TestWizard - Test

��: Test

��

1. 1.Electrical installation equipment divided into two groups:
1) a) divided and shared
2) b) external and internal
3) c)high voltage and low voltage
4) d)series and parallel
2. 2.What is the color of the neutral conductor in the European Standard
1) a) grey
2) b) green
3) c) blue
4) d) yellow
3. 3.What type of circuit is used in homes?
1) a) series
2) b) parallel
3) c) hybrid
4) d) now of the above
4. 4.Voltmeter has low value of resistance and is connected in parallel in any circuit
1) a) false
2) b) true
3) c) both of them
4) d) no one
5. 5.Ohm meter is used to measure which of following quantities
1) a) Installation resistance
2) b) reactive power
3) c) power factor
4) d) circuit resistance
6. 6.Megger is used to measure which of the following
1) a) voltage surges of spike
2) b) ground fault
3) c) position of the system
4) d) /
7. 7.Before starting the installation work you need to�
1) a) transfer the wiring diagram to the surface of the walls
2) b) switch off all electrical power source
3) c) clean the workplace make it free from unnecessary things
4) d) none above
8. 8.How can the cable laying be done?
1) a) on the surface of the ceiling
2) b) in the floor
3) c) all above
4) d) on the walls
9. 9.Where we can install mounting and branding boxes?
1) a) on the surface of ceiling
2) b) in the floor
3) c) in the place where we have free access
4) d) out of doors
10. 10.Which option does not apply to the types of fastening
1) a) open fixation
2) b) closed fixation
3) c) special fixation
4) d) conceded fixation
11. 11.Types of electrical outlets
1) a) A, C
2) b) B, C
3) c) D, A
4) d) B, A
12. 12.How many types of fastener design exist for open wire fixation
1) a) 5
2) b) 4
3) c) 12
4) d) 6
13. 13.What equipment is intended for connecting and distributing cable cores indoor?
1) a) cables
2) b) terminal
3) c) junction box
4) d) wires
14. 14.According to the classification of the IEC, �standard types of electrical outlets(sockets) are used in the world
1) a) 10
2) b) 14
3) c) 18
4) d) 16
15. 15.If we consider switches according to the method of installation, then there�re a main type:
1) a) underground and hidden
2) b) external interned
3) c) air and water install
4) d) none the correct
16. 1.The color of the ground wire?
1) a) green yellow
2) b) brown
3) c) black
4) d) all correct
17. 2.What does the � STOP � look like in the diagram?
1) a)
2) b)
3) c)
4) d) none of these
18. 3.How look circuit breakers in a diagram:
1) a)
2) b)
3) c)
4) d) all correct
19. 4.Motor in scheme?
1) a)
2) b)
3) c)
4) d) all correct
20. 5.What is the maximum number of multiconductor cables permitted in an if-inch wide by 4-inch deep ladder hype cable tray
1) a) 144/144
2) b) 183/146
3) �) 184/147
4) d) 366/366
21. 6.The resistance of 24m length cable of cross-sectional area 2mm² and resistivity 2-10^-8 Ω
1) a) 0.02 Ω
2) b) 20 Ω
3) c) 0.02m Ω
4) d) 200 Ω
22. 7.What is minimum cross-sectional area of an aluminum cable core
1) a) 1.5 sq
2) b) 2.5 sq
3) c) 1 sq
4) d) 2 sq
23. 8.The formulas of Power
1) a) P = I * V
2) b) P = R * I
3) c) P = R * V
4) d) P = W * R
24. 9.Which of these does not relate to the typical elements of electrical installation?
1) a) connection of wires
2) b) soldering wires
3) c) fastening of wires
4) d) installing junction box
25. 10.What kind of instruments are used in electrical installation work?
1) a) wattmeter
2) b) ohmmeter
3) c) ammeter
4) d) megger
26. 11.
1) a) earth
2) b) light
3) c) single
4) d) material
27. 12.Using what formula can the power consumption of electrical equipment can be calculated?\\
1) a) R = V/ I
2) b) I = q / t
3) c) P = I * V
4) d) R = p * l/S
28. 13.What is the symbol?
1) a) fuse
2) b) residual current device
3) c) switch
4) d) load
29. 14.What is the symbol?
1) a) switch
2) b) magnetic starter
3) c) circuit breaker
4) d) outlet
30. 1.What material is often used for the conductor?
1) a) silver
2) b) gold
3) c) iron
4) d) copper
31. 2.What is insulator?
1) a) a substance or device which conduct electricity
2) b) a substance or device which doesn�t conduct electricity
3) c) potential difference between two points
4) d) none of the above
32. 3.What material are used to protect the wires?
