ECET 402 Entire Course NEW

DEVRY ECET 402 Week 1 Homework NEW
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ECET 402 HW Week 1
Pages: 20-21: #2,4,6,11,14
CH 3pgs:103 #4,6

DEVRY ECET 402 Week 1 iLab NEW
devry/ecet-402-week-1-ilab-recent
1.From Part A, step 1(b) of lab instructions, change
the temperature from 0 to 30° C and record the
corresponding RTD resistance in Table 1.
2.Graph the temperature-resistance
characteristics of RTD below:
3.Is the graph obtained in step 2 above linear (a
straight line)?
4.Use the graph obtained in step 2 above to
determine the resistance of RTD at 75° F.
5.What is the value of resistor R1 found in Part A,
step 3(f)?

6.Paste your Multisim circuit from Part A, step 4
below:
7.Briefly describe how the circuit above works:
8. From Part A, step 6 of lab instructions, how
would you modify the circuit so that the LED
indicating an air-conditioning system is turned ON
for temperatures of 68° F or higher?

devry/ecet-402--week-2-homework-recent
Chapter 3
Page 104-105 Problems 24, 25, 28, 30, and 38

week 2 lab, complete the following table:
2.Briefly describe if you had any issues with this lab.
3.Briefly describe how you would display the
temperature on the LCD display of a microcontroller
system.
4.From Part B, step 1 of lab instructions, paste your
Multisim circuit design below.
5.From Part B, step 2 of lab instructions, paste your
Multisim circuit design below.
6.Enter IL and VL values you found in the circuit of
Figure 5 of lab instructions below:
7.Enter IL and VL values you found in the circuit of
Figure 6 of lab instructions below:
8.Describe the advantages of the voltage follower circuit
in Figure 6 of the lab instructions:

Homework
1. What is the difference between static,sliding,
and viscous friction?
2. An aluminum casting that weighs 10 lb is resting
on a steel surface.
6.A robot arm must be able to extend 24 in.
horizontally in 2 s while carrying a load of 10 lb.
How much force is required, assuming the arm is
accelerating all the way?

14.A torque of 18 N • m is applied to a rotating
part. The part has a moment of inertia of 0.078 kg •
m2. How much time will it take to rotate the part
180°?
19.An electric heater is rated at 220 Vac at 15 A.
How many Btu/h of heat does it put out?
22.A small gasoline engine can put out 18,000 N •
m/min of mechanical power. The engine is used to
drive an electric generator that is 80% efficient.
Find the output of the generator in watts.
28.What is diametral pitch, and why is it an
important parameter in a gear mesh?
31.For each gear pass shown in Figure 5.49, how
many degrees must the big gear turn for the small
gear to make two complete revolutions?
33.Find the overall gear ratio of the gear train shown in Figure 5.50. If the motor is rotating at 500 rpm, what
is the rotational velocity of the output gear?
46.What are some advantages of transmitting power by belts?

Part A – Voltage to Frequency Converter
1.Change input voltage from 2–10 volts and record
measured frequency in Table 1
2. Use the data obtained in Table 1 to graph
Frequency vs. Voltage in Figure 1.
3.Is the output frequency vs. voltage graph linear?
4.Research and describe some applications for
Voltage to Frequency Converter circuits.
Part B – The Security Alarm System
1.Verify the functionality of your circuit. Take a
digital photo of your alarm system and attach
below.

2.Write a brief report on the functionality of the
alarm system, any issues you encountered, and
any other comments you would like to add.
3.What is the purpose of JK flip-flop in the circuit?
4.What is the purpose of the transistor in the
circuit?

Week 4 Homework
Chapter 11: pp. 483–488, Problems 1, 2, 6, 8, 12,
13, and 19
1.Assume that Figure 11.25(a) is the response
curve of a control system to a step function.
Determine the following parameters: rise time,
overshoot, and settling time.

DEVRY ECET 402 Week 4 iLab Relays and Relay
Logic Controls NEW
devry/ecet-402-week-4-ilab-relays-and-relay-
logic-controls-recent
ECET 402 Week 4 iLab Relays and Relay Logic
Controls NEW

Chapter 12:
1. Draw a relay wiring diagram for a circuit that
implements the simple logic diagram shown in
Figure 12.36. The circuit should be in the style of
Figure 12.1(a).
2. Repeat Exercise 1 except draw the circuit as a
ladder diagram.
3. A small house has three windows and two doors.
Each window and door has a switch attached such
that the contacts close when a door or window
opens. Draw a ladder logic diagram that will turn
on a light if one or more windows are open or if
both doors are open.

4. In a processing plant, jars on a conveyer belt are
cleaned out with a high-pressure air jet just prior
to being filled (Figure 12.37). When a jar
approaches the cleaning station, it activates a
switch (with both NO and NC contacts). The
conveyer belt stops for 10 s while the air jet is on;
then the conveyer belt starts, and the jar moves
along. Draw a ladder logic diagram to control this
process.

DEVRY ECET 402 Week 5 iLab Stepper Motor and
Measuring Speed of a DC Motor NEW
devry/ecet-402-week-5-ilab-stepper-motor-
and-measuring-speed-of-a-dc-motor-recent
Part A
Take a digital photo of your stepper motor circuit
and paste it below:
Once the assembly of stepper motor circuit is
completed and power is applied, observe the
direction of rotation and record it here:

P.405, #1Give an example of an open-loop control
system. Explain why the system is open-loop, and
identify the controller and final control element.
P.405, #2Give an example of a closed-loop control
system. Explain why the system is closed-loop, and
identify the sensor, controller, and final control
element.
P.405, #7Describe the advantages of a 4- to 20-mA
current loop as an input signal compared to a 0-to
5-V input signal.
P.435, #2Complete a report on one type of open
communications network. Make use of the
Internet as well as manufacturer's literature for
compiling the report.

1. Determine the overall transfer function of the
system given below by hand as discussed in pre-
lab. Please show your work and type the equations
if you can
2. Determine the overall transfer function of the
system shown above using MATLAB. Copy the
MATLAB code and the overall transfer function
obtained and paste them below:
3. Are the results in steps 1 and 2 the same?
Comment if they are not.

4.Determine the unit step response of the overall
system using the MATLAB command described in
the pre-lab. Copy the unit step response and paste
it below.
5. Determine the impulse response of the overall
system using the MATLAB command described in
the pre-lab. Copy the impulse response and paste
it below
6. Is the overall system stable?

DEVRY ECET 402 Week 7 iLab Root Locus Plots and
the Stability of a Control System NEW
devry/ecet-402-week-7-ilab-root-locus-plots-
and-the-stability-of-a-control-system-recent
ECET 402 Week 7 iLab Root Locus Plots and the
Stability of a Control System NEW

ECET 402 Entire Course NEW

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