Question 4. Having made the changes, select the correct statement regarding your observation. a. The signal, s(t), faithfully represents the original message wave m(t) b. Since only the amplitude of the message wave has increased, there is no negative impact to the modulated carrier signal c. The AM modulated carrier shows signal distortion d. None of the above are corre

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]