1) a) copper
2) b) robber
3) c) silicon
4) d) aluminum
33. 4._____ an insulated wire or wires having a protective caring and used for transmitting electricity or telecommunication signals
1) a) cable
2) b) busbar
3) c) capacitor
4) d) resistor
34. 5.Which material is a better conductor or electricity
1) a) metals
2) b) ceramics
3) c) plastic
4) d) glass
35. 6.Which material is none brittle
1) a) metal
2) b) ceramics
3) c) polymers
4) d) fibers
36. 7.An one attributes of ceramics export
1) a) covalent bonded
2) b) low melting point
3) c) high stiffness
4) d) high hardness
37. 8.Commonly used conducting materials are
1) a) copper and silver
2) b) copper
3) c) platinum
4) d) cupper and aluminum
38. 9.What do we use grounding for
1) a) for maintenance the equipment and tools
2) b) for protection from current
3) c) for keeping circuit in normal condition
4) d) none above
39. 10.What type of admission should have electrician to allow electrical installation work?
1) a) class 3 only
2) b) class 1
3) c) class 1 and 3
4) d) class 2
40. 11.For what megohmmeter measures?
1) a) current
2) b) voltage
3) c) inductance
4) d) resistance
41. 12.What kind of tools we use while working with the electrical devices(cb,scheme)?
1) a) PPE
2) b) insulation
3) c) grounding
4) d) isolation
42. 13.How many classes have an during working with the levels of voltage (mv, lv , hv)
1) a) 3
2) b) 2
3) c) 5
4) d) 4
43. 1)Types of Fasteners for open electrical wiring:
1) a) dowel clamp
2) b) nails
3) screws
4) d) nut and bolts
44. 2)What should be considered before installing socket
1) a) circuit breaker ratings
2) b) types of cable
3) c) cress-section of wires
4) d) all of them
45. 3)Must have tools for domestic electrical installation
1) a) Chain saw
2) b) Nut wrench
3) c) Measuring instruments (multimeter)
4) d) None of them
46. 4)Neutral goes through switch. Consequences:
1) a) Not allowed by ��
2) b) It remains energized
3) c) May be electrical shock
4) d)All correct
47. 5)How many types have trays:
1) a)4
2) b)2
3) c)6
4) d)5
48. 6)Working with voltage up to 1 kV, it�s mandatory to use :
1) a)Dielectric tool, mats
2) b)Dielectric gloves and boots (PPE)
3) c)Voltage indicators
4) d)All above
49. 7)What tool should be used when bending strands of cooper and aluminum wires and strands of control cables into ring
1) a) Round nose pliers
2) b) Pliers
3) c) Special fixture
4) d) Knife
50. 8) In what color are the elements of equipment belonging to the phases painted.
1) a) A-red, B-blue, C-yellow
2) b) A-green, B-white, C-blue
3) c)A-yellow, B-green, C-red
4) d)A-green, B-yellow, C-red
51. 9)What voltage is considered low voltage
1) a)Under 10 kV
2) b)Under 1000V
3) c)Under 680V
4) d)Under 380V
52. 10)What�s the optional spacing between fasteners?
1) a)40-50 cm
2) b)20-30 cm
3) c)10 cm
4) d)5 cm
53. 11)What kind instruments he use during installation of socket?
1) a)Screwdriver, PPE, pliers, multimeter, knife
2) b)Grinder, pounder, suppressor, MCCB
3) c)MCB, multimeter, file for metal
4) d) Corner loop machine, knife, scrap
54. 12)What do you need to do before you install switch or socket?
1) a)Go out
2) b)Install RCD
3) c)Nothing
4) d)De-energize everything and check for presence of voltage
55. 13)What you have to do in case of fire during installation?
1) a)Use fire extinguisher and push alarm
2) b)Use water
3) c)Use gunpowder
4) d)Use chemicals
56. 14)What are the stages of equipment installation?
1) a)installation, commissioning and operation
2) b)unloading, transfer, installation
3) c)commissioning, inspection, start-up
4) d)procurement, distribution
57. 15)What types of work are there?
1) a)complex and easy
2) b)long and short
3) c)external and internal
4) d)dangerous and safe
58. 16)Which of these not suitable here?
1) a)Stripper
2) b)Electric tape
3) c)Pliers
4) d)Screwdriver
59. 17)Must have tool for working with electrical wiring
1) a)hammer
2) b)multimeter
3) c)ruler
4) d)all the above
60. 18)What should we do firstly before electrical wiring?
