A signal is given by cos 24, where is a baseband signal whose spectrum is given by , || < 0, otherwise (a) Sketch the spectrum of and specify its bandwidth. (b) Find the 3-dM bandwidth of . (c) In order to recover from , a student passes the signal through a low pass filter with cut off frequency of 2Hz. Is this recovery satisfactory

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature