NEW YORK PROFESSIONAL ENGINEER EXAM (PE)
ACTUAL EXAM 2026/2027 COMPLETE ACCURATE EXAM
REAL QUESTIONS WITH WELL ELABORATED ANSWERS
AND RATIONALES. (100% CORRECT VERIFIED SOLUTIONS)
1. What is the primary purpose of a factor of safety in engineering design?
a) Increase cost
b) Ensure reliability
c) Reduce weight
d) Simplify calculations
Answer: b) Ensure reliability
Rationale: A factor of safety accounts for uncertainties in material properties, loads, and
conditions to ensure safe performance.
2. Which law states that stress is proportional to strain within the elastic limit?
a) Newton’s Law
b) Hooke’s Law
c) Ohm’s Law
d) Bernoulli’s Principle
Answer: b) Hooke’s Law
Rationale: Hooke’s Law defines the linear relationship between stress and strain in elastic
materials.
3. The unit of power in the SI system is:
a) Joule
b) Watt
c) Newton
d) Pascal
Answer: b) Watt
Rationale: Power is the rate of energy transfer, measured in watts (J/s).
4. What is the derivative of displacement with respect to time?
a) Acceleration
b) Velocity
c) Force
d) Momentum
Answer: b) Velocity
Rationale: Velocity is defined as the rate of change of displacement over time.
, 5. Which material property indicates resistance to deformation?
a) Density
b) Elastic modulus
c) Conductivity
d) Viscosity
Answer: b) Elastic modulus
Rationale: Elastic modulus measures stiffness and resistance to deformation.
6. What is the SI unit of pressure?
a) Watt
b) Pascal
c) Joule
d) Volt
Answer: b) Pascal
Rationale: Pressure is force per unit area, measured in Pascals (N/m²).
7. In fluid mechanics, what does Reynolds number indicate?
a) Pressure loss
b) Flow regime
c) Energy efficiency
d) Temperature gradient
Answer: b) Flow regime
Rationale: Reynolds number determines whether flow is laminar or turbulent.
8. Which law governs conservation of energy?
a) First Law of Thermodynamics
b) Second Law
c) Newton’s Law
d) Kirchhoff’s Law
Answer: a) First Law of Thermodynamics
Rationale: It states energy cannot be created or destroyed, only transformed.
9. What is the unit of electric current?
a) Volt
b) Ohm
c) Ampere
d) Watt
Answer: c) Ampere
Rationale: Electric current is measured in amperes.
, 10. Which type of load is constant over time?
a) Dynamic load
b) Impact load
c) Static load
d) Cyclic load
Answer: c) Static load
Rationale: Static loads do not change with time.
11. What is shear stress?
a) Normal force per area
b) Tangential force per area
c) Energy per volume
d) Mass per area
Answer: b) Tangential force per area
Rationale: Shear stress acts parallel to the surface.
12. Which instrument measures pressure?
a) Thermometer
b) Manometer
c) Voltmeter
d) Ammeter
Answer: b) Manometer
Rationale: Manometers measure fluid pressure.
13. What is the slope of a stress-strain curve in elastic region?
a) Density
b) Modulus of elasticity
c) Strength
d) Toughness
Answer: b) Modulus of elasticity
Rationale: The slope represents stiffness of the material.
14. Which law applies to electrical circuits at nodes?
a) Ohm’s Law
b) Kirchhoff’s Current Law
c) Faraday’s Law
d) Coulomb’s Law
Answer: b) Kirchhoff’s Current Law
Rationale: It states total current entering equals leaving a node.
ACTUAL EXAM 2026/2027 COMPLETE ACCURATE EXAM
REAL QUESTIONS WITH WELL ELABORATED ANSWERS
AND RATIONALES. (100% CORRECT VERIFIED SOLUTIONS)
1. What is the primary purpose of a factor of safety in engineering design?
a) Increase cost
b) Ensure reliability
c) Reduce weight
d) Simplify calculations
Answer: b) Ensure reliability
Rationale: A factor of safety accounts for uncertainties in material properties, loads, and
conditions to ensure safe performance.
2. Which law states that stress is proportional to strain within the elastic limit?
a) Newton’s Law
b) Hooke’s Law
c) Ohm’s Law
d) Bernoulli’s Principle
Answer: b) Hooke’s Law
Rationale: Hooke’s Law defines the linear relationship between stress and strain in elastic
materials.
3. The unit of power in the SI system is:
a) Joule
b) Watt
c) Newton
d) Pascal
Answer: b) Watt
Rationale: Power is the rate of energy transfer, measured in watts (J/s).
4. What is the derivative of displacement with respect to time?
a) Acceleration
b) Velocity
c) Force
d) Momentum
Answer: b) Velocity
Rationale: Velocity is defined as the rate of change of displacement over time.
, 5. Which material property indicates resistance to deformation?
a) Density
b) Elastic modulus
c) Conductivity
d) Viscosity
Answer: b) Elastic modulus
Rationale: Elastic modulus measures stiffness and resistance to deformation.
6. What is the SI unit of pressure?
a) Watt
b) Pascal
c) Joule
d) Volt
Answer: b) Pascal
Rationale: Pressure is force per unit area, measured in Pascals (N/m²).
7. In fluid mechanics, what does Reynolds number indicate?
a) Pressure loss
b) Flow regime
c) Energy efficiency
d) Temperature gradient
Answer: b) Flow regime
Rationale: Reynolds number determines whether flow is laminar or turbulent.
8. Which law governs conservation of energy?
a) First Law of Thermodynamics
b) Second Law
c) Newton’s Law
d) Kirchhoff’s Law
Answer: a) First Law of Thermodynamics
Rationale: It states energy cannot be created or destroyed, only transformed.
9. What is the unit of electric current?
a) Volt
b) Ohm
c) Ampere
d) Watt
Answer: c) Ampere
Rationale: Electric current is measured in amperes.
, 10. Which type of load is constant over time?
a) Dynamic load
b) Impact load
c) Static load
d) Cyclic load
Answer: c) Static load
Rationale: Static loads do not change with time.
11. What is shear stress?
a) Normal force per area
b) Tangential force per area
c) Energy per volume
d) Mass per area
Answer: b) Tangential force per area
Rationale: Shear stress acts parallel to the surface.
12. Which instrument measures pressure?
a) Thermometer
b) Manometer
c) Voltmeter
d) Ammeter
Answer: b) Manometer
Rationale: Manometers measure fluid pressure.
13. What is the slope of a stress-strain curve in elastic region?
a) Density
b) Modulus of elasticity
c) Strength
d) Toughness
Answer: b) Modulus of elasticity
Rationale: The slope represents stiffness of the material.
14. Which law applies to electrical circuits at nodes?
a) Ohm’s Law
b) Kirchhoff’s Current Law
c) Faraday’s Law
d) Coulomb’s Law
Answer: b) Kirchhoff’s Current Law
Rationale: It states total current entering equals leaving a node.
