The transfer characteristics of a noninverting buffer in the ecl family are described by the following equations:
v0 = {0, vi < _0.85 v
2.6 [1 -1 /{1 + exp(vi - 1)/vt)}], 0.85v < _ vi < _1.2v
2.6v, vi > _ 1.2v
1. calculate the logic leveles and noise margins (vol, vol(max), voh, voh(min), vil, vih, nml, nmh). use vt = 26mv.
note: since gain is positive in the transition regions for noninverting circuits, use slope = 1 at logic transitions.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79