BELT - Electrical Machines Fall 2025
COURSE INFORMATION SHEET
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MIDTERM EXAM (04-12-2025) @ 6pm
FINAL EXAM (06-02-2026) @ 06:00pm
PAPER PATTERN (TENTATIVE)
|
Assessment Tools |
CLO-1(37) |
CLO-2(35) |
CLO-3(28) |
|
Final Exam |
(27%) 10 |
(57.15%) 20 |
(72%) 20 |
Quiz 3 Assignment # 3
TRANSFORMERS: {Class
Lectures available}
Example 3(a): Pg: 9
Example 4(c): Pg: 11
Example 2(a): Pg: 6
DC GENERATORS: {Class
Lectures available}
1.0 WORKING PRINCIPLE
An electric generator is based on the principle that whenever
magnetic flux is cut by a conductor, an e.m.f. is induced which will cause a
current to flow if the conductor circuit is closed. The direction of induced
e.m.f. (and hence current) is given by Fleming’s right-hand rule.
The essential components of a generator are:
(a) a
magnetic field
(b)
conductor or a group of conductors
(c)
motion of conductor w.r.t. magnetic field.
^^^DC
Generator Classification w.r.t Field of Excitation^^^
Example 2(c): Pg: 11
Example 3: Pg:
11
DC MOTORS: {Class Lectures
available}
1.0 D.C. Motor
Principle
Operation of a d.c. motor is based on the
principle that when a current carrying conductor is placed in a magnetic field,
the conductor experiences a mechanical force. The direction of this force is
given by Fleming’s left hand rule and magnitude is given by; F = BIL Newtons. Where B is flux density, I is conductor current and L is
length of pole face
Example
1(a): Pg: 2
Example
3(a): Pg: 3
3-Phase INDUCTION MOTORS:
{Class Lectures available}
1.0 Introduction
1.1 Advantages
1.2 Disadvantages
2.0 CONSTRUCTION
4.2
ROTOR CURRENT FREQUENCY
NO QUESTION FROM
MIDTERM EXAMS WILL BE REPEATED
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