Wings of fire or (agan pankh) dr. a. p. j. abdul kalam
ppt on flow chart by harshid panchal with help of Sejal ma'm (git.org.in)
Second law of thermodynamic
Kinemetic chains, Pairs, Joints, Four bar Mechanisms (KOM)
Series solution to ordinary differential equations
Hydraulic Machines Fluid coupling, Fluid torque converter