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Reading a book chapter on the subject Examining sample questions |
Plus and minus temperature coefficient of conductivity; Fixed resistors, stability, tolerances and limitations, construction methods; Independent/variable resistors, thermistors, voltage controlled resistors; Construction of potentiometers and rheostats/regulated resistors; Construction of Wheatstone Bridge; |
Lecture Question-Answer |
| 2 |
Reading a book chapter on the subject Examining sample questions |
Power, work and energy (kinetic and potential); Energy loss in resistors; Power/Energy formula; Calculations involving power, work and energy. Operation and functioning of capacitor; Factors affecting flange capacitance area, distance between flanges, number of flanges, dielectric and dielectric invariant, operating voltage, voltage stress; Capacitor types, structure and function; Capacitor color coding; Capacitance and voltage calculations in series and parallel circuits; Capacitor overload and discharge, time invariants; Testing of capacitors. |
Lecture Question-Answer |
| 3 |
Reading a book chapter on the subject Examining sample questions |
3.10 Magnetism (a) Theory of magnetism; Properties of a magnet; Motion of a magnet suspended in the Earth's magnetic field; Magnetization and demagnetization; Magnetic shielding; Various types of magnetic materials; Structure and principles of operation of electromagnets; "hand" rules determining the magnetic field around a current carrying conductor; |
Lecture Question-Answer |
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Reading a book chapter on the subject Examining sample questions |
Magneto motor force, field strength, magnetic flux density, permeability, hysteresis loop, residual magnet flux density, magnetic resistance to demagnetizing force, saturation point, eddy currents; Precautions for maintenance and storage of magnets. 3.11 Inductance/Inductor Faraday's Law; Induction of voltage in a conductor moving in a magnetic field; Principles of induction; Effects depending on the magnitude of the induced voltage: Magnetic field strength, rate of flux change, number of conductor windings; Mutual induction; The effect of the rate of change of primary current and the effect of mutual induction on induced voltage; Factors affecting mutual induction; Number of windings in the winding, physical size of the winding, winding permeability, position of the windings to each other; Lenz's Law and polarity determination rules; Back/reverse emf, self-induction; Saturation point: Main uses of inductors. |
Lecture Question-Answer |
| 5 |
Reading a book chapter on the subject Examining sample questions |
Magneto motor force, field strength, magnetic flux density, permeability, hysteresis loop, residual magnet flux density, magnetic resistance to demagnetizing force, saturation point, eddy currents; Precautions for maintenance and storage of magnets. 3.11 Inductance/Inductor Faraday's Law; Induction of voltage in a conductor moving in a magnetic field; Principles of induction; Effects depending on the magnitude of the induced voltage: Magnetic field strength, rate of flux change, number of conductor windings; Mutual induction; The effect of the rate of change of primary current and the effect of mutual induction on induced voltage; Factors affecting mutual induction; Number of windings in the winding, physical size of the winding, winding permeability, position of the windings to each other; Lenz's Law and polarity determination rules; Back/reverse emf, self-induction; Saturation point: Main uses of inductors. 3.12 DC Motor/Generator Theory Basic motor and generator theory; Structure and purpose of components in DC generators; Operation of current output and direction of current flow in DC generators and factors affecting them; Operation of output power, torque, speed and direction of rotation of DC motors and factors affecting them; Series wound, parallel wound and compound motors; Starter Generator construction. |
Lecture Question-Answer |
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Reading a book chapter on the subject Examining sample questions |
3.12 DC Motor/Generator Theory Basic motor and generator theory; Structure and purpose of components in DC generators; Operation of current output and current flow direction in DC generators and factors affecting them; Operation of output power, torque, speed and rotation direction of DC motors and factors affecting them; Series wound, parallel wound and compound motors; Starter Generator structure. 3.13 AC Theory Sinusoidal waveform: phase, period, frequency, cycle; Instantaneous, average, square root, peak, peak-to-peak current values and calculation of these values depending on voltage, current and power; Triangle/Square waves; Single/three phase principles. |
Lecture Question-Answer |
| 7 |
Reading a book chapter on the subject Examining sample questions |
3.13 AC Theory Sinusoidal waveform: phase, period, frequency, cycle; Instantaneous, average, square root, peak, peak-to-peak current values and calculation of these values depending on voltage, current and power; Triangular/Square waves; Single/three phase principles. |
Lecture Question-Answer |
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MID-TERM EXAM |
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| 9 |
Reading a book chapter on the subject Examining sample questions |
3.14 Resistive (R), Capacitive (C) and Inductive (L) Circuits Phase relationship of voltage and current in L, C and R circuits, parallel, series and series parallel; Power loss in L, C and R circuits; Impedance, phase angle, power factor and current calculations; Direct power, apparent power and reactive power calculations |
Lecture Question-Answer |
| 10 |
Reading a book chapter on the subject Examining sample questions |
3.14 Resistive (R), Capacitive (C) and Inductive (L) Circuits Phase relationship of voltage and current in L, C and R circuits, parallel, series and series parallel; Power loss in L, C and R circuits; Impedance, phase angle, power factor and current calculations; Direct power, apparent power and reactive power calculations 3. 15 Transformers Structure and operating principles of transformers; Transformer losses and ways to prevent these losses; Behavior of transformers in loaded and unloaded conditions; Power transfer, activity polarity markings; Calculation of line and phase voltage and current; Power calculation in a three-phase system; Primary and secondary currents, voltages, winding ratios, power, efficiency; Auto transformers |
Lecture Question-Answer |
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Reading a book chapter on the subject Examining sample questions |
3.15 Transformers Structure and operating principles of transformers; Transformer losses and ways to prevent these losses; Behavior of transformers in loaded and unloaded conditions; Power transfer, activity polarity markings; Calculation of line and phase voltage and current; Power calculation in a three-phase system; Primary and secondary currents, voltages, winding ratios, power, efficiency; Auto transformers |
Lecture Question-Answer |
| 12 |
Reading a book chapter on the subject Examining sample questions |
3.15 Transformers Structure and operating principles of transformers; Transformer losses and ways to prevent these losses; Behavior of transformers in loaded and unloaded conditions; Power transfer, polarity markings of activity; Calculation of line and phase voltage and current; Power calculation in a three-phase system; Primary and secondary currents, voltages, winding ratios, power, efficiency; Auto transformers 3.16 Filters Operation, application and use of low pass, high pass, band pass and band stop filters |
Lecture Question-Answer |
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Reading a book chapter on the subject Examining sample questions |
3.17 AC Generators Cycle/circuit rotation in magnetic field and generated waveform; Operation and construction of rotary inductor and rotating field type AC generators; Single phase, two phase and three phase alternators; Advantages and uses of three phase star and delta connection; Permanent/Natural Magnet Generators. |
Lecture Question-Answer |
| 14 |
Reading a book chapter on the subject Examining sample questions |
3.18 AC Motors Construction and operating principles of both single-phase and polyphase AC synchronous and induction motors; Speed control and rotation direction methods; Rotating field generation methods: capacitor, inductor, shaded or split pole. |
Lecture Question-Answer |
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Reading a book chapter on the subject Examining sample questions |
General Review |
Lecture Question-Answer |
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FINAL EXAM |
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FINAL EXAM |
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