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ĐẠI HỌC BÁCH KHOA HÀ NỘITRƯỜNG ĐIỆN - ĐIỆN TỬ
TRUNG TÂM ĐÀO TẠO THỰC HÀNH ĐIỆN – ĐIỆN TỬ
BÁO CÁO KẾT QUẢ THÍ NGHIỆM
Trang 2Hà Nội, 2022
M C L CỤC LỤCỤC LỤC
BÀI 1: DC1-UNIT1 TRAINER FAMILIARIZATION 15
1.1 Unit Fundamentals 15
1.2 Exercise 1: Instrument Familiarization 15
1.2.1 Instrument Familiarization: Discussion 15
1.2.2 Instrument Familiarization: Procedure 15
1.2.3 Review Questions 16
1.3 Exercise 2: FACET® Base Unit Familiarization 17
1.3.1 FACET® Base Unit Familiarization: Discussion 17
1.3.2 FACET® Base Unit Familiarization: Procedure 18
1.3.3 Review Questions 19
1.4 Exercise 3: DC Board Familiarization 20
1.4.1 DC Board Familiarization: Discussion 20
1.4.2 DC Board Familiarization: Procedure 21
2.2 Exercise 1: Basic Safety Rules 24
2.2.1 Basic Safety Rules: Discussion 24
2.2.2 Basic Safety Rules: Procedure 25
2.2.3 Review Questions 26
2.3 Exercise 2: Electrical Safety Rules 27
2.3.1 Electrical Safety Rules: Discussion 27
2.3.2 Electrical Safety Rules: Procedure 28
2.3.3 Review Questions 29
2.4 Unit Test 30
BÀI 3: DC1-UNIT3 ELECTRONIC QUANTITIES 31
3.1 Unit Fundamentals 31
3.2 Exercise 1: Circuit Voltages 31
3.2.1 Circuit Voltages: Discussion 31
3.2.2 Circuit Voltages: Procedure 32
3.2.3 Review Questions 33
3.3 Exercise 2: Circuit Current 34
3.3.1 Circuit Current: Discussion 34
3.3.2 Circuit Current: Procedure 35
3.3.3 Review Questions 35
Trang 33.4 Exercise 3: Circuit Resistance 37
3.4.1 Circuit Resistance: Discussion 37
3.4.2 Circuit Resistance: Procedure 37
4.2 Exercise 1: Series and Parallel Battery Circuits 40
4.2.1 Series and Parallel Battery Circuits: Discussion 40
4.2.2 Series and Parallel Battery Circuits: Procedure 41
4.2.3 Review Questions 41
4.3 Exercise 2: Series-Opposing DC Sources 42
4.3.1 Series-Opposing DC Sources: Discussion 42
4.3.2 Series-Opposing DC Sources: Procedure 43
4.3.3 Review Questions 44
4.4 Unit Test 45
BÀI 5: DC1-UNIT5 SWITCHES AND SWITCHING CONCEPTS 46
5.1 Unit Fundamentals 46
5.2 Exercise 1: Identify Types of Switches 46
5.2.1 Identify Types of Switches: Discussion 46
5.2.2 Identify Types of Switches: Procedure 47
5.2.4 Review Questions 47
5.3 Exercise 2: Switching Concepts 49
5.3.1 Switching Concepts: Discussion 49
5.3.2 Switching Concepts: Procedure 49
5.3.3 Review Questions 50
5.4 Unit Test 51
BÀI 6: DC1-UNIT6 OHM’S LAW 52
6.1 Unit Fundamentals 52
6.2 Exercise 1: Ohm’s Law – Circuit Resistance 52
6.2.1 Ohm’s Law – Circuit Resistance: Discussion 52
6.2.2 Ohm’s Law – Circuit Resistance: Procedure 53
6.2.4 Review Questions 53
6.3 Exercise 2: Ohm’s Law – Circuit Current 54
6.3.1 Ohm’s Law – Circuit Current: Discussion 54
6.3.2 Ohm’s Law – Circuit Current: Procedure 55
6.3.3 Review Questions 56
6.4 Exercise 3: Ohm’s Law – Circuit Voltage 57
6.4.1 Ohm’s Law – Circuit Voltage: Discussion 57
Trang 46.4.2 Ohm’s Law – Circuit Voltage: Procedure 58
6.4.3 Review Questions 59
6.5 Unit Test 60
BÀI 7: DC1- UNIT7 SERIES RESISTIVE CIRCUITS 61
7.1 Unit Fundamentals 61
7.2 Exercise 1: Resistance in a Series Resistive Circuit 61
7.2.1 Resistance in a Series Resistive Circuit: Discussion 61
7.2.2 Resistance in a Series Resistive Circuit: Procedure 62
7.2.3 Review Questions 62
7.3 Exercise 2: Current in a Series Resistive Circuit 63
7.3.1 Current in a Series Resistive Circuit: Discussion 63
