FE Mechanical Exam Newest Updated
150 Questions And Correct Answers
From Actual Past Papers Exams (Graded
A+) Plus Rationales 2025|2026 Q&A |
Instant Download Pdf
1. What is the SI unit of force
A. Joule
B. Watt
C. Newton
D. Pascal
Answer: C. Newton
Force is defined by Newton’s second law and measured in
newtons (N).
2. Which law states that energy cannot be created or destroyed
A. Zeroth law
B. First law
C. Second law
D. Third law
Answer: B. First law
The first law of thermodynamics expresses conservation of
energy.
3. What is the unit of pressure
A. N/m
, B. N·m
C. N/m²
D. kg/m
Answer: C. N/m²
Pressure is force per unit area, measured in pascals (Pa).
4. Which property is independent of mass
A. Volume
B. Energy
C. Density
D. Weight
Answer: C. Density
Density is an intensive property and does not depend on system
size.
5. What is the acceleration due to gravity on Earth
A. 8.91 m/s²
B. 9.81 m/s²
C. 10.81 m/s²
D. 7.81 m/s²
Answer: B. 9.81 m/s²
Standard gravitational acceleration is approximately 9.81 m/s².
6. What is the unit of work
A. Watt
B. Joule
C. Pascal
D. Newton
Answer: B. Joule
Work equals force times distance and is measured in joules.
,7. Which device measures pressure
A. Thermometer
B. Barometer
C. Hygrometer
D. Ammeter
Answer: B. Barometer
Barometers measure atmospheric pressure.
8. Which cycle is used in steam power plants
A. Otto cycle
B. Brayton cycle
C. Rankine cycle
D. Carnot cycle
Answer: C. Rankine cycle
The Rankine cycle is the standard for steam power generation.
9. What is the unit of power
A. Joule
B. Watt
C. Pascal
D. Newton
Answer: B. Watt
Power is the rate of doing work, measured in watts.
10. Which material is most ductile
A. Glass
B. Steel
C. Rubber
D. Ceramic
, Answer: B. Steel
Steel can undergo significant plastic deformation before fracture.
11. What is the main component of air
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Argon
Answer: B. Nitrogen
Air is about 78% nitrogen.
12. Which law relates pressure and volume at constant
temperature
A. Boyle’s law
B. Charles’s law
C. Dalton’s law
D. Avogadro’s law
Answer: A. Boyle’s law
Pressure is inversely proportional to volume at constant
temperature.
13. What is the unit of temperature in SI
A. Celsius
B. Fahrenheit
C. Kelvin
D. Rankine
Answer: C. Kelvin
Kelvin is the base SI unit for temperature.
14. Which machine converts heat to work
A. Refrigerator
150 Questions And Correct Answers
From Actual Past Papers Exams (Graded
A+) Plus Rationales 2025|2026 Q&A |
Instant Download Pdf
1. What is the SI unit of force
A. Joule
B. Watt
C. Newton
D. Pascal
Answer: C. Newton
Force is defined by Newton’s second law and measured in
newtons (N).
2. Which law states that energy cannot be created or destroyed
A. Zeroth law
B. First law
C. Second law
D. Third law
Answer: B. First law
The first law of thermodynamics expresses conservation of
energy.
3. What is the unit of pressure
A. N/m
, B. N·m
C. N/m²
D. kg/m
Answer: C. N/m²
Pressure is force per unit area, measured in pascals (Pa).
4. Which property is independent of mass
A. Volume
B. Energy
C. Density
D. Weight
Answer: C. Density
Density is an intensive property and does not depend on system
size.
5. What is the acceleration due to gravity on Earth
A. 8.91 m/s²
B. 9.81 m/s²
C. 10.81 m/s²
D. 7.81 m/s²
Answer: B. 9.81 m/s²
Standard gravitational acceleration is approximately 9.81 m/s².
6. What is the unit of work
A. Watt
B. Joule
C. Pascal
D. Newton
Answer: B. Joule
Work equals force times distance and is measured in joules.
,7. Which device measures pressure
A. Thermometer
B. Barometer
C. Hygrometer
D. Ammeter
Answer: B. Barometer
Barometers measure atmospheric pressure.
8. Which cycle is used in steam power plants
A. Otto cycle
B. Brayton cycle
C. Rankine cycle
D. Carnot cycle
Answer: C. Rankine cycle
The Rankine cycle is the standard for steam power generation.
9. What is the unit of power
A. Joule
B. Watt
C. Pascal
D. Newton
Answer: B. Watt
Power is the rate of doing work, measured in watts.
10. Which material is most ductile
A. Glass
B. Steel
C. Rubber
D. Ceramic
, Answer: B. Steel
Steel can undergo significant plastic deformation before fracture.
11. What is the main component of air
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Argon
Answer: B. Nitrogen
Air is about 78% nitrogen.
12. Which law relates pressure and volume at constant
temperature
A. Boyle’s law
B. Charles’s law
C. Dalton’s law
D. Avogadro’s law
Answer: A. Boyle’s law
Pressure is inversely proportional to volume at constant
temperature.
13. What is the unit of temperature in SI
A. Celsius
B. Fahrenheit
C. Kelvin
D. Rankine
Answer: C. Kelvin
Kelvin is the base SI unit for temperature.
14. Which machine converts heat to work
A. Refrigerator