1) a)de-energize
2) b)read manual
3) c)drink at workplace
4) d)disconnect lightning
61. 19)What color is ground wire?
1) a)brown
2) b)blue
3) c)green/yellow
4) d)red
62. 20)How many positions has a switch?
1) a)3
2) b)1
3) c)0
4) d)2
63. 1)
1) a)power transformer
2) b)current transformer
3) c)amperemeter
4) d)circuit breaker
64. 2)Cross section of cable for socket:
1) a)0,5 mm
2) b)1,5 mm
3) c)2,5 mm
4) d)4 mm
65. 3)Conductor conductivity ampere must be � circuit breaker
1) a)more than
2) b)same as
3) c)less than
4) d)none is correct
66. 4)How to choose the required cable cross-section
1) a)depending on types of load
2) b)rated current of protection device
3) c)depending on load
4) d)all is correct
67. 5)Which class rating we use in domestic
1) a)C class
2) b)B-class
3) c)A-class
4) d)D-class
68. 6)Armored cables prevents from
1) a)Mechanical condition
2) b)Fire
3) c)Short circuit
4) d)Overload
69. 7)
1) a) Switch
2) b)transformer
3) c)Motor
4) d)Bulb
70. 8)How to determine the required cable cross-section area?
1) a)By eye
2) b)using the formula
3) c)by touch
4) d)using the available cross section
71. 9)Conditional graphic designation of the capacitor
1) a)
2) b)
3) c)
4) d)
72. 10)What can be used to connect the wires?
1) a)terminals
2) b)soldering insulation
3) c)touching one to another
4) d) twisting between each other
73. 11)Conductor conductivity ampere must be � circuit breaker
1) a)more than
2) b)same as
3) c)less than
4) d)none is correct
74. 12)What is formula of power?
1) A)P=U÷R
2) b) P=R÷U
3) c) P=U÷I
4) d) P=I×UT
75. 1)How many types of electrical materials?
1) a)2
2) b)3
3) c)4
4) d)6
76. 2)The maximum rotation of the angle of trays should be:
1) a)70
2) b)90
3) c)120
4) d)60
77. 3) what is it?
1) a)CB
2) b)Lamp
3) c)Contactor
4) d)Switch
78. 4)What is the best conductor
1) a)copper
2) b)steel
3) c)glass
4) d)aluminum alloy
79. 5)Color of neutral wire
1) a)red
2) b)brown
3) c)yellow
4) d)blue
80. 6)What equipment do we use to measure resistance
1) a)multimeter
2) b)clamp meter
3) c)Megger
4) d)Oscilloscope
81. 7)What properties should the insulation be?
1) a)high insulation
2) b) less cost
3) c)high resistivity
4) d)all correct
82. 8)Types of conductors
1) a)good conductors, semiconductors ,insulators
2) b)copper ,silver ,aluminum
3) c)wood ,steel ,resistors
4) d)short ,long ,solid state
83. 9)What property does insulation have?
1) a)don�t conduct electricity
2) b)saving temperature
3) c)high tensity
4) d)softness and elasticity
84. 1. If an ammeter is connected in parallel to a circuit, it is likely to be damaged due to excess
1) a. current
2) b. resistance
3) c. voltage
4) d. all of above
85. 2. In order to measure the electric current flow through it, an ammeter is placed in � with a circuit element.
1) a. parallel
2) b. series
3) c. none of the above
4) d. all of the above
86. 3. A megohmmeter measures the � by applying a voltage across the insulation and measuring the amount of current that �leaks� through
1) a. quality of power of insulators
2) b. quality of resistance of insulators
3) c. quality of current of insulators
4) d. quality of voltage of insulators
87. 4. An ideal ammeter has � so that the circuit in which it has been placed is not disturbed.
1) a. high resistance
2) b. medium resistance
3) c. low resistance
4) d. zero resistance
88. 5. Megohmmeters, which can provide high DC voltages that typically range from � to �
1) a. 100V to 1kV
2) b. 200v to 1kV
3) c. 300V to 3kV
4) d. 500 V to 5 kV
89. 6. How many types of ammeters exist?
1) a. 3
2) b. 4
3) c. 7
4) d. 5
90. 7. The extra circuit losses produced by the ammeter are called its "burden" on the measured circuit
1) a. ammeter load
2) b. current loss
3) c. burden
4) d. circuit load
91. 8. When measuring, the ammeter should be connected in series to the low potential side of the circuit under test.
1) a. Parallel, high potential side
2) b. Parallel, low potential side
3) c. Series, high potential side
4) d. Series, low potential side
92. 9. A megohmmeter is an electric meter that measures � values by sending a high voltage signal into the object being tested.
