree Fahrenheit to Rankin: - CORRECT ANSWER 825
R
When an engineer comes one duty, he should perform an operational inspection to verify that
everything is operating normally. The first item to be checked is: - CORRECT
ANSWER The water level
What should be done if you discover a water leak on the packing gland of the water gauge
glass: - CORRECT ANSWER Turn off the steam and water connection valves, then
draw up the packing
Electric lights are ordinarily wired in: - CORRECT ANSWER Parallel
When shut off valves are used between the boiler and water column: - CORRECT
ANSWER They must be of the outside screw and yoke type valve, locked open