7.3.2 Current in a Series Resistive Circuit: Procedure 64
7.3.3 Review Questions 65
7.4 Exercise 3: Voltage in a Series Resistive Circuit 66
7.4.1 Voltage in a Series Resistive Circuit: Discussion 66
7.4.2 Voltage in a Series Resistive Circuit: Procedure 67
7.4.3 Review Questions 68
7.5 Unit Test 69
BÀI 8: DC1- UNIT8 PARALLEL RESISTIVE CIRCUITS 70
8.1 Unit Fundamentals 70
8.2 Exercise 1: Resistance in a Parallel Resistive Circuit 70
8.2.1 Resistance in a Parallel Resistive Circuit: Discussion 70
8.2.2 Resistance in a Parallel Resistive Circuit: Procedure 71
8.2.3 Review Questions 71
8.3 Exercise 2: Voltage/Current in a Parallel Resistive Circuit 72
8.3.1 Voltage/Current in a Parallel Resistive Circuit: Discussion 72
8.3.2 Voltage/Current in a Parallel Resistive Circuit: Procedure 73
8.3.3 Review Questions 74
8.4 Unit Test 75
BÀI 9: DC1- UNIT9 SERIES/PARALLEL RESISTIVE CIRCUITS 76
9.1 Unit Fundamentals 76
9.2 Exercise 1: Resistance in a Series/Parallel Circuit 76
9.2.1 Resistance in a Series/Parallel Circuit: Discussion 76
9.2.2 Resistance in a Series/Parallel Circuit: Procedure 77
9.2.3 Review Questions 77
9.3 Exercise 2: Voltage in a Series/Parallel Circuit 78
9.3.1 Voltage in a Series/Parallel Circuit: Discussion 78
9.3.2 Voltage in a Series/Parallel Circuit: Procedure 79
9.3.3 Review Questions 79
9.4 Exercise 3: Current in a Series/Parallel Circuit 80
9.4.1 Current in a Series/Parallel Circuit: Discussion 80
9.4.2 Current in a Series/Parallel Circuit: Procedure 81
Trang 59.4.3 Review Questions 82
9.5 Unit Test 83
BÀI 10: DC1- UNIT10 POWER IN DC CIRCUITS 84
10.1 Unit Fundamentals 84
10.2 Exercise 1: Power in a Series Resistive Circuit 84
10.2.1 Power in a Series Resistive Circuit: Discussion 84
10.2.2 Power in a Series Resistive Circuit: Procedure 85
10.2.3 Review Questions 85
10.3 Exercise 2: Power in a Parallel Resistive Circuit 86
10.3.1 Power in a Parallel Resistive Circuit: Discussion 86
10.3.2 Power in a Parallel Resistive Circuit: Procedure 87
10.3.3 Review Questions 88
10.4 Exercise 3: Power in a Series/Parallel Circuit 89
10.4.1 Power in a Series/Parallel Circuit: Discussion 89
10.4.2 Power in a Series/Parallel Circuit: Procedure 89
10.4.3 Review Questions 90
10.5 Unit Test 91
BÀI 11: DC1- UNIT11 POTENTIOMETERS AND RHEOSTATS 92
11.1 Unit Fundamentals 92
11.2 Exercise 1: The Rheostat 92
11.2.1 The Rheostat: Discussion 92
11.2.2 The Rheostat: Procedure 93
11.2.3 Review Questions 93
11.3 Exercise 2: The Potentiometer 94
11.3.1 The Potentiometer: Discussion 94
11.3.2 The Potentiometer: Procedure 95
11.3.3 Review Questions 96
11.4 Unit Test 97
BÀI 12: DC1- UNIT12 VOLTAGE AND CURRENT DIVIDER CIRCUITS 98
12.1 Unit Fundamentals 98
12.2 Exercise 1: Voltage Dividers 98
12.2.1 Voltage Dividers: Discussion 98
12.2.2 Voltage Dividers: Procedure 99
12.2.3 Review Questions 99
12.3 Exercise 2: Current Dividers 100
12.3.1 Current Dividers: Discussion 100
12.3.2 Current Dividers: Procedure 101
12.3.3 Review Questions 102
12.4 Exercise 3: Loading Voltage/Current Dividers 103
12.4.1 Loading Voltage/Current Dividers: Discussion 103
12.4.2 Loading Voltage/Current Dividers: Procedure 104
12.4.3 Review Questions 105
Trang 612.5 Unit Test 106
BÀI 13: DC1- UNIT13 DIRECT CURRENT METERS 107
13.1 Unit Fundamentals 107
13.2 Exercise 1: The DC Ammeter 107
13.2.1 The DC Ammeter: Discussion 107
13.2.2 The DC Ammeter: Procedure 108
