Date : 5/06/2022

* IC Engine ( Internal Combustion engine)

  • In a spark ignition engine, the fuel is mixed with air and then inducted into the cylinder during the intake process.
  • After the piston compresses the fuel air mixture, the spark ignites it, causing combustion.
  • The expansion of the combustion gases pushes the piston during the power stroke
  • Crucial components needed to make one run, a fuel to burn, oxygen to support combustion and an ignition source to start combustion.

Date : 8/06/2022

Dixit Sir took lecture on Review session on Empathy & new topic on Human body, Photosynthesis, Energy cycle ( Nitrogen cycle)

* Empathy – Design thinking process:-

– 1) Empathize

2) Define

3) Ideate

4) Prototype

5) Test

  • Empathy means to understand and observe the other people sadness & happiness.
  • For example – 1) I understand how you feel. 2) You must feel so hopeless. 3) With direct experience.

* Human Body :-

  • Oxygen – 65%
  • Carbon – 18%
  • Hydrogen – 10%
  • Nitrogen – 3%
  • Total = 96% ( Ca-1.4% , P – 1.1% , K- 0.4% )
  • Remaining – 1.1 is Na, Mg, Zn, Fe, B, S, Mo etc.

* Energy Consumption in World :-

  • The average for men reference ( 77 Kg) 2,300 Kcal & for women – 1,900 Kcal
  • How much energy does the world require? = 5.80 1020j
  • How many times more = 8.7×10 =8700000
  • World population – 7, 953,952,577
  • Global energy consumption – 2000 to 2020
  • Photosynthesis :- 1) Coal = -0.6% yr. , 2) Oil = – 0.5% , 3) Natural gas = +2.4% yr ,
  • Solar Thermal 1) Nuclear = +0.89% yr., 2) Hydro = +1.5% yr. ,Other = +14.1% yr.