Consider circuit below utilizing MOSFETs with VT = 2 V, (W/L)*kn’ = 1 mA/V2 , λ = 0.01 V-1 , CGS = 1 pF and CGD = 0.2 pF. VDD = VSS = 5 V, I0 = 0.5 mA, RS = RD = RL = 10 kΩ, CS = 1 µF, C2 is infinite, i. e. can be replaced with short circuit for all frequencies of interest. 1. Find the mid-band voltage gain; 2. Estimate the low and high 3dB cutoff frequencies fL and fH; 3. Sketch the magnitude frequency response Bode plot and mark it with the values found. 4. Replace RL with CL = 1 nF and repeat 1, 2 and 3.

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.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges