G 1. Modulation: Follow the procedure used on problems 5.8, 5.9 (Pg 443-444 in text) for the input signal m(t) = e'()u(t) in a DSB-SC modulation system with coherent detection. a. Find and plot the frequency spectra of m(t), c(t) and s(t).b. What is the minimum value of w0 that will ensure that |M(j(w-wc))| < 0.001 at w=0?c. What is the average power of the signal centered at +wc? Use Parseval’s theorem.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

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.

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.