Complete Lesson with Eight LEDs with 74HC595. This code uses a shift register to use a single data pin to light up 8 LEDs. The code uses the command "bitSet" to set the light pattern. What is the value of the variable leds when the value of currentLED is 2? Hint: You can use Serial. begin(9600) in the setup and Serial. println(leds) in the loop to examine this value.

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]