Exam: 006829RR



Exam: 006829RR – Switching, Cords and Cables, Motors, and Related Systems
1. The NEC states that all panelboard circuits and circuit _______ shall be legibly identified as to purpose or use on a circuit directory located on the face or inside of the panel doors.
A. conductors
B. feeders
C. modifications
D. manufacturers
2. Which of the following is not an acceptable application of flexible cords and cables?
A. Connection of moving parts
B. Wiring of light fixtures
C. Under floorboards
D. Appliances, to permit maintenance
3. What is the smallest diameter EMT raceway that can be installed when wiring a three-phase, AC motor, rated at 40 HP and 230V, using THW Cu conductors?
A. 1½ inches
B. 2 inches
C. 1 inch
D. 1¼ inches
4. The NEC states that snap switches shouldn’t be grouped in enclosures unless they can be arranged so that the voltage between adjacent switches doesn’t exceed _______, or unless they’re installed in enclosures equipped with permanently installed barriers between adjacent switches.
A. 400 V
B. 300 V
C. 100 V
D. 200 V
5. A flexible cable contains eight current-carrying conductors. What is the ampacity limit for this cable if the rating for a cable of the same type with no more than three conductors is 20 A?
A. 14 A
B. 20 A
C. 16 A
D. 10 A
6. When determining the number of overcurrent devices in a panelboard, a single 3-pole circuit breaker should be counted as _______ device(s).
A. 3
B. 2
C. 1
D. 6
7. The NEC states that for permanently connected appliances rated over _______ volt-amperes or 1/8 horsepower, the branch-circuit switch or circuit breaker shall be permitted to serve as the disconnecting means where the switch or circuit breaker is within site from the appliance or is capable of being locked in the open position.
A. 500
B. 300
C. 750
D. 400
8. Which of the following appliances must be supplied by an individual branch circuit?
A. Ceiling fan
B. Range hood
C. Garage door opener
D. Central heating unit
9. Assuming that the listed exception does not apply, the NEC states that the minimum number of overload unit(s) required for a three-phase, alternating current motor shall be
A. two.
B. three.
C. one.
D. four.
10. What is the correct fuse rating to provide short-circuit protection for a 100 HP, 200 V, 3Φ, wound rotor motor?
A. 250 A
B. 300 A
C. 200 A
D. 110 A
11. The NEC requires that snap switches rated _______ amperes or less must be marked CO/ALR when connected to aluminum wire.
A. 20
B. 25
C. 35
D. 15
12. According to the NEC, the rating or setting of an overcurrent protection device for a 13.3-ampere, single, non-motor-operated appliance should not exceed _______ amperes.
A. 35
B. 20
C. 45
D. 15
13. Two electricians are discussing panelboards. Electrician A says that the rating of a panelboard for a single-family residence with a 200 A service must be at least 230 A. Electrician B says that the panelboard OCPD for a 200 A service can’t be rated higher that 200 A. Which of the following statements is correct?
A. Neither electrician is correct.
B. Only Electrician B is correct.
C. Both electricians are correct.
D. Only Electrician A is correct.
14. According to the NEC, which of the following appliances is required to be connected to an individual branch circuit?
A. Kitchen waste disposer
B. Trash Compactor
C. Range hood
D. Dishwasher
15. What is the maximum allowable length, in feet, for a motor tap conductor according to the NEC?
A. 40
B. 10
C. 25
D. 75
16. The NEC requires that recessed lighting fixture tap conductors be a minimum of _______ inches long.
A. 13
B. 14
C. 18
D. 12
17. Two electricians are discussing NEC requirements for common appliances. Electrician A says that new, cord-and-plug, single-phase room A/C units must have factory-installed LCDI or AFCI protection. Electrician B says that the cord for a household refrigerator must be visible and readily accessible to be used as a disconnect switch. Which of the following statements is correct?
A. Both electricians are correct.
B. Only Electrician B is correct.
C. Only Electrician A is correct.
D. Neither electrician is correct.
18. What is the full-load current of a 50-horsepower, three-phase, AC motor operating at 230 V?
A. 113 A
B. Per motor nameplate
C. 725 A
D. 130 A
19. What is the maximum ampacity for type SPE-1 flexible cable, 10 AWG copper, where only two conductors are current-carrying?
A. 35 A
B. 30 A
C. 40 A
D. 20 A
20. Two electricians are installing receptacles for portable equipment on the outside of a multifamily dwelling. Electrician A says that any receptacles that are under a porch roof need a weatherproof cover only when a plug isn’t installed. Electrician B says that any receptacles that aren’t under the porch roof need a waterproof cover even when the plug is installed. Which of the following is correct?
A. Neither electrician is correct.
B. Only Electrician A is correct.
C. Only Electrician B is correct.
D. Both electricians are correct.