13.2.3 Review Questions 108
13.3 Exercise 2: The DC Ohmmeter 109
13.3.1 The DC Ohmmeter: Discussion 109
13.3.2 The DC Ohmmeter: Procedure 110
13.3.3 Review Questions 111
13.4 Exercise 3: The DC Voltmeter 112
13.4.1 The DC Voltmeter: Discussion 112
13.4.2 The DC Voltmeter: Procedure 113
13.4.3 Review Questions 114
13.5 Unit Test 115
BÀI 14: DC2- UNIT1 DC NETWORK THEOREMS 116
14.1 Unit Fundamentals 116
14.2 Exercise 1: Component Location/Identification 116
14.2.1 Component Location/Identification: Discussion 116
14.2.2 Component Location/Identification: Procedure 116
14.2.3 Review Questions 116
14.3 Exercise 2: Circuit Board Operation 117
14.3.1 Circuit Board Operation: Discussion 117
14.3.2 Circuit Board Operation: Procedure 117
14.3.3 Review Questions 117
14.4 Unit Test 118
BÀI 15: DC2- UNIT2 KIRCHHOFF’S CURRENT LAW 119
15.1 Unit Fundamentals 119
15.2 Exercise 1: Current in a Branch Circuit 119
15.2.1 Current in a Branch Circuit: Discussion 119
15.2.2 Current in a Branch Circuit: Procedure 119
15.2.3 Review Questions 119
15.3 Exercise 2: Node Currents in a Branch Circuit 120
15.3.1 Node Currents in a Branch Circuit: Discussion 120
15.3.2 Node Currents in a Branch Circuit: Procedure 120
Trang 716.2.1 3-Element Series Voltages: Discussion 122
16.2.2 3-Element Series Voltages: Procedure 122
16.2.3 Review Questions 122
16.3 Exercise 2: Algebraic Sum of Series Voltages 122
16.3.1 Algebraic Sum of Series Voltages: Discussion 122
16.3.2 Algebraic Sum of Series Voltages: Procedure 122
16.3.3 Review Questions 122
16.4 Unit Test 122
BÀI 17: DC2- UNIT4 KIRCHHOFF’S LOOP EQUATIONS 123
17.1 Unit Fundamentals 123
17.2 Exercise 1: Loop Equations 123
17.2.1 Loop Equations: Discussion 123
17.2.2 Loop Equations: Procedure 123
17.2.3 Review Questions 123
17.3 Exercise 2: Node Equations 123
17.3.1 Node Equations: Discussion 123
17.3.2 Node Equations: Procedure 123
18.2 Exercise 1: Kirchhoff’s Voltage Law/2 Sources 124
18.2.1 Kirchhoff’s Voltage Law/2 Sources: Discussion 124
18.2.2 Kirchhoff’s Voltage Law/2 Sources: Procedure 124
18.2.3 Review Questions 124
18.3 Exercise 2: Kirchhoff’s Current Law/2 Sources 124
18.3.1 Kirchhoff’s Current Law/2 Sources: Discussion 124
18.3.2 Kirchhoff’s Current Law/2 Sources: Procedure 124
18.3.3 Review Questions 124
18.4 Exercise 3: Mesh Solution with 2 Sources 124
18.4.1 Mesh Solution with 2 Sources: Discussion 124
18.4.2 Mesh Solution with 2 Sources: Procedure 124
Trang 819.2.2 Superposition Theorem: Procedure 125
19.2.3 Review Questions 125
19.3 Exercise 2: Millman’s Theorem 125
19.3.1 Millman’s Theorem: Discussion 125
19.3.2 Millman’s Theorem: Procedure 125
19.3.3 Review Questions 125
19.4 Unit Test 125
BÀI 20: DC2- UNIT7 THEVENIN CIRCUITS 126
20.1 Unit Fundamentals 126
20.2 Exercise 1: Thevenizing a Single Source Network 126
20.2.1 Thevenizing a Single Source Network: Discussion 126
20.2.2 Thevenizing a Single Source Network: Procedure 126
20.2.3 Review Questions 126
20.3 Exercise 2: Thevenizing a Dual Source Network 126
20.3.1 Thevenizing a Dual Source Network: Discussion 126
20.3.2 Thevenizing a Dual Source Network: Procedure 126
21.2 Exercise 1: Bridge Circuit Resistance 127
21.2.1 Bridge Circuit Resistance: Discussion 127
21.2.2 Bridge Circuit Resistance: Procedure 127
21.2.3 Review Questions 127
21.3 Exercise 2: Thevenizing Bridge Circuit Voltage 127
