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Electrical Theory Path to Excellence 280 Targeted Questions for Top Grades Answer Keys Unlocked: Navigate Your Way to Success|16 Pages

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Course
Electrical Theory Path

Institution
Electrical Theory Path

1.- Nonshielded conductors over 700 V shall be __________ - ️️GROUNDED 2.- What is the minimum distance that is allowed between switchgear and an outdoor oil storage tank? - ️️10 Feet. 3.- What is the minimum vertical separation on a Pole between the supply cable and the lowest communicat...

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Uploaded on October 8, 2024
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electrical theory path to excellence

Institution Electrical Theory Path
Course Electrical Theory Path

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Electrical Theory Path to Excellence 280
Targeted Questions for Top Grades
1.- Nonshielded conductors over 700 V shall be __________ - ✔ ✔ GROUNDED

2.- What is the minimum distance that is allowed between switchgear and an outdoor oil storage tank? -
✔ ✔ 10 Feet.

3.- What is the minimum vertical separation on a Pole between the supply cable and the lowest
communication attachment. - ✔ ✔ 16 Inches

4.- The vertical clearance for insulated communication conductors above or crossing Railroads tracks
shall be __________feet. - ✔ ✔ 23.5 Feet

5.- Minimum clearance for non-insulated communications conductors over pedestrian walkways shall be
__________feet. - ✔ ✔ 12 Feet

6.- Minimum clearance of open supply conductors over 750 V to 22 KV crossing over bridges shall be
___________feet. - ✔ ✔ 5.5 Feet.

7.- The minimum vertical clearance between ordinary supply conductors over 8.7 KV and
communications conductors shall be _______inches. - ✔ ✔ 40 + 0.4 per KV over 8.7 KV

8.- Backfill within 6" of conduit should be free of solid material greater than __________maximum
dimension. - ✔ ✔ 4 Inches.

9.- In Underground structures, horizontal runs of supply cables shall be supported at least ______above
the floor. - ✔ ✔ 3 Inches.

10.- What is the minimum burial depth for a 22 KV conductor? - ✔ ✔ 30 Inches

11.- What is the minimum flush burial depth of a 500 Volt conductor? - ✔ ✔ 24 Inches.

12.- Pad mounted equipment shall not be located less than ______feet from hydrants - ✔ ✔ 4 Feet.

13.- Bonding shall be provided between all above ground metallic power and communication apparatus
that are separated _______ or less. - ✔ ✔ 6 Feet.

14.- According to the NESC, fall protection is required for over ________ feet elevation. - ✔ ✔ 10
Feet.

15.- A buried_________ Shall be used to bond across a gate, unless a non-conducting fence section is
used. - ✔ ✔ Bonding Jumper.

,16.- Where guarding is required, grounding conductor guards should extend for not less than
______feet above the ground or platform from which the grounding conductors are accessible to the
public. - ✔ ✔ 8 Feet.

17.- Strips of metal not less than_______ in total length constitute an acceptably made electrode. - ✔
✔ 10 Feet.

18.- In areas with high soil sensitivity or shallow bedrock, buried strips of metal not less than _______in
total length, constitute an acceptably made electrode. - ✔ ✔ 10 Feet.

19.- Pole butt plates shall not be less than ______thick. - ✔ ✔ 1/4 Inch.

20.- Copper wire wrap shall have a continuous bare length below the ground level not less than
_______Feet. - ✔ ✔ 12 Feet.

21.- Copper wire wrap shall not be smallest than _______. - ✔ ✔ 6 AWG.

22.- Minimum overhang for insulated communication conductors over Roads and Parking Lots Shall be
______Feet - ✔ ✔ 15.5 Feet.

23.- The suppler or conductor that installs house fire warning is required to provide the building owner
with all the following materials except: - ✔ ✔ Drawing that shows the interconnection of Tandem
connected detectors

24.- On a Beam Ceiling where the Beams are less than 12" in depth and spacing is less than 96", where
should the smoke detectors be mounted. - ✔ ✔ Bottom of the Beam

25.- The maximum Air velocity for a smoke detector is __________ - ✔ ✔ 300 Fpm.

26.- Visible notification appliances located in corridors shall be space no more than ______feet apart -
✔ ✔ 100 Feet.

27.- Given: A smoke detection system is been installed to automatically close a double door way in
response to smoke blowing in either direction. The ceiling is smooth, where must be the smoke detector
be installed? - ✔ ✔ On the center line of the doorway.

28.- On a voice alarm System, what is the minimum number of cycles it has to report an evacuation
procedure? - ✔ ✔ 2

29.- A single store dwelling unit has two bedrooms that are not located near to one another. What is the
minimum required number of smoke alarms required? - ✔ ✔ 4

30.- HEAT DETECTORS used within a single family unit must be listed or approved for not less than
_______spacing - ✔ ✔ 50 Feet.

31.- What is a privately owned and monitored alarm system classified as? - ✔ ✔ Proprietary System.

, 32.- What is a Decibel? - ✔ ✔ 1/10 of a Bell.

33.- Notification appliances of a local protective signaling system must include on their
nameplate_______. - ✔ ✔ Electrical requirements & Rated audible or visible performance

34.- A fire alarm system is required or a visible notification device when the ambient sound is Greater
than ? - ✔ ✔ 105 dBa.

35.- What is the maximum blink rate on a strobe light on a notification appliance per second? - ✔ ✔
2.

36.- What is the maximum interval that a fire alarm signal is allowed at the console? - ✔ ✔ 15 sec.

37.- What is the detector that is mounted on the ceiling or wall that reacts to converted Thermal
reaction? - ✔ ✔ HEAT DETECTOR.

38.- Components that are non fire alarm and connected commonly to fire alarm, components are
considered what type of system? - ✔ ✔ Combination System.

39.- Electrical Power is measured in _____________ - ✔ ✔ WATTS.

40.- You have a frequency that has been amplified to four frequencies. This change is called: - ✔ ✔
FREQUENCY MULTIPLEXING.

41.- What type of a Network is not considered Multipoint. - ✔ ✔ Point to Point.

42.- When a company ties together different devices such as COMPUTERS & PRINTERS, What is the
result? - ✔ ✔ A Network.

43.- Which part of a Power supply converts electrical current from AC to DC? - ✔ ✔ RECTIFER.

44.- The standard Impedance of a video Coaxial cable is _____ Ohms - ✔ ✔ 75 Ohms.

45.- Telecom Wire is grounded on each end. What is the electrical Path called? - ✔ ✔ Ground Loop

46.- A voltmeter will test all of the following, except: - ✔ ✔ POWER.

47.- What is the disadvantages of Fiber Optics over Copper? - ✔ ✔ COST.

48.- What is the measurement of the amount of signal for Fiber Optics? - ✔ ✔ BANDWIDTH

49.- Switch S1 is in the ON position but light L does not come on. Voltages across S1 is measured to be
120 Volts, Voltage across L1 is measured to be 0 Volts. The light does not come on because: - ✔ ✔
Lamp is good, but the switch does not make contact.

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Exam (elaborations)

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