State the final conclusion in non-technical terms



Q using the same data set and variables for your selected topic, add the following information to your analysis: Age Data Option Checkup:

Mean 61.81666667

Median 61.5

Mode 69

Standard Deviation 8.924337

Range 41

Midrange 55.5

Sample Size 60

2. Perform the hypothesis test. Critical Value method.

• If you selected Option 2:

o Original Claim: The average age of all patients admitted to the hospital with infectious diseases is less than 65 years of age.

o Test the claim using α = 0.05 and assume your data is normally distributed and σ is unknown.

• Based on your selected topic, answer the following:

1. Write the null and alternative hypothesis symbolically and identify which hypothesis is the claim.

2. Is the test two-tailed, left-tailed, or right-tailed? Explain.
3. Which test statistic will you use for your hypothesis test; z-test or t-test? Explain.
4. What is the value of the test-statistic? What is the P-value?
5. What is the critical value?

6. What is your decision; reject the null or do not reject the null?
a. Explain why you made your decision including the results for your p-value and the critical value.
7. State the final conclusion in non-technical terms.

Determine whether the hypothesis test involves a sampling distribution of means that is a



Module 3 Homework Assignment
1. Determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution or neither.  The sample data appear to come from a normally distributed population with σ = 28. Explain.
2.  In a sample of 100 M&M’s, it is found that 8% are brown. Use a 0.05 significance level to test the claim that of the Mars candy company that the percentage of brown M&M’s is equal to 13%.  Identify the null and alternative hypotheses.
3. (Refer to problem 2) Find the test statistic.
4.  (Refer to problem 2) Use the Standard Normal Table to find the p-value, critical value(s) and state the decision about the null hypothesis.
5.  (Refer to problem 2) State the conclusion in non-technical terms.
6. Test the claim that for the adult population of one town, the mean annual salary is given by μ =  30,000. Sample data are summarized as n = 17, = $22,298, and s = $14,200. Use a significance level of α = 0.05. State the null and alternative hypotheses.
7.  (Refer to Question 6) Find the test statistic.
8.  (Refer to Question 6) Find the critical value(s) and state decision about null hypothesis.
9.  (Refer to Question 6) State the conclusion in non-technical terms.
10. Find the critical value or values of χ2 based on the given information.  H1: σ > 26.1, n = 9, α = 0.01

Scholars conclude that what we ordinarily call religion manifests to some degree



Scholars conclude that what we ordinarily call religion manifests to some degree the following eight elements: 1) a belief system; 2) community; 3) central myths; 4) rituals; 5) an ethical system; 6) emotional experiences; 7) material expressions of religion; and 8) sacredness.1. Examine to what extent your religious beliefs fall into this pattern. Do some elements have more weight than others? If you do not have a belief system, interview someone who does and examine their belief system. Provide enough details to support your answer. 2.Then examine one of the “new religions” or alternative paths that are seen in today’s world and apply the same analysis to their beliefs. Do some elements have more weight than others? Are some totally absent? Provide enough details to support your answer. Please limit your analysis to no more than three elements for each section.3.New Religious Movements: Scientology, Falun Gong, Cao Dai, Wicca and Druidism, the Yoruba Tradition (Santería, Voodoo, and Candomblé), Rastafarianism, etc. Feel free to choose among one of these alternatives or another approved by your instructor.This essay should be 3 pages in length (1050 words). [Note the addition of word count to clarify how long the paper should be if formatted properly in APA.]