21.3.1 Thevenizing Bridge Circuit Voltage: Discussion 127
21.3.2 Thevenizing Bridge Circuit Voltage: Procedure 127
22.2 Exercise 1: Thevenin to Norton Conversion 128
22.2.1 Thevenin to Norton Conversion: Discussion 128
22.2.2 Thevenin to Norton Conversion: Procedure 128
22.2.3 Review Questions 128
22.3 Exercise 2: Norton to Thevenin Conversion 128
22.3.1 Norton to Thevenin Conversion: Discussion 128
22.3.2 Norton to Thevenin Conversion: Procedure 128
22.3.3 Review Questions 128
Trang 922.4 Unit Test 128
BÀI 23: DC2- UNIT10 DELTA AND WYE NETWORKS 129
23.1 Unit Fundamentals 129
23.2 Exercise 1: Tee/Wye and Pi/Delta Networks 129
23.2.1 Tee/Wye and Pi/Delta Networks: Discussion 129
23.2.2 Tee/Wye and Pi/Delta Networks: Procedure 129
23.2.3 Review Questions 129
23.3 Exercise 2: Delta and Wye Transformations 129
23.3.1 Delta and Wye Transformations: Discussion 129
23.3.2 Delta and Wye Transformations: Procedure 129
24.2 Exercise 1: AC Waveform Generator Familiarization 130
24.2.1 AC Waveform Generator Familiarization: Discussion 130
24.2.2 AC Waveform Generator Familiarization: Procedure 130
24.2.3 Review Questions 130
24.3 Exercise 2: Generator Impedance 130
24.3.1 Generator Impedance: Discussion 130
24.3.2 Generator Impedance: Procedure 130
24.3.3 Review Questions 130
24.4 Unit Test 130
BÀI 25: AC1- UNIT2 AC MEASUREMENTS 131
25.1 Unit Fundamentals 131
25.2 Exercise 1: AC Amplitude Measurement 131
25.2.1 AC Amplitude Measurement: Discussion 131
25.2.2 AC Amplitude Measurement: Procedure 131
25.2.3 Review Questions 131
25.3 Exercise 2: Measuring with an Oscilloscope 131
25.3.1 Measuring with an Oscilloscope: Discussion 131
25.3.2 Measuring with an Oscilloscope: Procedure 131
25.3.3 Review Questions 131
25.4 Exercise 3: Measuring and Setting Frequency 131
25.4.1 Measuring and Setting Frequency: Discussion 131
25.4.2 Measuring and Setting Frequency: Procedure 131
25.4.3 Review Questions 131
25.5 Exercise 4: Phase Angle 131
25.5.1 Phase Angle: Discussion 131
25.5.2 Phase Angle: Procedure 131
25.5.3 Review Questions 131
Trang 1026.3 Exercise 2: Inductors in Series and in Parallel 132
26.3.1 Inductors in Series and in Parallel: Discussion 132
26.3.2 Inductors in Series and in Parallel: Procedure 132
26.3.3 Review Questions 132
26.4 Unit Test 132
BÀI 27: AC1- UNIT4 INDUCTIVE REACTANCE 133
27.1 Unit Fundamentals 133
27.2 Exercise 1: Inductive Reactance 133
27.2.1 Inductive Reactance: Discussion 133
27.2.2 Inductive Reactance: Procedure 133
27.2.3 Review Questions 133
27.3 Exercise 2: Series RL Circuits 133
27.3.1 Series RL Circuits: Discussion 133
27.3.2 Series RL Circuits: Procedure 133
27.3.3 Review Questions 133
27.4 Exercise 3: Parallel RL Circuits 133
27.4.1 Parallel RL Circuits: Discussion 133
27.4.2 Parallel RL Circuits: Procedure 133
28.2 Exercise 1: Transformer Windings 134
28.2.1 Transformer Windings: Discussion 134
28.2.2 Transformer Windings: Procedure 134
28.2.3 Review Questions 134
28.3 Exercise 2: Mutual Inductance 134
28.3.1 Mutual Inductance: Discussion 134
28.3.2 Mutual Inductance: Procedure 134
28.3.3 Review Questions 134
28.4 Exercise 3: Transformer Turns and Voltage Ratios 134
28.4.1 Transformer Turns and Voltage Ratios: Discussion 134
28.4.2 Transformer Turns and Voltage Ratios: Procedure 134
Trang 1128.4.3 Review Questions 134
28.5 Exercise 4: Transformer Secondary Loading 134
