ELEMENT III
review for NTC
問題一覧
1
What is the value of the resistor having the color bands as follows:
black-brown -black- no color ?
1 ohm
2
What is the value of the resistor having the color bands as follows:
green - black -black- no color ?
50 ohms
3
What is the value of the resistor having the color bands as follows:
gray- gray - orange- no color ?
88 kilo-ohms
4
What is the value of the resistor having the color bands as follows:
white - white- black- no color ?
99 ohms
5
What is the value of the resistor having the color bands as follows:
green- green - orange -no color ?
55 kilo-ohms
6
What is the value of the resistor having the color bands as follows:
red-red- brown- no color ?
220 ohms
7
What symbol denotes the positive polarity of a battery ?
plus sign (+)
8
What symbol denotes the negative polarity of a battery ?
minus sign (-)
9
What wire color often connects to a positive polarity of a battery Source ?
red
10
What wire color often connects to a negative polarity of a battery source?
black
11
What component is used to turn a circuit on or off?
switch
12
What is the meaning of A.C. in electricity?
alternating current
13
What is the meaning of D.C. in electricity?
direct current
14
What electrical value can be concluded if one reads 5 Amperes on a component?
current value
15
What is the total inductance of 3 inductors connected in series with the following values: 3mH, 5mH and 22mH?
30 mH
16
What is the total inductance of 2 inductors -valued at 20mH each and are connected in parallel?
10 mH
17
What is the unit of Power ?
watt
18
What is the unit of frequency ?
hertz
19
What is the symbol used to denote Voltage ?
V
20
What is the symbol used to denote Current ?
I
21
What is the unit symbol used to denote Resistance ?
Ω
22
Amateur Radio frequency 430 MHz-440 MHz belongs to what frequency range?
UHF
23
what frequency range does the 7.095 MHz A3J signal belong to?
HF
24
What is another way of writing 1 V?
1000 milli-volt
25
What is another way of writing 470 kilo-ohms?
470,000 ohms
26
What is another way of writing 1 kilowatt?
1000 watts
27
What frequency range does the 144 MHz phase shift keying signal belonging too?
VHF
28
What does the acronym UHF represent in reference to frequency ranges?
Ultra High Frequency
29
What does the acronym VHF represent in reference to frequency ranges?
Very High Frequency
30
What does the acronym HF represent in reference to frequency ranges?
High Frequency
31
What is another way of writing 3000 MHZ?
3 GHz
32
What is the unit symbol used to denote Inductance?
H
33
What is the unit symbol used to denote Power ?
Watt
34
What is the unit symbol used to denote Frequency ?
Hz
35
What component in a schematic diagram is represented by capital letter"L"?
inductor
36
What component in a schematic diagram is represented by capital letter "C"?
capacitor
37
What component in a schematic diagram is represented by capital letter "R"?
Resistor
38
What is the formula to derive Power, given the values of Voltage and Current?
power = current x voltage
39
What is the formula to derive Voltage, given the values of Current and Resistance ?
V = I R
40
Given the values for POWER and CURRENT, what is the formula to determine the Voltage ?
V = P/I
41
What is the formula to determine Resistance if the values of Voltage and Current are provided ?
R = V/I
42
What electrical value can be concluded if one reads 77 henry on a Component?
inductance value
43
If one sees a plus (+) sign on a terminal of a battery, what is the polarity of this terminal ?
positive polarity
44
What is the total power dissipated by a load resistor supplied by 48V source and having a total current of 1A flow through it?
48 Watts
45
What is the voltage across a load dissipating 15W of power and consumes 3A of current?
5V
46
What is the current flowing through a load having a 12V measuremert across it and dissipates 4W of power ?
0.333 A
47
In what component does one commonly find the resistance value in a circuit ?
resistor
48
In what component does one commonly find the inductance value in a circuit?
inductor
49
In what component does one commonly find the capacitance value in a circuit ?
capacitor
50
What are included in the high frequency range?
3 MHz - 30 MHz
51
What are included in the very high frequency range ?
30 MHz - 300 MHz
52
What are included in the ultra high frequency range ?
300 MHz - 3 GHz
53
What type of circuit that has its component junctions connected side by side?
series circuit
54
What type of circuit that has its component junctions at a common point ?
parallel circuit
55
What is the symbol used to denote "micro" in measurements ?
Greek letter “u”
56
What is the symbol used to denote "kilo" in measurements ?
K
57
What is the symbol used to denote "mega" in measurements ?
M
58
What is the symnbol used to denote "milli" in measurements ?
m
59
What is the symbol used to denote "giga" in measurements ?
G
60
What is a good conductor of electricity?
copper
61
What is a good insulator of electricity?
rubber
62
In what manner can a 55 microfarad value capacitor also be written ?
