Questions
The member AB is supported at B by a cable and at A
The member AB is supported at B by a cable and at A by a smooth fixed square rod which fits loosely through the square hole of the collar. If F= {20i - 40j - 75k} lb, determine the x, y, and z components of the reaction at A and the tension in cable BC. (Note: possible reactions at Aare Ay, Ax, Mx, My, and Mz).
In: Other
A sequential circuit has two JK flip-flops A and B, two inputs r and y,...
A sequential circuit has two JK flip-flops A and B, two inputs r and y, and one output z. The flip-flop input equations and circuit output equation are
\(\begin{aligned} J_{A} &=A^{\prime} x+B^{\prime} y & K_{A}=B x^{\prime} y^{\prime} \\ J_{B} &=A^{\prime} x y & K_{B}=A^{\prime}+B^{\prime} x \\ z &=A^{\prime} x^{\prime}+B^{\prime} y^{\prime} & \end{aligned}\)
(a) Derive the simplified state equations for A and B.
(b) Tabulate the state table.
(c) Draw the state diagram of the çircuit.
In: Other
The table below lists the average bond energies that you would need to determine reaction enthalpies
Find the displacement thickness, momentum thickness and energy thickness for the velocity distribution in boundary layer given by:
\( \frac{u}{U}=2(\frac{y}{\delta})-(\frac{y}{\delta})^2 \)
In: Other
Consider the following time series data.
Consider the following time series data.
| Week | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Value | 18 | 15 | 16 | 13 | 17 | 16 |
a. Choose the correct time series plot.
What type of pattern exists in the data?
b. Develop a three-week moving average for this time series. Compute MSE and a forecast for week 7. Round your answers to two decimal places.
| Week | Time Series Value | Forecast |
|---|---|---|
| 1 | 18 | |
| 2 | 15 | |
| 3 | 16 | |
| 4 | 13 | |
| 5 | 17 | |
| 6 | 16 |
MSE:
The forecast for week 7:
c. Use α = 0.2 to compute the exponential smoothing values for the time series. Compute MSE and a forecast for week 7. Round your answers to two decimal places.
| Week | Time Series Value | Forecast |
|---|---|---|
| 1 | 18 | |
| 2 | 15 | |
| 3 | 16 | |
| 4 | 13 | |
| 5 | 17 | |
| 6 | 16 |
MSE:
The forecast for week 7:
d. Compare the three-week moving average forecast with the exponential smoothing forecast using a = 0.2. Which appears to provide the better forecast based on MSE?
Explain.
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
e. Use trial and error to find a value of the exponential smoothing coefficient a that results in a smaller MSE than what you calculated for a = 0.2. Find a value of a for the smallest MSE. Round your answer to three decimal places.
α =
In: Other
Radovilsky Manufacturing Company, in Hayward, California, makes flashing lights for toys. The company operates its production...
Radovilsky Manufacturing Company, in Hayward, California, makes flashing lights for toys. The company operates its production facility 300 days per year. It has orders for about 12,100 flashing lights per year and has the capability of producing 95 per day. Setting up the light production costs $51. The cost of each light is $0.95. The holding cost is $0.05 per light per year.
a) What is the optimal size of the production run? _______ units (round your response to the nearest whole number).
b) What is the average holding cost per year? $_______ , round your response to two decimal places
In: Other
The three-station work cell illustrated in Figure S7.7, has a product that must go through one...
The three-station work cell illustrated in Figure S7.7, has a product that must go through one of the two machines at station 1 (they are parallel) before proceeding to station 2.
Station 1 Machine A Capacity: 20 units/hr
Station 1 Machine B Capacity: 20 units/hr
Station 2 Capacity: 5 units/hr
Station 3 Capacity: 12 units/hr
a) what is the bottleneck time of the system?
b) what is the bottleneck station of this work cell?
c) what is the throughput time?
d) if the firm operates 10 hrs per day, 5 days per week, what is the weekly capacity of this work cell?
In: Other
A producer of pottery is considering the addition of a new plant to absorb the backlog of demand that now exists
A producer of pottery is considering the addition of a new plant to absorb the backlog of demand that now exists. The primary location being considered will have fixed costs of $9,200 per month and variable costs of 70 cents per unit produced. Each item is sold to retailers at a price that averages 90 cents.
a. What volume per month is required in order to break even?
b. What profit would be realized on a monthly volume of 61,000 units? 87,000 units?
c. What volume is needed to obtain a profit of $16,000 per month?
d. What volume is needed to provide a revenue of $23,000 per month?
e. Plot the total cost and total revenue lines
In: Other
a. Using KVL, KCL, and Ohm's Law, find v1, v2, v3, i1, i2, andi3. Hint:...
For the circuit below,
a. Using KVL, KCL, and Ohm's Law, find v1, v2, v3, i1, i2, and i3. Hint: solve for the current first by using 1 KCL and 2 KVL equations.
b. Find the power associate with each circuit element (passive sign convention, include sign in the answer) and verify that total power is conserved
In: Other
Consider a class Movie that information about a movie. The class has the following attributes: • ...
Consider a class Movie that information about a movie. The class has the following attributes:
• The movie name
• The MPAA rating (for example, G, PG, PG-13, R)
• The number of people that have rated this movie as a 1 (Terrible)
• The number of people that have rated this movie as a 2 (Bad)
• The number of people that have rated this movie as a 3 (OK)
• The number of people that have rated this movie as a 4 (Good)
• The number of people that have rated this movie as a 5 (Great)
Implement the C ++ class with accessor (getter) and mutator (setter) functions for the movie name and MPAA rating. Write a function addRating that takes an integer as input parameter. The function should verify that the parameter is number between 1 and 5, and if so, increment the number of people rating the movie that match the input parameter. For example, if 3 is the input parameter, then the number of people that rated the movie as a 3 should be incremented by 1. Write another function, getAverage, that returns the average value for all of the movie ratings. Finally, add a constructor that allows the programmer to create the object with a specific name and MPAA rating. The number of people rating the movie should be set to 0 in the constructor. Test the class by writing a main function that creates at least two movie objects, add at least five ratings for each movie, and outputs the movie name, MPAA rating, and average rating for each movie object.
In: Other
Café Michigan's manager, Gary Stark, suspects that demand for mocha latte coffees depends on the price...
Café Michigan's manager, Gary Stark, suspects that demand for mocha latte coffees depends on the price being charged. Based on historical observations, Gary has gathered the following data, which show the numbers of these coffees sold over six different price values:
Price Number Sold
$2.70 765
$3.60 510
$2.00 975
$4.10 245
$3.10 325
$4.05 475
Using these data, how many mocha latte coffees would be forecast to
be sold according to simple linear regression if the price per cup
were $1.80? round to one decimal
In: Other
Problem 11-16 Wally’s Widget Warehouse takes orders from 7 A.M. to 7 P.M. The manager wants to analyze the pro...
Problem 11-16
Wally’s Widget Warehouse takes orders from 7 A.M. to 7 P.M. The
manager wants to analyze the process and has provided the process
flow diagram shown below. There are three steps required to ship a
customer order. The first step is to take the order from a
customer. The second step is to pick the order for the customer,
and then they have to pack the order ready for shipping. Wally
promises that every order placed today gets shipped tomorrow. That
means that the picking and packing operations must finish all
orders before they go home. |
| Wally wants to figure out the following. |
| a. | What is the current maximum daily output of the process assuming that no one works overtime? (i.e., meaning all three operations work a 12-hour shift) |
| Current maximum output | units per day | |
| b. | How long (in hours) will the picking and packing operations have to work to finish all the orders that were taken if we have a day where the order taker works at his maximum capacity? |
| Pick orders | hours |
| Pack orders | hours |
| c. | Givenb, what is the maximum number of orders waiting to be picked? |
| Maximum number of orders | units |
| d. | Givenb, what is the maximum number of orders waiting to be packed? |
| Maximum number of orders | units |
Management is considering doubling the packing capacity (from 60 to 120 orders per hour). Please answer the following based on that change. |
| e. | How long will the picking and packing operations have to work if we have a day where the order taker works at his maximum capacity? |
| Pick orders | hours |
| Pack orders | hours |
| f. | Givene, what is the maximum number of orders waiting to be picked? |
| Maximum number of orders | units |
| g. | Givene, what is the maximum number of orders waiting to be packed? |
| Maximum number of orders | units |
In: Other
Roger Ginde is developing a program in supply chain management certification for managers. Ginde has listed...
Roger Ginde is developing a program in supply chain management certification for managers. Ginde has listed a number of activities that must be completed before a training program of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table:
| Activity | Immediate Predecessor(s) | Time (days) |
|---|---|---|
| A | - | 4 |
| B | - | 6 |
| C | - | 2 |
| D | B | 10 |
| E | A, D | 3 |
| F | C | 5 |
| G | E, F | 10 |
This exercise contains only parts b, c, and d.
b) The critical activities for the leadership training program development project are B-D-E-G
c) The project length for the leadership training program development project = 29 days.
d) Slack time for each of the activities is:
| Activity | Slack Time |
|---|---|
| A | 12 |
| B | 0 |
| C |
In: Other
A 6-pole, 50 Hz, 3-phase induction motor running on full load develops a useful torque of...
A 6-pole, 50 Hz, 3-phase induction motor running on full load develops a useful torque of 160 Nm when the rotor emf makes 120 complete cycles per minute. The windage and friction loss is 1005.30 Watt. It is assumed; the core loss is lumped together with the windage and friction loss. The total stator loss is given to be 800 Watt. Compute:
a) Shaft power output,
b) The copper loss in the rotor winding,
c) The input power to the motor, and
d) The efficiency.
In: Other
1-For the following state table
1-For the following state table
| Present | Next state | Output | ||
|---|---|---|---|---|
| state | 0 | 1 | 0 | 1 |
| a | f | b | 0 | 0 |
| b | d | a | 0 | 0 |
| d | g | a | 1 | 0 |
| f | f | b | 1 | 1 |
| g | g | d | 0 | 1 |
Note: Equivalent states: b=e, a=c, h=d
(a) Draw the corresponding state diagram.
(b) Tabulate the reduced state table.
(c) Draw the state diagram corresponding to the reduced state table.
2- A sequential circuit has two JK flip-flops A and B and one input X. The circuit is described by the following flip-flop input equations:
JA = X'
KA = A
JB = B'
KB = X
(a) Drive the state equations A (t1 and B (t +1) by substituting the input equations for the J and K variables.
(b) Draw the state diagram of the circuit.
In: Other
If the gap between C and the rigid wall at D is initially 0.1 mm
If the gap between C and the rigid wall at D is initially 0.1 mm, determine the support reactions at A and D when the force P = 200 kN is applied. The assembly is made of solid A-36 steel cylinders with E = 200 GPa. Also, what is the normal stress developed in the segment AB and the segment BC?
In: Other