28.5.1 Transformer Secondary Loading: Discussion 134
28.5.2 Transformer Secondary Loading: Procedure 134
29.3 Exercise 2: Capacitors in Series and in Parallel 135
29.3.1 Capacitors in Series and in Parallel: Discussion 135
29.3.2 Capacitors in Series and in Parallel: Procedure 135
29.3.3 Review Questions 135
29.4 Unit Test 135
BÀI 30: AC1- UNIT7 CAPACITIVE REACTANCE 136
30.1 Unit Fundamentals 136
30.2 Exercise 1: Capacitive Reactance 136
30.2.1 Capacitive Reactance: Discussion 136
30.2.2 Capacitive Reactance: Procedure 136
30.2.3 Review Questions 136
30.3 Exercise 2: Series RC Circuits 136
30.3.1 Series RC Circuits: Discussion 136
30.3.2 Series RC Circuits: Procedure 136
30.3.3 Review Questions 136
30.4 Exercise 3: Parallel RC Circuits 136
30.4.1 Parallel RC Circuits: Discussion 136
30.4.2 Parallel RC Circuits: Procedure 136
31.2 Exercise 1: RC Time Constants 137
31.2.1 RC Time Constants: Discussion 137
Trang 1231.2.2 RC Time Constants: Procedure 137
31.2.3 Review Questions 137
31.3 Exercise 2: RC and RL Wave Shapes 137
31.3.1 RC and RL Wave Shapes: Discussion 137
31.3.2 RC and RL Wave Shapes: Procedure 137
32.2 Exercise 1: Series RLC Circuits 138
32.2.1 Series RLC Circuits: Discussion 138
32.2.2 Series RLC Circuits: Procedure 138
32.2.3 Review Questions 138
32.3 Exercise 2: Parallel RLC Circuits 138
32.3.1 Parallel RLC Circuits: Discussion 138
32.3.2 Parallel RLC Circuits: Procedure 138
32.3.3 Review Questions 138
32.4 Unit Test 138
BÀI 33: AC2- UNIT2 SERIES RESONANCE 139
33.1 Unit Fundamentals 139
33.2 Exercise 1: Series Resonant Circuits 139
33.2.1 Series Resonant Circuits: Discussion 139
33.2.2 Series Resonant Circuits: Procedure 139
33.2.3 Review Questions 139
33.3 Exercise 2: Q and Bandwidth of a Series RLC Circuit 139
33.3.1 Q and Bandwidth of a Series RLC Circuit: Discussion 139
33.3.2 Q and Bandwidth of a Series RLC Circuit: Procedure 139
34.2 Exercise 1: Parallel Resonant Circuits 140
34.2.1 Parallel Resonant Circuits: Discussion 140
34.2.2 Parallel Resonant Circuits: Procedure 140
34.2.3 Review Questions 140
Trang 1334.3 Exercise 2: Q and Bandwidth 140
34.3.1 Q and Bandwidth: Discussion 140
34.3.2 Q and Bandwidth: Procedure 140
35.2 Exercise 1: Power Division 141
35.2.1 Power Division: Discussion 141
35.2.2 Power Division: Procedure 141
35.2.3 Review Questions 141
35.3 Exercise 2: Power Factor 141
35.3.1 Power Factor: Discussion 141
35.3.2 Power Factor: Procedure 141
35.3.3 Review Questions 141
35.4 Unit Test 141
BÀI 36: AC2- UNIT5 LOW- AND HIGH-PASS FILTERS 142
36.1 Unit Fundamentals 142
36.2 Exercise 1: Low-Pass Filters 142
36.2.1 Low-Pass Filters: Discussion 142
36.2.2 Low-Pass Filters: Procedure 142
36.2.3 Review Questions 142
36.3 Exercise 2: High-Pass Filters 142
36.3.1 High-Pass Filters: Discussion 142
36.3.2 High-Pass Filters: Procedure 142
37.2 Exercise 1: BandPass Filters 143
37.2.1 BandPass Filters: Discussion 143
37.2.2 BandPass Filters: Procedure 143
37.2.3 Review Questions 143
37.3 Exercise 2: BandStop Filters 143
37.3.1 BandStop Filters: Discussion 143
37.3.2 BandStop Filters: Procedure 143
Trang 15GI I THI UỚI THIỆUỆU
Tài liệu này ghi nhận các kết quả thí nghiệm của sinh viên dựa trên quá trình làm việc thực tế với bo mạch và các thiết bị thí nghiệm
Trang 16BÀI 1: DC1-UNIT1 Trainer Familiarization ned or closed, provided you apply sufficient force.