1) a. Low resistance
2) b. Very high resistance
3) c. Very low resistance
4) d. All of the above
93. 10. Typically, the smallest value that a megohmmeter can supply is � volts
1) a. 10
2) b. 100
3) c. 1000
4) d. 10000
94. 11. Depending on the structure of the resistances, there are several types of ohmmeters:
1) a. 6
2) b. 5
3) c. 4
4) d. 2
95. 12. VOM stands for:
1) a. Voltage-ohm-milliammeter
2) b. Voltage-ohm-megoammeter
3) c. Voltage-ohm-microammeter
4) d. Voltage-ohm-miniammeter
96. 13. VOM also known as:
1) a. Electric meter
2) b. Avometer
3) c. Altimeter
4) d. Multimeter
97. 14. A multimeter is the combination of a DC voltmeter, AC voltmeter, ammeter, and ohmmeter.
1) a. Voltmeter, wattmeter, ammeter
2) b. Ohmmeter, voltmeter, ammeter
3) c. Wattmeter, voltmeter, ammeter
4) d. Wattmeter, ohmmeter, voltmeter
98. 15. How many types of multimeter exist?
1) a. 1
2) b. 3
3) c. 2
4) d. 4
99. 16. In the ohmmeter it indicates the value of measurement on the scale. It deflects or moves based on resistance value.
1) a. Pointer
2) b. Display
3) c. Dial
4) d. Selector knob
100. 17. Micro-ohmmeter measures relatively low resistance in the range of � to �
1) a. 1Ω to 2000Ω
2) b. 1�Ω to 3000Ω
3) c. 1�Ω to 2500Ω
4) d. 1Ω to 5000Ω
101. 18. Find outs low resistance values, Precision bridge circuit, heater elements
1) a. Digital ohmmeter
2) b. Series ohmmeter
3) c. Shunt type ohmmeter
4) d. Mega-ohmmeter
102. 19. How to fix a multimeter that does not work?
1) a. Check resistance
2) b. Battery check
3) c. Replacement varistor
4) d. Test leads
103. 20. Rectifier Ammeter AC measurement which is connected to secondary of a ... transformer
1) a. Current
2) b. Potential
3) c. Distribution
4) d. Step up
104. 21. The voltages used in Megger insulation testing can range from ... V to ... V
1) a. 40 to 40 000
2) b. 50 to 50 000
3) c. 55 to 55 000
4) d. 45 to 54 000
105. 22. Advantages of analog multimeters:
1) a. Maximum possible measurement accuracy
2) b. Multifunctionality
3) c. Resistance to mechanical damage
4) d. Instant display of the dynamics of the signal change
106. 23. LED indicator (.../ ... - indicates battery discharge)
1) a. Yellow, blue
2) b. Red, yellow
3) c. Blue, red
4) d. Red, green
107. 24. LCD display (the display shows the received ...)
1) a. Data
2) b. Information
3) c. Numbers
4) d. Nothing
108. 25. LoZ also known as:
1) a. measurement of low voltage
2) b. measurement of low current
3) c. measurement of low impedance
4) d. measurement of low resistance
109. 26. Digital multimeters are modern, reliable measuring devices characterized by high measurement accuracy
1) a. low
2) b. medium
3) c. high
4) d. instrument
110. 27. The front panel of the digital multimeter consists of ... main units
1) a. 4
2) b. 3
3) c. 1
4) d. 5
111. 28. Main functions of multimetes are
1) a. measuring of direct and alternating current
2) b. measuring of voltage of direct current and alternating current
3) c. measuring of resistance, electrical capacitance and inductance
4) d. all the above
112. 29. How many types of failures in measurement
1) a. 2
2) b. 3
3) c. 5
4) d. 6
113. 30. The systematic failures are mainly classified into ... categories
1) a. Two
2) b. Four
3) c. One
4) d. three
114. 31. The symbol for an ammeter in an electric circuit is the letter "..." confined within a circle
1) a. V
2) b. Z
3) c. A
4) d. R
115. 32. What is principle of ammeter?
1) a. utilizing the magnetic effect of electric current
2) b. utilizing the power factor of electric current
3) c. utilizing the galvanometer of electric current
4) d. none the above
116. 33. Analog meters are needed to measure small currents because
1) a. analog meters are sometimes very sensitive and only require .00005 amps to produce full-scale deflection
2) b. analog meters are sometimes very cost and only require .05 amps to produce full-scale deflection
3) c. analog meters are usually very cheaper and only require .005 amps to produce full-scale deflection
4) d. analog meters are usually very cost and not only require .05 amps to produce full-scale deflection
117. 34. A shunt is a resistor that is in series with the multimeters leads that increases the range of a multimeter when measuring ...
