Ultrafast Laser Surface Texturing Technology In Mechanical Engineering Quiz

Questions : 10 | Total Attempts: 505 | Recent Updated: 17-Jun-2023
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In Ultrafast Laser Surface Fabrication Techniques, micro-sockets or grooves are created on the surface of objects in a highly controlled manner through a pulsed laser beam. Such surfaces are subject to dry sliding conditions and oil supplies. It also reduces the wear rate while reducing the coefficient of friction. Surface design techniques can be used to improve the fuel efficiency of internal combustion engines. An internal combustion engine (ICE) is a heat engine where the combustion of fuel occurs in a combustion chamber with an oxidizer (usually air). It is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of high temperature and high-pressure gases produced by combustion applies direct force to some components of the engine. The force is usually applied to the piston, turbine blade, rotor, or nozzle. This force moves the component over a distance, converting chemical energy into useful mechanical energy. Let's know more about Ultrafast Laser Surface Texturing Technology In Mechanical Engineering.

Questions Excerpt


1. Who has developed this technique?

A. International Advanced Centre for Powder Metallurgy & New Materials

B. Amity Centre for Educational Research & Training

C. IIT Madras

D. DRDO

2. What effectively does laser surface micro-texturing technology control?

A. Friction

B. Wear

C. Both of the above

D. None of these

3. Through which technique micro-dimples or grooves are made on the surface of objects?

A. Micro Surface Texture

B. Ultrafast Laser Surface Texturing Technology

C. Laser surface micro-texturing

D. All of the above

4. The use of the surface on the piston rings has reduced the lubricant fuel consumption by how many%?

A. 10%

B. 12%

C. 14%

D. 16%

5. Higher knocking will occur due to which?

A. Petrol is used in diesel engine

B. Spark plug is used in diesel engine

C. Both of the above

D. None of these

6. The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as...

A. Molecule

B. Atom

C. Element

D. All of the above

7. Which of the following fuel has the highest calorific value?

A. Peat

B. Anthratic coal

C. Coke

D. None of these

8. Which of the following has minimum molecule mass?

A. Water

B. Oxygen

C. Nitrogen

D. Hydrogen

9. In which year the built the first internal combustion engine?

A. In 1795

B. In 1797

C. In 1798

D. In 1799

10. Built the first American internal combustion engine by whom?

A. John Barber

B. John Stevens

C. Eugenio Barsanti

D. None of these

 

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