11.4 The noninverting buffer op-amp configuration shownin Fig. Pl 1.4 provides a direct implementation of the feedbackloop of Fig. 11.1. Assuming that the op amp has infiniteinput resistance and zero output resistance, what is /?If A= 1000, what is the closed-loop voltage gain? What is theamount of feedback (in dB)? For Vx = 1 V, find Vo and Vz. If A decreases by 10%, what is the corresponding percentage

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

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)