Twice the rotating frequency
.In slider crank mechanism, secondary forces fluctuate at twice the rotating frequency.
Venturimeter works on the basis of Bernoulli's principle.
The Bernoulli's equation states that For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another.
The Bernoulli's equation is applied to venturimeter, orifice meter and pitot tube.
1 and 2
In thermodynamics, a process in Quasi-static process and Reversible process undergoes a succession of equilibrium states.
2 and 3
Work is path dependent function
Work is area under the curve in a PV diagram
2 and 3
Heat and Work are not completely interchangeable forms of energy
Work can be converted completely into heat