Important questions Mechanical Engineering 1st Semester (21EME15) 2022

 EME

Module-1 Important questions Mechanical Engineering (21EME15/25)

1.      Briefly explain the emerging trends of mechanical Engineering in the Manufacturing and Energy sectors.

2.      Discuss the role of Mechanical Engineers in the industry and Society.

3.      With the help of a T-h diagram, Explain the various stages in the formation of Steam.

4.      Define the following terms concerning steam: 1. Saturation temperature 2. Latent heat of vaporization 3. Quality of the steam 4. Sensible heat 5. Degree of superheat

5.      Simple numerical on steam.

6.      With a suitable example explain the applications of steam in an industry.

7.      Classify different sources of energy with suitable examples.

8.      What is Solar Energy? Apply the Solar energy conversion technic into electrical energy in a solar cell.

9.      Enumerate the method of extracting energy from Wind with a neat sketch.

10.  With a neat sketch explain the power generation in a thermal power plant.

11.  With a neat sketch explain the power generation in a hydel power plant.

12.  Explain with a neat sketch the power generation in a nuclear power plant.

13.  Explain with a neat sketch the power generation in a tidal power plant.

14.  With a neat sketch explain the working principle of a Pelton Turbine.

15.  Classify hydraulic turbines and with a neat sketch explain the working of the Francis turbine.

16.  Classify Hydraulic turbines and with a neat sketch explain the working of a Kaplan turbine.

17.  Classify Hydraulic pumps and explain the working principle of a centrifugal pump with a neat sketch.

 Module-3 Important questions Mechanical  21EME15

Module-3

1.      Define the I C engine? How they are classified?

2.      Explain how chemical energy is converted to mechanical energy in the case of a 2-stroke petrol engine.

3.      With a neat sketch explain the working of a 4-stroke diesel engine and 4-stroke petrol engine.

4.      Compare 2-stroke and 4-stroke I C engines.

5.      Distinguish between petrol and diesel engine.

6.      List out applications of I C engines.

7.      Draw theoretical Otto cycle and theoretical Diesel cycle P-V diagram.

8.      Explain the basic components of Electric vehicles [E V].

9.      What are the advantages and disadvantages of E V.?

10.  Explain series and parallel hybrid vehicle configurations.

11.  List out the advantages and disadvantages of the hybrid vehicle?

12.  Define the following Coefficient of performance of refrigerator (COP), Refrigerating effect

13.  Refrigeration capacity and Ton of refrigeration (TOR).

14.  Explain with a neat sketch working of the VAR and VCR system.

15.  Compare VAR and VCR.