NJ BLACK SEAL EXAM PREP VERSION 3
2026/2027 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |CURRENTLY TESTING
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST |JUST
RELEASED!!|GUARANTEED PASS
In a high pressure steam plant, in which type of condenser would the cooling water and steam
come into direct contact?
An open type
On a turbine driven feedwater pump, identify which two pipes are larger
Turbine steam exhaust and suction lines
What would be over speed trip setting on a turbine with a normal operating speed of 1770
RPM?
1947 (10%)
Shrouds are found on what piece of auxiliary equipment?
Steam turbines
Where in a boiler system would you find a cyclone separator?
In the steam drum
Which of the following best describes the operation of a surface condenser?
Cooling water flows through tubes surrounded by exhaust system
Which of the following auxiliary equipment would you find an atmospheric relief valve?
A turbine condenser
Which of the following devices would be found on the inlet line of a steam turbine?
Atmospheric relief valve
1|Page
,Which of the following would cause a superheater tube to overheat?
Dirty tube
What type of valve is shown?
NON rising stem gate valve
What would the valve position be if the valve actuator has a reduction in air pressure?
More closed
After an adjustment of the packing gland on a valve that had a minor packing leak, the operator
attempts to operate the valve but finds it stuck. What is the most probable cause?
The operator overtightened the packing, causing the stem to bind.
What pressure must be exceeded in order for a high pressure valve to have the arrangement of
the small valve shown below?
100 PSI
In a cooling water system when comparing a 3 inch gate valve to a 3 inch globe valve used for
the same application in the process.
The globe valve produces the larger head loss and the smaller flow rate.
The purpose of back seating a manual valve in an operating system us to?
Isolate system pressure from the packing stuffing box to minimize packing leakage.
When a discharge valve is opened to the atmosphere, the pressure on the up stream side of the
valve will
Decrease, and the pressure on the downstream side will stay the same.
When comparing globe valve and gate valve in the same application, the gate valve has a
_______ pressure drop when fully open and the is the ______ choice for throttling
Lower: Poorer
Which of the following is generally accepted method for locally verifying that a manual valve is
fully close in a depressurized static piping system?
Attempt to turn the valve hand wheel in the fully closed direction and verify no movement.
Which of the following is not a function of a non return valve?
Opens automatically if the boiler operating pressure drops below the header pressure.
2|Page
, Which of the following types of similarly sized valves in an operating water system produces
that least frictional head loss when fully open?
Ball valves
Which of the following types of similarly sized valves require most manual valve stem rotation
to move the valve.
Gate Valve
Which one of the following statements is the generally an accepted method to verify at the local
level that a manual valve is fully closed on a statin piping system that is in the depressurized
condition?
As an operator you would attempt to turn the hand wheel in the closed direction to verify no
movement.
The voltage of an ignition transformer is created and travels to electrodes. Wheat holds and
protects the electrodes in place?
The electrodes are held in place by a bracket.
Identify the typical origin of the line at point A
This line is the main gas line from the utility supplier.
What is the BTU content of natural gas?
100,000 btu/therm
What would high pressure differential across a fuel oil strainer set indicate?
A dirty fuel oil strainer
What are two elements in a fuel oil that produce most of its heat?
Carbon and hydrogen
The term viscosity can be best defined as?
The point at which oil starts to flow
Which formula would you use to calculate BTU/LB heat content of fuel oil?
17,687+57.7XAPI@60 degrees F
Which of the following best defines the ratio of total heat supplied by the fuel to the total heat
absorbed by a boiler?
3|Page
2026/2027 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |CURRENTLY TESTING
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST |JUST
RELEASED!!|GUARANTEED PASS
In a high pressure steam plant, in which type of condenser would the cooling water and steam
come into direct contact?
An open type
On a turbine driven feedwater pump, identify which two pipes are larger
Turbine steam exhaust and suction lines
What would be over speed trip setting on a turbine with a normal operating speed of 1770
RPM?
1947 (10%)
Shrouds are found on what piece of auxiliary equipment?
Steam turbines
Where in a boiler system would you find a cyclone separator?
In the steam drum
Which of the following best describes the operation of a surface condenser?
Cooling water flows through tubes surrounded by exhaust system
Which of the following auxiliary equipment would you find an atmospheric relief valve?
A turbine condenser
Which of the following devices would be found on the inlet line of a steam turbine?
Atmospheric relief valve
1|Page
,Which of the following would cause a superheater tube to overheat?
Dirty tube
What type of valve is shown?
NON rising stem gate valve
What would the valve position be if the valve actuator has a reduction in air pressure?
More closed
After an adjustment of the packing gland on a valve that had a minor packing leak, the operator
attempts to operate the valve but finds it stuck. What is the most probable cause?
The operator overtightened the packing, causing the stem to bind.
What pressure must be exceeded in order for a high pressure valve to have the arrangement of
the small valve shown below?
100 PSI
In a cooling water system when comparing a 3 inch gate valve to a 3 inch globe valve used for
the same application in the process.
The globe valve produces the larger head loss and the smaller flow rate.
The purpose of back seating a manual valve in an operating system us to?
Isolate system pressure from the packing stuffing box to minimize packing leakage.
When a discharge valve is opened to the atmosphere, the pressure on the up stream side of the
valve will
Decrease, and the pressure on the downstream side will stay the same.
When comparing globe valve and gate valve in the same application, the gate valve has a
_______ pressure drop when fully open and the is the ______ choice for throttling
Lower: Poorer
Which of the following is generally accepted method for locally verifying that a manual valve is
fully close in a depressurized static piping system?
Attempt to turn the valve hand wheel in the fully closed direction and verify no movement.
Which of the following is not a function of a non return valve?
Opens automatically if the boiler operating pressure drops below the header pressure.
2|Page
, Which of the following types of similarly sized valves in an operating water system produces
that least frictional head loss when fully open?
Ball valves
Which of the following types of similarly sized valves require most manual valve stem rotation
to move the valve.
Gate Valve
Which one of the following statements is the generally an accepted method to verify at the local
level that a manual valve is fully closed on a statin piping system that is in the depressurized
condition?
As an operator you would attempt to turn the hand wheel in the closed direction to verify no
movement.
The voltage of an ignition transformer is created and travels to electrodes. Wheat holds and
protects the electrodes in place?
The electrodes are held in place by a bracket.
Identify the typical origin of the line at point A
This line is the main gas line from the utility supplier.
What is the BTU content of natural gas?
100,000 btu/therm
What would high pressure differential across a fuel oil strainer set indicate?
A dirty fuel oil strainer
What are two elements in a fuel oil that produce most of its heat?
Carbon and hydrogen
The term viscosity can be best defined as?
The point at which oil starts to flow
Which formula would you use to calculate BTU/LB heat content of fuel oil?
17,687+57.7XAPI@60 degrees F
Which of the following best defines the ratio of total heat supplied by the fuel to the total heat
absorbed by a boiler?
3|Page