1.2 Exercise 1: Instrument Familiarization1.2.1 Instrument Familiarization: Discussion
1 Make sure of the following: DC Fundamentals circuit board is inserted into the base unit Base unit’s AC power cord is plugged in and the power switch is on Both LEDs, located above the control knobs of the negative and positive variable supplies, should be on.
2.
1 Turn on your multimeter Select the dc function If your meter does not have an autorange, use a range of 20V full scale or greater.
3.
1 Locate the SERIES CIRCUIT block Connect the red and black leads of your multimeter to the power source: red to the long line on the power source symbol and
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Trang 17black to the bottom short line 4.
1 Your meter should read about 15 Vdc 5.
1 Based on your meter indication, what is the polarity of your power supply voltage? For an analog meter, base your answer on the connections For a digital meter, base your answer on whether or not a sign is displayed
1 If you have a digital multimeter, reverse the multimeter test leads connected to your power supply Observe the multimeter reading and polarity indication NOTE: If you have an analog multimeter, reverse the meter test leads at the power source and also at the meter terminals Power Source – black to the long line on the power source symbol and red to the bottom short line Meter terminals – Red to the minus and black to the positive.
7.
1 Is the numerical value of your voltage reading on the multimeter affected by the test lead placement?
1 Is the polarity indication of your meter affected by the test lead placement? NOTE: The analog meter does not show an obvious polarity change because you reverse the test leads at the meter terminals Without this change, the pointer would have “pegged” against the meter stop in a reverse direction This action indicates incorrect polarity in an
1 Should you be concerned with the exact polarity of a voltage reading before you connect your multimeter into the circuit?
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Trang 18ce loose components in the circuit.
3 When both LEDs on the base unit are on, it indicates that the:
Trang 19e unit is connected to one of the computer serial ports.
j AC power cord is plugged in and the power switch is on.
4 A dc power supply can be: positive or negative supply as selected by the variable control.
5 The multimeter used with the FACET® program must be able to measure log, digital, and autorange.
1.3 Exercise 2: FACET® Base Unit Familiarization1.3.1 FACET® Base Unit Familiarization: Discussion
Trang 20overvoltage and/or short circuit condition on a circuit board.
1 Proper electrical connections between the base unit and a circuit board require that the ZIF connector be her open or closed.
1.3.2 FACET® Base Unit Familiarization: Procedure
1.
1 Locate the OHM’S LAW circuit block on the DC FUNDAMENTALS circuit board Do not use a two-post connector to complete the circuit.
2.
1 Select the dc volts function on your multimeter, and connect test leads to the meter to measure voltage NOTE: Place the black test lead to the meter common terminal and place the red test lead to the meter volts (or Vdc) input terminal.
3.
1 Connect your multimeter across the variable power source Place the red test lead at the top and the black lead at the bottom NOTE: If your test leads have alligator
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Trang 21connectors, insert a terminal post into the OHM’S LAW circuit block connectors and attach your alligator leads to the posts.
4.
1 Which variable power supply control(s) do you use to initially adjust the OHM’S LAW circuit block voltage?
1 Use the positive COARSE and FINE controls to adjust the circuit voltage to 10.0 Vdc Note how the FINE control allows a precise voltage adjustment.
6.
1 Set the FINE control to its approximate midpoint Adjust the COARSE control for a voltage reading of about 5 Vdc Use the FINE control to set a precise circuit voltage of 5.00 Vdc (on an analog meter, ensure that your reading is about 5 Vdc).
