KALAMAZOO VALLEY COMMUNITY COLLEGE



KALAMAZOO VALLEY COMMUNITY COLLEGE

CLASS ASSIGNMENT SCHEDULE

ELT 120, SPRING 2006

INSTRUCTOR: Tom Keena

Office: 5720

Office Hours: As posted and by appointment

Office Phone: 488-4166

Office e-mail: tkeena@kvcc.edu

TEXT REQUIRED: Delmar’s Standard Textbook of Electricity (3rd Edition): Stephen L. Herman

2005 National Electrical Codebook: NFPA

A scientific calculator will be needed

PREREQUISITE: ELT 102 or Instructor’s permission

COURSE ORGANIZATION:

This is a three-credit course, which meets once a week for sixteen weeks, with the final exam during the sixteenth week. This is a basic course in transformers, generators, and both AC and DC motors. This course covers the operating principles and characteristics of all these machines and the proper installation and maintenance procedures required by each.

LEARNING OBJECTIVES:

Upon successful completion of this course, the student will be able to demonstrate, by means of written, oral, or hands on tests, his knowledge of or ability to identify/understand:

1. The parts on an AC motor.

2. The nameplate information on AC motors.

3. NEMA classifications and frame types.

4. Motor insulation classes, temperature rise and ambient temperature.

5. Development of a rotating magnetic field and motor action.

6. Torque, speed, horsepower, slip, efficiency and their relationships.

7. Types of three-phase motors including: induction, synchronous, wound rotor, multi-winding, and dual voltage.

8. The installation of AC motors according to the NEC.

9. Motor connection diagrams.

10. Types of single-phase motors including: split phase, capacitor, repulsion,

universal, and shaded pole.

11. The parts of a DC motor.

12. DC motor nameplate information.

13. Construction and types of DC motors and generators.

14. Speed, torque, speed-torque relationship and speed-load characteristics of DC motors.

15. Speed regulation, constant torque and constant horsepower for DC motors.

16. Transformer types including dry, gas, and oil filled, isolation, potential, current

and power.

17. Transformer construction, maintenance, sizing and rating.

18. Transformer connection diagrams including wye, open and closed delta, single phase, buck and boost.

19. Installation of transformers according to the NEC.

20. Field trips to see these machines. (2 are planned)

COURSE CONDUCT:

The student is expected to attend all class sessions. Homework is due on the assigned date. Late homework WILL NOT be accepted. If you are going to be absent, have someone bring in your homework for you, or you can drop it off in my name at the faculty reception desk-make sure they stamp it with the correct date. All tests are closed text and notes unless specified. Scratch paper and a calculator may be used. There are no make-up tests given, except under extreme unusual circumstances and only at my discretion. In this event, a phone call (to my office that same day, with an explanation) is mandatory. Otherwise, if you miss a test, that score will be a zero. If for any reason class is cancelled on the day of a test, the test will be given at the next class meeting. There are two field trips scheduled for this class. They are subject to change. If for some reason you cannot make the field trip, an alternative assignment will be given. Please be courteous of fellow students with regards to cell phones, beepers, etc.

COURSE GRADING CRITERIA:

Grading will be as follows:

Tests 60% (4) given – (No makeup tests)

Homework 18% No late homework – Due at beginning of Class.

Class work 12% 10 days-1% each & 2% for essay

Quizzes/Essays 10% (Based on field trip content)

Final Grades will be in accordance with the following:

90-100%= 4.0 70-74% = 2.0

85-89% = 3.5 65-69% = 1.5

80-84% = 3.0 60-64% = 1.0

75-79% = 2.5 0-59% = 0.0

Be sure you understand the grading policy. If you have any questions, please ask. If for some reason you are unable to complete this course, please make sure to contact me so we can discuss all of your available options. Failure to do so will obligate me to assign you a grade of “0.0” which will become part of your permanent record, including your GPA.

FINAL DAY FOR WITHDRAWING FROM THIS COURSE: April 21, 2006

CHEATING POLICY: See Attached Academic Dishonesty Policy

ELT 120 ELECTRICAL MACHINES-KEENA

TENTATIVE CLASS ASSIGNMENT SCHEDULE

Week/Date/Class work%

1 Jan 11 Introduction

2 Jan 18 (1%) Three-phase power handouts. Homework #1 DUE (handout)

3 Jan 25 (1%) Three-phase in-class lesson. Hw#2-Read Ch. 32 and do Q’s 1-25

4 Feb 1 (1%) Types AC motors-characteristics, Handout–motors, nameplates, etc

Hw#3-Three-phase handout

5 Feb 8 (1%) AC motors and characteristics. HW #4-Motor Calculation

6 Feb 15 TEST #1 Three-Phase Motors

7 Feb 22 (1%) DC Generators and Motors. Hw#5-Read Unit 29 and do Q’s 1-20

8 Mar 1 (1%) DC Motors. Hw#6-Read Unit 30 and do Q’s 1-18

HW#7 Reliance Part 4 handout

MAR 8 SPRING BREAK

9 Mar 15 (1%) TEST #2 DC Motors (take home test due)

Unit 33 Single-phase Motors and handouts. Hw#8-Read unit 33: Q’s 1-36

10 Mar 22 (1%) Unit 33 Single-phase Motors and handouts.

Hw#9 Lesson 1 single-phase motors & Hw#10 NEC code Q’s

11 Mar 29 TEST #3 Single Phase Motors

12 April 5 (1%) Transformers Hw#11 due & Read Unit 28 (do Q’s 1-10 in class)

13 April 12 Field Trip HECO-write essay (2%), 1pg, typed, double spaced, font 12

Topic: The most interesting aspect(s) of the HECO field trip. Due April 19

14 April 19 (1%) Hw#12-Transformer Drawings & Q’s

.

15 April 26 Field Trip Menasha Paper Mill

16 May 3 TEST #4 Transformers

NOTES:

All homework due the week shown unless specified.

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