Mechanical Engineer Quiz

1. What is the First Law of Thermodynamics mainly about?

A) Entropy generation B) Conservation of mass C) Conservation of energy D) Heat conduction

2. Which cycle is commonly used in steam power plants?

A) Otto Cycle B) Diesel Cycle C) Rankine Cycle D) Carnot Cycle

3. In fluid mechanics, what does Bernoulli's Principle relate to?

A) Heat and temperature B) Force and stress C) Pressure and velocity D) Power and torque

4. Which of these is NOT a type of gear?

A) Spur Gear B) Bevel Gear C) Worm Gear D) Tension Gear

5. What's the unit of viscosity in the SI system?

A) Newton B) Pascal-second C) Watt D) Joule

6. Which metal has the highest thermal conductivity?

A) Iron B) Copper C) Aluminum D) Silver

7. What is the main function of a flywheel in engines?

A) Increase fuel flow B) Store energy and smooth out fluctuations C) Cool the engine D) Act as a clutch

8. Which stress acts parallel to the surface?

A) Compressive B) Tensile C) Torsional D) Shear

9. Which manufacturing process involves removing material?

A) Casting B) Forging C) Machining D) Rolling

10. Which instrument is used to measure very small lengths accurately?

A) Vernier Caliper B) Thermometer C) Pressure Gauge D) Barometer

11. What is Young's Modulus used to measure?

A) Hardness B) Elasticity C) Density D) Friction

12. What does the term Reynolds Number indicate in fluid flow?

A) Pressure loss B) Energy loss C) Type of flow - laminar or turbulent D) Heat transfer rate

13. Which process is used to increase the hardness of steel?

A) Annealing B) Normalizing C) Quenching D) Casting

14. Pascal's Law is mainly used in which of these systems?

A) Refrigeration B) Pneumatics C) Hydraulics D) Combustion

15. In welding, what is the HAZ?

A) Hot Air Zone B) Heat Affected Zone C) Hardness Altered Zone D) High Accuracy Zone

16. Which of these is NOT a type of valve?

A) Gate Valve B) Ball Valve C) Butterfly Valve D) Pressure Valve

17. Which material is commonly used for making aircraft parts due to its strength and light weight?

A) Copper B) Aluminum C) Cast Iron D) Lead

18. What type of heat transfer happens without any medium?

A) Conduction B) Convection C) Radiation D) Evaporation

19. Which of the following is a non-destructive test?

A) Tensile Test B) Charpy Test C) X-ray Test D) Fatigue Test

20. Which of the following is NOT a thermodynamic process?

A) Isothermal B) Isobaric C) Isometric D) Adiabatic

21. Lathe machine is mainly used for?

A) Welding B) Boring C) Machining cylindrical shapes D) Gear making

22. In which unit is power measured?

A) Pascal B) Watt C) Joule D) Newton

23. Which process is used for joining two metal pieces by melting them?

A) Grinding B) Welding C) Drilling D) Riveting

24. What does CFD stand for in mechanical engineering?

A) Constant Force Design B) Computer Fluid Design C) Computational Fluid Dynamics D) Continuous Force Distribution

25. In IC engines, what is the function of a carburetor?

A) Compress air B) Ignite the fuel C) Mix air and fuel in correct ratio D) Cool the engine

Mechanical Engineer Quiz

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