ELEMENT III – CLASS C
“FUNDAMENTALS OF ELECTRONIC AND ELECTRICITY”
1.The unit of voltage is?
a. Volt (V)
b. Ampere (A)
c. Ohms (R)
d. Watt (W)
2. The units of Current is?
a. Volt (V)
b. Ampere (A)
c. Ohm (R)
d. Watt (W)
3. The units of Resistance is?
a. Volt (V)
b. Ampere (A)
c. Ohm (R)
d. Watt (W)
4. The units of Power is?
a. Volt (V)
b. Ampere (A)
c. Ohm (R)
d. Watt (W)
5. The symbols used to denote units of Voltage is?
a. V (E)
b. I (A)
c. Ω (Ohms)
d. W
6. The symbols used to denote units of Current is?
a. V (E)
b. I (A)
c. Ω (Ohms)
d. W
7. The symbols used to denote units of Resistance is?
a. V (E)
b. I (A)
c. Ω (Ohms)
d. W
8. The symbols used to denote units of Power is?
a. V (E)
b. I (A)
c. Ω (Ohms)
d. W
9. The units of Inductance is?
a. Henry
b. Farad
c. Hertz
d. Ohms (Ω)
10. The units of Capacitance is?
a. Henry
b. Farad
c. Hertz
d. Ohms (Ω)
11. The units of Frequency is?
a. Henry
b. Farad
c. Hertz
d. Ohms (Ω)
12. The units of Reactance is?
a. Henry
b. Farad
c. Hertz
d. Ohms (Ω)
13. The symbols used to denote Inductance is?
a. L
b. C
c. Hz
d. X
14. The symbols used to denote Capacitance is?
a. L
b. C
c. Hz
d. X
15. The symbols used to denote Frequency is?
a. L
b. C
c. Hz
d. X
16. The symbols used to denote Reactance is?
a. L
b. C
c. Hz
d. X
17. In a schematic diagram the capital letters “V” is?
a. Voltage
b. Current
c. Reactance
d. Power
18. In a schematic diagram the capital letter “A” is?
a. Voltage
b. Current
c. Resistance
d. Power
19. In a schematic diagram the capital letter “R” is?
a. Voltage
b. Current
c. Resistance
d. Power
20. In a schematic diagram the capital letters “W” is?
a. Voltage
b. Current
c. Resistance
d. Power
21. In a schematic diagram the letters “L” represent?
a. Inductance
b. Capacitance
c. Frequency
d. Reactance
22. In a schematic diagram the letters “C” represent?
a. Inductance
b. Capacitance
c. Frequency
d. Reactance
23. In schematic diagram the letters “f” represent?
a. Inductance
b. Capacitance
c. Frequency
d. Reactance
24. In a schematic diagram the letters “X” represent?
a. Inductance
b. Capacitance
c. Frequency
d. Reactance
25. Audion frequency range is from
a. 20 Hz to 200 MHz
b. 20 Hz to 20 KHz
c. 200 Hz to 4 KHz
d. 300 Hz to 30 KHz
26.The opposition of a conductor to the flow of current is
a. Inductance
b. Resistance
c. Capacitance
d. Conductance
27. The longer the copper wire
a. the lower the resistance
b. same resistance
c. higher resistance
d. zero resistance
28. What is the total voltage of a circuit having a 0.5A current flowing through a 70 ohm resistor?
a. 0.5V
b. 75V
c. 25V
d. 35V
29. The speed of light is approximately meters per second.
a. 250,000,000 m/sec
b. 300,000,000 m/sec
c. 330,000,000 m/sec
d. 350,000,000 m/sec
30. What is the approximate length for a 1/2-wave dipole antenna cut for 3.550 MHz?
a. 42 feet
b. 84 feet
c. 132 feet
d. 263 feet
31. How many hertz are there in a kilohertz?
a. 10,000
b. 1,000
c. 100
d. 10
32. Giga (G) is?
a. one billion(1000000000)
b. one million(100000)
c. one thousand(1000)
d. one hundredth(0.01)
33. Mega (M) is?
a. one billion(10000000000)
b. one million(1000000)
c. one thousand(1000)
d. one hundredth(0.01)
34. Kilo (K) is?
a. one billion(1000000000)
b. one million(1000000)
c. one thousand(1000)
d. one hundredth(0.01)
35. Centi (C) is?
a. one billion(1000000000)
b. one million(1000000)
c. one thousand(1000)
d. one hundredth(0.01)
36. mili (m) is?
a. one thousandth(0.001)
b. one millionth(0.000001)
c. one billionth(0.000000001)
d. one trillionth(0.000000000001)
37. micro (µ) is?
a. one thousandth(0.001)
b. one millionth(0.000001)
c. one billionth(0.000000001)
d. one trillionth(0.000000000001)
38. nano (n) is?
