Passband to baseband conversion: Consider the following passband signal,

ypt= V2sine(2t)cos(200mt).

where sinc(t)=\frac{sin(\pi t)}{\pi t} is the sinc function.

(1) What is the carrier frequency of y_{p}(t) ?
(2) What is the absolute passband bandwidth of y_{p}(t) ?
(3) Find the complex baseband equivalent y(t) of y_{p}(t) .
(4) What is the absolute bandwidth of y(t)?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented