•                           Mr. Cunningham’s TEST and QUIZ CORRECTIONS Policy and Procedures:

Quiz and TEST corrections are accepted up to 2 weeks after you get the quiz/test/assessment results.

If you want credit back for any test errors, please do the following:

1. All graded materials from the unit must be turned in, no zeros.

For each missed question perform the following procedure:

1. Explain your thinking. What did you do wrong? Write at least two sentences; no credit if you say you just guessed.
2. Justify the correct answer. If it is a mathematical problem, show all your work.  If it is a non-math problem,
cite the source of the correct answer in detail (page and paragraph of source).
3. Create a new question that could be used in place of this question in the future.
4.  For example:
 Repeat the question (question # isn’t enough) What were you thinking? Justify the correct answer? New Problem. Example: Find the area of the triangle if the base is 4.3 cm and the height is 12 cm I marked 25.8 cm3.  I saw the cm3 and since the problem had a cube I thought I needed something to the 3rd power.  I forgot that area is always a unit squared. Triangle area = ½ x b x h = ½ x 4.3 cm x 12 cm = 25.8 cm x cm = 25.8 cm2. Since it is area, it should be cm2 Find the area of the triangle if the base is 6 cm and the height is 11 cm, Triangle area = ½ x b x h = ½ x 6 cm x 11 cm = 33 cm x cm = 33 cm2 Example: If you make a mistake in your engineering notebook:________ I choose “erase them and write the correction there” because I thought that neatness was very important. I obviously needed to study the PowerPoint more. The correct answer is “cross out the error, correct it and initial it.” This is true because engineering notebooks are a permanent record and by erasing it is no longer permanent. The correct answer in on slide #11 of the presentation Engineering Notebook. Why do you not erase mistakes in an engineering notebook? a.       It’s impossible to erase pen. b.       Then the record of what you did is no longer permanent. Correct answer. c.        You might not have an eraser. d.       It’s just the rule. Do it.

STUDENT EXAMPLE OF GREAT - Test Corrections: 1.2 Electricity Test

For each missed question perform the following procedure:

1. Explain your thinking. What did you do wrong? Write at least two sentences; no credit if you say you just guessed.
2. Justify the correct answer. If it is a mathematical problem, show all your work. If it is a non-math problem,
cite the source of the correct answer in detail (page and paragraph of source).
3. Create a new question that could be used in place of this question in the future.

Question #1: 97.6 mv =__________V

1) I moved the decimal 2 times to the right. I should have moved it 3 times to the left.

2) The correct answer is .0976

3) 89.8 mv= _____V

Questions #2: 4.8 kΩ = __________Ω

1) I moved the decimal 1 to the left. I should have moved it 3 to the right

2)The correct answer is 4800

3)56.9 kΩ = __________Ω

Question #4: 0.0015 A = __________mA

1)I thought the question was telling me to move the decimal 3 to the left but it was saying to move the decimal to the right.

2)The correct answer is 1.5

3)0.000798 A = __________mA

Question #7 What measurement should the multi-meter be set up to read?

1)At the time I didn’t not know that DC for direct current and it usually means the electrons flow in a single direction, so I put AC because out of all the answer options it was the only one that I recognized

2)The correct answer is DC

3) not too sure how to make another question

Question #11 Calculate the total resistance.

1) I saw three numbers and instead of thinking about the question I automatically thought that was supposed to add all the numbers together but that wasn’t the case.

2)The correct answer is 2226 Ω

3) Calculate the current

Question #12 If the voltage on the 413 Ω resistor is 2.23 V and the voltage on the 1.3 kΩ resistor is 7.01 V, what is the voltage on the 0.513 kΩ resistor?

1) when I read the question,i was over thinking it because the question is only asking to find the voltage for .513 I thought it was asking for the overall resistance of the circuit

2)The correct answer 2.76 V

3)  If the voltage on the 413 Ω resistor is 15.4V and the voltage on the 1.3 kΩ resistor is  V, what is the voltage on the 0.513 kΩ resistor?

Question #13 If the values shown are correct, use Ohms Law to calculate the voltage on the 5.4 ohm resistor.

1)I saw 5.4 so I assumed that the answer was also 5.4

2)The correct answer 10.8 V

3) Not sure how to change the question

Question #14 What can you say about the voltage on R1?

1) I thought that it was 18 V times resistor not 18 minus resistor

2)The correct answer =18 V - ( V on 5.4 Ω resistor)

3)not sure what to put as a question

Question #17 If the current in R1 is 1 mA and the current in R2 is 2 mA, what is the current in R3?

1) I thought it would be 3 mA because since the first one is 1 mA and and second one is 2 mA I figured it might be 3 mA

2)The correct answer 4 mA

3)if the current in R2 in 2mA and the current in R3 in 4mA, what is the current in R1

Question #18 The electric winch is powered by a 12 V battery. the winch lifts the weight shown a total of 9.0 meters and draws a total of 25 Amps. the weight is 175 Newtons. It takes a total of 13 seconds. What is the mechanical power output of this machine?

2)The correct answer 121 Watts

3)The electric winch is powered by a 12 V battery. the winch lifts the weight shown a total of 8.0 meters and draws a total of 30 Amps. the weight is 200 Newtons. It takes a total of 20 seconds. What is the mechanical power output of this machine?

Question #19 The electric winch is powered by a 12 V battery. The winch lifts the weight shown a total of 9.0 meters and draws a total of 25 Amps. The weight is 175 Newtons. It takes a total of 13 seconds. What is the electrical power put into the system?

1) I didn’t know multiplying the voltage times the current would give u the electrical power

2)The correct answer 300 Watts

3)The winch is powered by a 12 V battery. The winch lifts the weight at a total of 8.0 meters and draws a total of 30 Amps. The weight is 200 Newtons. It takes a total of 20 seconds. What’s the electrical power put into the system?

Question #21 Two lamps are wired in parallel, if another lamp is added in parallel. What will happen?

1) I said that its resistance will rise because if u add another parallel u might also add a resister, but the current rising makes way more sense.

2)The correct answer the total current will rise

3) Three lamps are wired in parallel, if one is removed what will happen?

Question #23 Biomass would be classified as what type of energy source?

1) I didn’t know that biomass was a renewable energy source

2)The correct answer renewable

3)Solar power would be classified as what type of energy source?

Question #28 Find the current (in Amps) in the circuit if the Voltage is 9V and the Resistance is 250kΩ.

1)I didn’t divide 9 by 250,000 I divide 9 divide by 250

2)The correct answer 0.000036

3) Find the current ( in Amps) in the circuit if the Voltage is 9V and the Resistance is 150kΩ