Q4/ A baseband communication signal has an energy value equal to 2 watt and zero phase response. Then :answer the following 1-The energy spectral density G(f) of this signal should be equal to:
2-The spectrum of this signal X(f) should be equal to:
3-The signal in time domain x(t) :should be equal to:

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false