Letm(t) = sinc2(t) andmh(t) be its hilbert transform. denote the upper side band modulatedwaveform asxusb(t) =am(t) cos(2000πt)−amh(t) sin(2000πt)

(a) sketch the fourier transforms ofm(t) andmh(t).

(b) sketch the fourier transformx(f) of the complex baseband ofxusb(t) with respectto carrier frequency 1000.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.