7.
1 Which procedure allows you to set a circuit voltage precisely?
a Fir st set the FINE control to the approximate voltage Then use the COARSE control to determine the precise circuit voltage.
b Fir st set the COARSE control to the approximate voltage Then use the FINE control to determine the precise circuit voltage.
Trang 22s pos itive power source cannot be changed.
2 The variable power source on the OHM’S LAW circuit block of the DC FUNDAMENTALS circuit board is controlled by the the resistor components R1 and R2.
3 To change the value of the positive power source in the OHM’S LAW circuit block itive source is variable only to 6.0 Vdc.
4 A circuit board is inserted into the base unit when the
Trang 235 The variable power sources in the OHM’S LAW and BATTERIES circuit blocks read approximately 0V and cannot be adjusted You find that the cause is the ative supply controls are in the CCW position.
1.4 Exercise 3: DC Board Familiarization1.4.1 DC Board Familiarization: Discussion
1.
1 Locate the SWITCHES circuit block on the DC FUNDAMENTALS circuit A two-post connector inserted at the S1 test points NEAR/NONLINEAR VARIABLE RESISTOR circuit block
1.4.2 DC Board Familiarization: Procedure
Trang 24 1 Connect the circuit shown Vary the positive variable power supply controls (on the Base Unit) fully CW, then CCW The two-post connector
1 Monitor your voltmeter as you vary the positive variable supply controls (on the base unit) LED brightness varies from the yellow LED to the green LED as the supply control is varied Remove the two-post connector and repeat step 4.
5.
1 Based on your circuit observations, what is the relationship between the two-post connector, the circuit, and the meter?
1 Remove the volmeter leads from the circuit Set your multimeter to read current Use a current range of 200 milliamperes, or 200 mA (full scale)
7.
1 Connect your ammeter as shown Monitor your ammeter as you vary the positive supply controls NOTE: LEDs brightness should vary and the magnitude and polarity of the current reading changes If not, check your meter setup Ask your instructor for help if you are having problems.
8.
1 Your circuit does not use a two-post connector, yet the LED brightness and meter readings indicate a complete circuit Why?
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Trang 25e ammeter takes the place of a two-post connector and breaks the circuit asure circuit current.
3 The VOLTMETER/AMMETER/OHMMETER circuit block is used to
Trang 26mm exp lore how a meter measures electronic quantities.
nn me asure electronic quantities with a digital meter.
4 When you measure circuit current, the cuit current flows through the multimeter.
5 In the FACET® program, current measurements will be mostly in what range?
1 The FACET® base unit provides for protection against a overvoltage and power connection.
b overvoltage, overcurrent, and reverse-power connection c overcurrent and reverse-power connection.
d overcurrent and power connection.
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Trang 272 The parameters of circuit blocks can be altered by a inserting a fault via the base unit.
b adjusting the variable power source.
c inserting a circuit modification via the base unit.
d inserting loose components into circuits at designated test points.
3 The DC FUNDAMENTALS circuit board is properly connected to the base unit when the
a ZIF connector knob is fully CCW b ZIF connector knob is fully CW.
c ±15 Vdc power source is connected to the base unit d power supply LEDs are illuminated.
4 The multimeter dc voltage function is selected by the a range switch.
b automatic voltage selection circuit.
c VOLTMETER circuit block on the DC FUNDAMENTALS circuit board d person using the multimeter.
5 The variable power source in the OHM’S LAW circuit block on the DC FUNDAMENTALS circuit board is adjusted by the
a positive supply control on the base unit b negative supply control on the base unit c –15 Vdc control on the power supply d +15 Vdc control on the power supply.
6 On the DC FUNDAMENTALS circuit board, test points separated by dashed lines are a used to measure voltage.
b for inserting loose components.
c used to energize the associated circuit d for measuring the resistance of the circuit.
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Trang 287 When measuring circuit current, the ammeter is connected a across the component.
b to read a portion of the current.
c so all circuit current flows through the ammeter d parallel to the circuit to read all the circuit current.
8 The arrow through a battery symbol indicates a the direction of current flow.
b the positive terminal c the negative terminal d a variable source output.
9 The symbol shown here represents a
Trang 29BÀI 2: DC1-UNIT2 Safety
2.1 Unit Fundamentals
2.2 Exercise 1: Basic Safety Rules2.2.1 Basic Safety Rules: Discussion2.2.2 Basic Safety Rules: Procedure aring safety glasses.