55 uF
63
In what manner can a 168 megaohm value resistor also be written?
168 MΩ
64
In what manner can a 1.2 gigahertz frequency also be written ?
1.2 GHz
65
In what manner can 325 kiloohm resistor also be written ?
325 KΩ
66
In what manner can 888 milliwatt power value also be written ?
888 mW
67
In what manner can a 1000 volt value can also be written ?
1 KV
68
In what manner can a 1 watt power value can also be written?
1000 mW
69
What is a good source of DC Power Supply ?
battery
70
What device or instrument is used to measure voltage in a circuit ?
voltmeter
71
What device or instrument is used to measure current in a circuit ?
ammeter
72
What electric value remains constant in a SERIES circuit ?
current
73
What electric value remains constant in a PARALLEL circuit ?
voltage
74
What is the value of the resistor having the color bands as follows:
violet- violet-blue-no color
77 mega-ohms
75
What is the value of the resistor having the color bands as follows:
brown -red- yellow- no color?
120 kilo-ohms
76
What is the value of the resistor having the color bands as follows:
orange- black red-no color ?
3000 ohms
77
What is the value of the resistor having the color bands as follows:
yellow -violet-violet-no color?
470 Mega-ohms
78
In a condition of series resonance, we can
measure a current flow through that is __?
maximum
79
The best device for storing energy in a magnetic field is:
coil
80
In DC circuits, load is measured in resistance only, while in AC and
radio circuits we can expect a reactive component in the load and the
combination of these two is termed as__?
impedance
81
Coils have an ability to store magnetic energy. It is called ___?
inductance
82
An ideal voltage source should have___?
zero internal resistance
83
Which of the following is not a type of resistor?
tantalum
84
Which frequency band is considered as audio frequency?
30 Hz to 30 kHz
85
While resistance is an opposition of current that results in a dissipation of energy, which of the following is the opposition to Current due to storage of energy?
reactance
86
A resistor dissipates watt when 1 volt DC is applied to it. Instead of the DC voltage, 1 volt RMS at 60hz is then applied on the resistor. It will ___?
make it dissipate the same power
87
The band width of frequency response curve of a resonant circuit is measured using as lower and upper limits the ___?
all of the choices
88
What is the unit of Voltage ?
volt
89
What is the unit of Current ?
ampere
90
What is the unit of Resistance ?
ohm
91
What is the unit of Capacitance ?
farad
92
What is the unit of Inductance ?
Henry
問題一覧
1
What is the value of the resistor having the color bands as follows:
black-brown -black- no color ?
1 ohm
2
What is the value of the resistor having the color bands as follows:
green - black -black- no color ?
50 ohms
3
What is the value of the resistor having the color bands as follows:
gray- gray - orange- no color ?
88 kilo-ohms
4
What is the value of the resistor having the color bands as follows:
white - white- black- no color ?
99 ohms
5
What is the value of the resistor having the color bands as follows:
green- green - orange -no color ?
55 kilo-ohms
6
What is the value of the resistor having the color bands as follows:
red-red- brown- no color ?
220 ohms
7
What symbol denotes the positive polarity of a battery ?
plus sign (+)
8
What symbol denotes the negative polarity of a battery ?
minus sign (-)
9
What wire color often connects to a positive polarity of a battery Source ?
red
10
What wire color often connects to a negative polarity of a battery source?
black
11
What component is used to turn a circuit on or off?
switch
12
What is the meaning of A.C. in electricity?
alternating current
13
What is the meaning of D.C. in electricity?
direct current
14
What electrical value can be concluded if one reads 5 Amperes on a component?
current value
15
What is the total inductance of 3 inductors connected in series with the following values: 3mH, 5mH and 22mH?
30 mH
16
What is the total inductance of 2 inductors -valued at 20mH each and are connected in parallel?
10 mH
17
What is the unit of Power ?
watt
18
What is the unit of frequency ?
hertz
19
What is the symbol used to denote Voltage ?
V
20
What is the symbol used to denote Current ?
I
21
What is the unit symbol used to denote Resistance ?
Ω
22
Amateur Radio frequency 430 MHz-440 MHz belongs to what frequency range?
UHF
23
what frequency range does the 7.095 MHz A3J signal belong to?
HF
24
What is another way of writing 1 V?
1000 milli-volt
25
What is another way of writing 470 kilo-ohms?
470,000 ohms
26
What is another way of writing 1 kilowatt?
1000 watts
27
What frequency range does the 144 MHz phase shift keying signal belonging too?
VHF
28
What does the acronym UHF represent in reference to frequency ranges?
Ultra High Frequency
29
What does the acronym VHF represent in reference to frequency ranges?
Very High Frequency
30
What does the acronym HF represent in reference to frequency ranges?
High Frequency
31
What is another way of writing 3000 MHZ?