1) a. voltage
2) b. resistance
3) c. current
4) d. imductance
118. 35. Which terminal is always used?
1) a. V, Ω
2) b. 2 A
3) c. 10 A
4) d. COM
119. 36. Which setting should be used to test a fuse?
1) a. Continuity
2) b. Voltage19
3) c. Current
4) d. hFE
120. 37. Why must particular care be taken when measuring current?
1) a. The fuse can blow
2) b. The readings might be too small
3) c. The readings might be too large
4) d. It can flatten the battery in the multimeter
121. 38. Which of the following quantities cannot be measured using Multi-Meter:
1) a. Voltage
2) b. Resistance
3) c. Current
4) d. Power Factor
122. 1. When a noncombustible wall finish is used, an outlet box may be recessed __________.
1) A) 1/4"
2) B) 1/8"
3) C) 1/2"
4) D) 3/4"
123. 2. A feeder is used to connect __________.
1) A) the main service panel and a subpanel
2) B) branch circuits to circuit breakers
3) C) the main panel and duplex receptacles
4) D) the service drop to the main panelboard
124. 3. Which type of cable with a corrugated sheath has a maximum bend radius of 7 times the cable diameter?
1) A) Type MC
2) B) Type AC
3) C) Type SE
4) D) Type NM
125. 4. According to the NEC, which of the following is required for the small appliance loads in each kitchen area?
1) A) Two 120V, 20A small appliance branch circuits
2) B) One 1,500VA, 20A small appliance branch circuit
3) C) One 4,050VA small appliance branch circuit
4) D) Two 240V, 10A small appliance branch circuits
126. 5. According to NEC Section 220.53, loads for which of the following appliances shall be permissible to apply a demand factor of 75%?
1) A) fixed appliances
2) B) kitchen appliances
3) C) heating appliances
4) D) small appliances
127. 6. Which of the following is an NEC approved grounding electrode?
1) A) Metal underground water pipe in direct contact with the earth for 10 feet.
2) B) Metal underground gas pipe in direct contact with the earth for 10 feet
3) C) A ground ring with a 25 foot diameter
4) D) a 5/8 inch galvanized aluminum rod 5 feet in length
128. 7. The minimum clearance of service drop conductors over a residential driveway is reduced to 12 feet when the voltage is limited to
1) A) 500V to ground
2) B) 300V to ground
3) C) 319V to ground
4) D) 310V to ground
129. 8. The section of the NEC that lists the requirements for installing service disconnecting means is
1) A) NEC Section 230.70
2) B) NEC Section 110.26
3) C) NEC Section 230.6
4) D) NEC Section 220.54
130. 9. Cables routed through bored holes in framing members must maintain a distance from the nearest edge of not less than
1) A) 1-1/4 inches
2) B) 1/4 inch
3) C) 1-1/2 inches
4) D) 1/16 inch
131. 10. When used as an outside service-entrance conductor, which of the following must be secured every 30 inches?
1) A) Type SE cable
2) B) Type NM cable
3) C) Type MC cable
4) D) Type AC cable
132. 11. To control a device from three locations, a four-way switch must be used with which of the following?
1) A) two three-way switches
2) B) One photoelectric switch
3) C) four three-way switches
4) D) one two-pole switch
133. 12. To control stairway lighting, a wall switch is required at each level when how many risers separate levels?
1) A) six or more
2) B) Three or more
3) C) five or more
4) D) four or more
134. 13. Which section of the NEC covers the installation of pools and spas?
1) A) NEC Section 680
2) B) NEC Section 250
3) C) NEC Section 340
4) D) NEC Section 725
135. 14. Thinwall metal conduit is usually chosen for areas where it will be ... ?
1) A) Hidden
2) B) Exposed
3) C) Well protected
4) D) All answers correct
136. 15. Most common types of single conductor wires are:
1) A) THW
2) B) THWN
3) C) THHN
4) D) All answer correct
137. 16. In what spiral metal armor excels conduit?
1) A) It's more flexible
2) B) It's more durable
3) C) It's less expensive
4) D) It's more heat resistant
138. 17. What is "NM" stands for?
1) A) nonmetallic source
2) B) negative charge
3) C) nonmetallic sheathed
4) D) nuclear stripper
139. Final
1) Erkebula
2) Iliyas
3) Dauletus

����: Test

������ ��������

��: Test

��