2 When you follow safety rules, you will vent injury or accidents.
3 When you need to use a power tool you should
a bor row one from a fellow student.
Choose Answer:
Choose Answer:
Trang 30the tool when the instructor is not present.
4 A student has cut his hand during the experiment The student should ort the injury and get medical attention.
5 Safety rules are most effective y when you are working with electrical power equipment.
2.3 Exercise 2: Electrical Safety Rules2.3.1 Electrical Safety Rules: Discussion2.3.2 Electrical Safety Rules: Procedure
Trang 31of the above are correct.
3 You should never touch live wires with your bare hands because you lower the circuit resistance.
4 To be sure that power is removed from a circuit, you should
Trang 32uuu re move the circuit from the equipment.
5 Using PPE and insulated tools are important safety measures because they
1 One cause of workplace accidents is a proper use of tools.
b clean work areas.
c becoming distracted while working d wearing safety glasses.
2 When you follow safety rules, you will a be able to work independently b finish a job quickly.
c eliminate all workplace hazards d prevent injury or accidents.
3 When you need to use a power tool you should a borrow one from a fellow student.
b get the instructor’s approval first c use any tool that is not being used.
d use the tool when the instructor is not present.
Trang 334 A student has cut his hand during the experiment The student should a continue working on the experiment.
b cover the cut and continue working c leave the room to get medical attention d report the injury and get medical attention.
5 Safety rules are most effective
a if you use them every time you work with equipment b only when you notice some type of hazard is present c when you work independently.
d only when you are working with electrical power equipment.
6 When a person comes into contact with an energized circuit, he or she may receive a an electrical short.
b an electrical shock c a burning sensation d a loss of conductivity.
7 You should always remove power cords from the socket by the plug to prevent a the wires from fraying.
b the plug from cracking c an electrical shock.
d All of the above are correct.
8 You should never touch live wires with your bare hands because you a may break the wires.
b may damage the circuit.
c could receive an electrical shock d can lower the circuit resistance.
Trang 349 To be sure that power is removed from a circuit, you should a turn the power switch to the off position.
b check the circuit with a meter.
c have a friend check that the power switch is in the off position d remove the circuit from the equipment.
10 Using PPE and insulated tools are important safety measures because they a remove all risk of electric shock.
b increase the risk of electric shock.
c stop electricity from flowing through your body d provide a barrier between you and live circuits.
Choose Answer:
Choose Answer:
Trang 35BÀI 3: DC1-UNIT3 Electronic Quantities
3.2 Exercise 1: Circuit Voltages3.2.1 Circuit Voltages: Discussion ike charges repel each other.
3.2.2 Circuit Voltages: Procedure
1.
1 Locate the SERIES CIRCUIT circuit block, and connect the circuit shown 2.
1 Refer to your SERIES CIRCUIT circuit block How should you connect your voltmeter to read the source voltage and indicate its correct polarity?
a Co nnect the common side (-) of your meter to the negative terminal of the voltage source and the positive side (+) to the positive terminal of the voltage source.
b Co nnect the common side (-) of your meter to the positive terminal of the voltage source and the positive side (+) to the negative terminal of the voltage source.
Choose Answer:
Choose Answer:
Trang 36nnect both meter terminals to the negative terminal of the voltage source.
3.
1 Connect your voltage meter across the voltage source of your circuit (SERIES CIRCUIT circuit block) Based on your observation, your meter indicates
1 Reverse the meter connections (black lead to the positive terminal of the voltage source) Based on your observation, your meter reads
Trang 37zzz me asured with an ammeter.
aaaa me asured with an ohmmeter.
2 Potential difference is measured with a(n)
Trang 38mbination of positive and negative charges.
3.3 Exercise 2: Circuit Current3.3.1 Circuit Current: Discussion
1 Adjust the positive variable supply controls (on the base unit) for a reading of about 0V The positive variable supply has FINE and COARSE adjustments The controls allow you to set exact voltage values between 0V and +10V.
3.
1 Remove the voltmeter from your circuit Select dc milliamps and a low value mA full scale range on your multimeter Connect the ammeter as shown in the circuit Observe proper polarity for your meter connection.
Trang 39 1 Adjust the positive supply controls until the ammeter reads 1.0 Does this reading indicate that circuit current is 1A or 1 mA?
1 Monitor the current in your circuit as you adjust the positive supply voltage controls from minimum to maximum.