FE Mechanical Conceptual Problems
2026/2027 | NCEES Fundamentals of
Engineering | Latest Update | Practice
Questions & Detailed Solutions
In a hydraulic system, the ratio of the change in stored volume to the change in
pressure is known as the fluid
(A) inductance
(B) impedance
(C) compliance
(D) inertance - correct answer-C
Which formula is NOT used to calculate pipe wall thickness in a hydraulic
mechanism?
(A) Boardman Formula
(B) Barlow Formula
(C) Lame formula
(D) Joukowsky formula - correct answer-D
Which type of valve is represented by the fluid power circuit symbol shown?
,\O/
(A) nonreturn valve
(B) pressure reducing valve
(C) solenoid-actuated servo valve
(D) shut-off - correct answer-A
A flexible hose is pressurized to more than 1.7 MPa. What is most nearly the
working pressure when taken as a percentage of the burst pressure?
(A) 5.0%
(B) 10%
(C) 25%
(D) 50% - correct answer-C
As it relates to hydraulic components, what does the acronym NPTF mean?
(A) Non-pressurized Torque Fitting
(B) New Pipe Thermal Fitting
(C) National Pipe Thread for Fuel
(D) Negative Pressure Transfer Fitting - correct answer-C
Generally, what is the flare angle for flare fittings used for high-pressure
applications?
,(A) 30 Degrees
(B) 37 Degrees
(C) 45 Degrees
(D) 60 Degrees - correct answer-B
Which of the following hydraulic components generally determines the pressure
at which the hose can operate?
(A) covering
(B) reinforcement
(C) end fitting
(D) tubing - correct answer-B
Which of the following fitting types does NOT require O-rings?
(A) bossed
(B) flared
(C) flat-faced
(D) flanged - correct answer-B
What are the basic components of a hydraulic system?
I. fluid
II. reservoir
, III. pump
IV. lines
V. valves
VI. actuator
(A) I, II, III, and IV
(B) III, V, and VI
(C) III, IV, V, and VI
(D) I, II, III, IV, V, and VI - correct answer-D
Which of the following components is NOT part of a pneumatic system?
(A) pump
(B) line
(C) valve
(D) actuator - correct answer-A
In an existing pneumatic application, a larger force is required to overcome
increase friction in an aging component. The most likely method of obtaining a
larger force is increasing the
(A) working pressure
(B) cylinder size
(C) tubing/line diameter
(D) actuator stroke length - correct answer-B
2026/2027 | NCEES Fundamentals of
Engineering | Latest Update | Practice
Questions & Detailed Solutions
In a hydraulic system, the ratio of the change in stored volume to the change in
pressure is known as the fluid
(A) inductance
(B) impedance
(C) compliance
(D) inertance - correct answer-C
Which formula is NOT used to calculate pipe wall thickness in a hydraulic
mechanism?
(A) Boardman Formula
(B) Barlow Formula
(C) Lame formula
(D) Joukowsky formula - correct answer-D
Which type of valve is represented by the fluid power circuit symbol shown?
,\O/
(A) nonreturn valve
(B) pressure reducing valve
(C) solenoid-actuated servo valve
(D) shut-off - correct answer-A
A flexible hose is pressurized to more than 1.7 MPa. What is most nearly the
working pressure when taken as a percentage of the burst pressure?
(A) 5.0%
(B) 10%
(C) 25%
(D) 50% - correct answer-C
As it relates to hydraulic components, what does the acronym NPTF mean?
(A) Non-pressurized Torque Fitting
(B) New Pipe Thermal Fitting
(C) National Pipe Thread for Fuel
(D) Negative Pressure Transfer Fitting - correct answer-C
Generally, what is the flare angle for flare fittings used for high-pressure
applications?
,(A) 30 Degrees
(B) 37 Degrees
(C) 45 Degrees
(D) 60 Degrees - correct answer-B
Which of the following hydraulic components generally determines the pressure
at which the hose can operate?
(A) covering
(B) reinforcement
(C) end fitting
(D) tubing - correct answer-B
Which of the following fitting types does NOT require O-rings?
(A) bossed
(B) flared
(C) flat-faced
(D) flanged - correct answer-B
What are the basic components of a hydraulic system?
I. fluid
II. reservoir
, III. pump
IV. lines
V. valves
VI. actuator
(A) I, II, III, and IV
(B) III, V, and VI
(C) III, IV, V, and VI
(D) I, II, III, IV, V, and VI - correct answer-D
Which of the following components is NOT part of a pneumatic system?
(A) pump
(B) line
(C) valve
(D) actuator - correct answer-A
In an existing pneumatic application, a larger force is required to overcome
increase friction in an aging component. The most likely method of obtaining a
larger force is increasing the
(A) working pressure
(B) cylinder size
(C) tubing/line diameter
(D) actuator stroke length - correct answer-B
