University:
Massachusetts Institute of Technology
Course:
6.685 | Electric Machines
Academic year:

2021
Views:

412

Pages:

4
Author:

Lance Gutierrez

NOTE: Use engineering format for problems 1 through 3 and non-engineering format for problems 4 and 5. This is an individual assignment. 1. Consider the circuit given. Find/answer the following: a. Before working the problem, predict which resistor will have the highest current passing through it. Explain your answer. b. The current leaving the power source. I=69mA c. The power dissipated by the overall circuit. P=0.62W d. The voltage drop across each resistor. ΔV470Ω=9V, ΔV220Ω=9V, ΔV1000Ω=9V e. The current through each resistor. I470Ω=19mA, I220Ω=41mA, I1000Ω=9mA 2. Consider the given circuit. Find a. The current leaving the power source. I=0.38A b. The voltage drop across each resistor. ΔV10Ω=3.8V, ΔV15Ω=1.2V, ΔV20Ω=1.2V, ΔV5Ω=1.2V c. The current through each resistor. I10Ω=0.38A, I15Ω=0.08A, I20Ω=0.06A, I5Ω=0.24A d. The power dissipated by the 20Ω resistor. P20Ω=0.072W e. Check your answers for b. Do they satisfy Kirchhoff’s Voltage Law? If so, explain how. If not, you should check your work to ensure you did it correctly. f. Check your answers for c. Do they satisfy Kirchhoff’s Current Law? If so, explain how. If not, you should check your work to ensure you did it correctly. 3. Redraw the given circuit with clean straight lines, and then find a. Equivalent Resistance Req=45Ω b. Current leaving the power source I=0.11A 4. Build an LED circuit (resistor and LED connected to a pin declared as a digital output) on your breadboard. Write a sketch that can read input from both of your switches and control LEDs as follows: a. If the right switch is pressed, then the LED should blink on for 300ms and off for 100ms 10 times. b. If the left switch is pressed, then the LED should blink on for 1 second and off for ½ second 5 times. Provide a screen shot of your program. In the sketch, be sure to comment on what each line is doing. Have your sketch ready to show your professor at the next class. HINT: Remember that you can use for loops to make LEDs blink repeatedly! Here you could use two for loops, one for loop to make the switch blink 10 times when the first switch is pressed, and another for loop to make the switch blink 5 times when the second switch is pressed. I built my LED circuit. 5. Please try to have your battery packs finished by class 8; you can visit the HelpDesk to complete the soldering or use the soldering equipment during any free time in class. I am finishing my battery pack.

Engineering Problem Solving Homework

Related Documents

Recommended Documents

Description

Related Documents

Want to Download This Document?

Free up your schedule!

Take 5 seconds to unlock