a. one thousandth(0.001)
b. one millionth(0.000001)
c. one billionth(0.0000000001)
d. one trillionth(0.0000000000001)
39. pico (p) is?
a. one thousandth(0.001)
b. one millionth(0.000001)
c. one billionth(0.000000001)
d. one trillionth(0.0000000000001)
40. Microfarad (µF) is equivalent to?
a. 0.000001 Farad
b. (0.0000000000001) of Farad.
c. (0.001) of a Henry
d. (0.00000) of a Henry
41. Pico farad (pF) i equivalent to?
a. 0.000001 Farad
b. (0.00000000000) of Farad.
c. (0.001) of a Henry
d. (0.000001) of a Henry
42. millihenry (mh or mH) is equivalent to?
a. 0.000001 Farad
b.(0.000000000001) of Farad.
c. (0.001) of a Henry
d. (0.0000001) of a Henry
43. microhenry (µH) is equivalent to?
a. 0.000001 Farad
b. (0.0000000000001) of Farad
c. (0.001) of a Henry
d. (0.000001) of a Henry
44. What type of circuit that has its components junctions connected at a common point?
a. Common bridge
b. Common circuit
c. Common connection
d. Common wiring
45. 55 microfarad capacitor be also written?
a. 55F
b. 55nF
c. 55uF
d. 55pF
46. 168 megohm value resistor can also be written as
a. 168 MW
b. 168 k
c. 168 MΩ
d. 168 mW
47. 1.2 gigahertz frequency also be written?
a. 1.2 GHz
b. 1.026MGHz
c. 1.131MHZ
d. 1.456MHZ
48. Three 1.5 volt DC batteries connected in series, the total voltage is
a. 3.0 volts
b. 4.5 volts
c. 1.5 volts
d. n2.75 volts
49. What is good source of DC supply?
a. Water
b. Rubber
c. Battery
d. Glass
50. What device or instrument is used to measure voltage in a circuit?
a. Spectrum Analyser
b. ODTR
c. Voltmeter
d. Thermometer
51. What device or instrument is used to measure current in a circuit?
a. ODTR
b. Ammeter
c. Ohmeter
d. Spectrum Analyser
52.What device or instrument is used to measure resistance in a circuit?
a. Ohmeter
b. Voltmeter
c. Thermometer
d. Ammeter
53.How much a voltmeter be connected in order to measure the voltage of a component in a circuit?
a. Series to the component
b. Parallel to the component
c. Mesh to the component
d. None of the above
54.How must an ammeter be connected i order to measure the current of a component in a circuit?
a. Parallel to the component
b. Mesh to the component
c. Series to the component
d. None of the above
55.What electric value remains constant in a series circuit?
a. Current
b. Voltage
c. Resistance
d. Inductance
56. What electric value remains constant in a parallel circuit?
a. Current
b. Resistance
c. Capacitance
d. Voltage
57.The diameter of a copper wire is halved. Its resistance is?
a. increase two times
b. increase three times
c. increase four times
d. increase six times
58. What is a good conductor of electricity?
a. Glass
b. Rubber
c. Gold
d. Plastic
59. What is a good insulator of electricity?
a. Bronze
b. Silver
c. Plastic
d. Copper
60. What is the capacitive reactance of a capacitor whose value i 350 pF, operating on frequency 1200
kHz?
a. 350.7 ohms
b. 450.3 ohms
c. 410.8 ohms
d. 378.9 ohms
61. A resistor with color bands red, green and orange has a value equal to:
a. 15 ohms
b. 159 ohms
c. 250000 ohms (25k ohms)
d. 2500 ohms (2.5k ohms)
62. What symbol denotes the positive the positive polarity of a battery?
a. Slash sign(/)
b. Plus sign (+)
c. X sign(x)
d. Minus sign (-)
63. What symbol denotes the negative polarity of a battery?
a. Slash sign (/)
b. X sign (x)
c. Plus sign (+)
d. Minus sign (-)
64. What wire color often connects to the positive polarity of a battery?
a. Yellow
b. Blue
c. Red
d. Black
65. What wire color often connects to the negative polarity of a battery?
a. Yellow
b. Red
c. Blue
d. Black
66. Three 1.5 volt DC batteries connected in parallel, the total voltage is
a. 2.5 volts
b. 3 volts
c. 1.5 volts
d. 4.5 volts
67. What electrical value can be concluded if one reads 5 Amperes on a component?
a. Resistive value
b. Power value
c. current value
d. Voltage value
68. What is the total inductance of 2 inductors (Microhenries) – valued at 20 µH each and are
connected in parallel?
a. 40 µH
b. 30 µH
c. 20 µH
d. 10 µH
69. What is the total inductance of 3 inductors (Millihenries) connected in series with the following
values: 3 mH, 5 mH and 22 mH?
