Onsider a message signalm(t) containing frequency components at 100, 200,and 400 Hz. (a) This signal is applied to a USB modulator together with a carrier at 100 kHz. The received signal is identical to the transmitted signal. However, in the demodulator used torecoverm(t), the local oscillator supplies a sinusoidal wave of frequency 100.02 kHz instead of 100kHz. Determine the frequency components of the detector output. (b) Next, consider the output frequency components when LSB is applied.

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.

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

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false