3 GHz
32
What is the unit symbol used to denote Inductance?
H
33
What is the unit symbol used to denote Power ?
Watt
34
What is the unit symbol used to denote Frequency ?
Hz
35
What component in a schematic diagram is represented by capital letter"L"?
inductor
36
What component in a schematic diagram is represented by capital letter "C"?
capacitor
37
What component in a schematic diagram is represented by capital letter "R"?
Resistor
38
What is the formula to derive Power, given the values of Voltage and Current?
power = current x voltage
39
What is the formula to derive Voltage, given the values of Current and Resistance ?
V = I R
40
Given the values for POWER and CURRENT, what is the formula to determine the Voltage ?
V = P/I
41
What is the formula to determine Resistance if the values of Voltage and Current are provided ?
R = V/I
42
What electrical value can be concluded if one reads 77 henry on a Component?
inductance value
43
If one sees a plus (+) sign on a terminal of a battery, what is the polarity of this terminal ?
positive polarity
44
What is the total power dissipated by a load resistor supplied by 48V source and having a total current of 1A flow through it?
48 Watts
45
What is the voltage across a load dissipating 15W of power and consumes 3A of current?
5V
46
What is the current flowing through a load having a 12V measuremert across it and dissipates 4W of power ?
0.333 A
47
In what component does one commonly find the resistance value in a circuit ?
resistor
48
In what component does one commonly find the inductance value in a circuit?
inductor
49
In what component does one commonly find the capacitance value in a circuit ?
capacitor
50
What are included in the high frequency range?
3 MHz - 30 MHz
51
What are included in the very high frequency range ?
30 MHz - 300 MHz
52
What are included in the ultra high frequency range ?
300 MHz - 3 GHz
53
What type of circuit that has its component junctions connected side by side?
series circuit
54
What type of circuit that has its component junctions at a common point ?
parallel circuit
55
What is the symbol used to denote "micro" in measurements ?
Greek letter “u”
56
What is the symbol used to denote "kilo" in measurements ?
K
57
What is the symbol used to denote "mega" in measurements ?
M
58
What is the symnbol used to denote "milli" in measurements ?
m
59
What is the symbol used to denote "giga" in measurements ?
G
60
What is a good conductor of electricity?
copper
61
What is a good insulator of electricity?
rubber
62
In what manner can a 55 microfarad value capacitor also be written ?
55 uF
63
In what manner can a 168 megaohm value resistor also be written?
168 MΩ
64
In what manner can a 1.2 gigahertz frequency also be written ?
1.2 GHz
65
In what manner can 325 kiloohm resistor also be written ?
325 KΩ
66
In what manner can 888 milliwatt power value also be written ?
888 mW
67
In what manner can a 1000 volt value can also be written ?
1 KV
68
In what manner can a 1 watt power value can also be written?
1000 mW
69
What is a good source of DC Power Supply ?
battery
70
What device or instrument is used to measure voltage in a circuit ?
voltmeter
71
What device or instrument is used to measure current in a circuit ?
ammeter
72
What electric value remains constant in a SERIES circuit ?
current
73
What electric value remains constant in a PARALLEL circuit ?
voltage
74
What is the value of the resistor having the color bands as follows:
violet- violet-blue-no color
77 mega-ohms
75
What is the value of the resistor having the color bands as follows:
brown -red- yellow- no color?
120 kilo-ohms
76
What is the value of the resistor having the color bands as follows:
orange- black red-no color ?
3000 ohms
77
What is the value of the resistor having the color bands as follows:
yellow -violet-violet-no color?
470 Mega-ohms
78
In a condition of series resonance, we can
measure a current flow through that is __?
maximum
79
The best device for storing energy in a magnetic field is:
coil
80
In DC circuits, load is measured in resistance only, while in AC and
radio circuits we can expect a reactive component in the load and the
combination of these two is termed as__?
impedance
81
Coils have an ability to store magnetic energy. It is called ___?
inductance
82
An ideal voltage source should have___?
zero internal resistance
83
Which of the following is not a type of resistor?
tantalum
84
Which frequency band is considered as audio frequency?
30 Hz to 30 kHz
85
While resistance is an opposition of current that results in a dissipation of energy, which of the following is the opposition to Current due to storage of energy?
reactance
86
A resistor dissipates watt when 1 volt DC is applied to it. Instead of the DC voltage, 1 volt RMS at 60hz is then applied on the resistor. It will ___?
make it dissipate the same power
87
The band width of frequency response curve of a resonant circuit is measured using as lower and upper limits the ___?
all of the choices
88
What is the unit of Voltage ?
volt
89
What is the unit of Current ?
ampere
90
What is the unit of Resistance ?
ohm
91
What is the unit of Capacitance ?
farad
92
What is the unit of Inductance ?
Henry