a. 8 mH
b. 10 mH
c. 25 mH
d. 30 mH
70. What is the total current of a circuit having a voltage of 10V and total resistance of 10 ohms?
a. 1A
b. 4A
c. 8A
d. 12A
71. What electrical value can be concluded if one reads 5 uF (micofarads) on a component?
a. Voltage value
b. Capacitance value
c. Power value
d. Resistance value
72. What electrical value can be concluded if one reads 50 watts on a component?
a. Voltage value
b. Inductive value
c. Power value
d. Capacitance value
73. Amateur Radio frequency 430 Mhz – 440 Mhz belongs to what frequency?
a. HF
b. VHF
c. UHF
d. EHF
74. In AC and RF circuits that is expended in the transmission line on the delivery of power to a
complex load load but not consumed at the load can be classified as:
a. Reactive Power
b. Real Power
c. True Power
d. Imaginary Power
75. In a condition of series resonance, we can measure a current flow through that is
a. Maximum
b. Minimum
c. Zero
d. Fluctuating
76. What electrical value is 0.85 mH?
a. Resistance value
b. Capacitance value
c. Inductance value
d. Power value
77. Three resistors 4 ohms, 12 ohms, and 18 ohms are connected in series what is the total value?
a. 10 ohms
b. 16 ohms
c. 34 ohms
d. 46 ohms
78. What is the power dissipated by a load resistor supplied by 48V source and having a total current of
2A flowing through it?
a. 48 watts
b. 54 watts
c. 96 Watts
d. 102 watts
79. What is the voltage across a load dissipating 15W of power and consumes 3A of current?
a. 8V
b. 1V
c. 5V
d. 12V
80. What is the current flowing through a load having 12v measurement across it and dissipates 4W of
power?
a. 3A
b. 0.5A
c. 1.5A
d. 0.333A
81. In what component does one commonly find the resistance value in a circuit?
a. Capacitor
b. Inductor
c. Transistor
d. Resistor
82. In what component does one commonly find the inductance value in a circuit?
a. Inductor
b. Capacitor
c. Resistor
d. Transformer
83. On what component does one commonly find the capacitance value in a circuit?
a. Resistor
b. Capacitor
c. Inductor
d. Diode
84. What are included in the High Frequency range?
a. 3 MHz – 30 MHz
b. 30 MHz – 300 MHz
c. 300 MHz – 3000 MHz
d. 3 GHz – 30 GHz
85. What are included in the Very High Frequency range?
a. 3 MHz – 30 MHz
b. 30 MHz – 300MHz
c. 300 MHz – 3000 MHz
d. 3 GHz – 30 GHz
86. What are included in the Ultra High Frequency range?
a. 3 MHz – 30 MHz
b. 30 MHz – 300 MHz
c. 300 MHz – 3000 MHz
d. 3 GHz – 30 GHz
87. What is another way of writing 3000 MHz?
a. 3 GHz
b. 30 GHz
c. 3 THz
d. 30 THz
88.What does HF represent in reference to frequency range?
a. High Fidelity
b. Henry and Farad
c. High Frequency
d. None of the above
89. What does VHF represent in reference to frequency range?
a. Very High Frequency
b. Variable High Frequency
c. Very High Fidelity
d. Variable High Fidelity
90. What is another way of writing 1 kilowatt?
a. 1000 watts
b. 100 watts
c. 1000 ohms
d. 1000 volts
91. What is another way of writing 470 kilo-ohms?
a. 47,000 ohms
b. 470 ohms
c. 470,000 ohms
d. 4,700 ohms
92. What is another way of writing 1 V?
a. 1 kilo – volt
b. 1 mega – volt
c. 1000 mile – volt
d. 100 mile – volts
93. In what frequency range does the 7.095 MHz A3J signal belong to?
a. VHF
b. HF
c. UHF
d. EHF
94. 1 Micohenry is equal to
a. 0.0001 H
b. 0.00001 H
c. 0.001 H
d. 0.000001 H
95. How many micofarads are there in 1 farad?
a. 1 hundred
b. 1 thousand
c. 1 million
d. None of the above
96. For maximum current, dry cells should be connect in
a. Series
b. Parallel
c. parallel and series
d. together
97. If we increase by two times the resistance of a circuit whose voltage is kept constant. What will
happen to the current?
a. the current will be reduced to zero
b. the current will double
c. the current will he halved
d. the current will be absorbed
98. Dry (battery) cells should be connected in series to
a. to produce a lower voltage
b. to produce a higher voltage
c. to produce a constant voltage
d. None of the above
99. Storage batteries are rated in
a. voltage – hour
b. ampere – hour
c. capacitance- hour
d. inductance – hour
100. Example of a good electrical insulator
a. Aluminum
b. Tin
c. Rubber
d. copper
