In each blank, try to type in the
word that is missing. If you've
typed in the correct word, the
blank will turn green.
If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. Question: Class one copper lightning protection terminals have a min.diameter Answer: 3/8 Question: 2 copper air terminalAnswer: 1/2 Question: Class 1 air tetminalAnswer: 1/2 Question: 2 aluminum air terminalAnswer: 5/8 Question: Class Answer: 75' or lower than class 2 Question: Class Answer: 75' larger and Question: Rods min. DepthAnswer: 10 ft. Question: What needs to be at least 10 inches above the of area its protecting of lightning strikesAnswer: The tip of the air Question: For lightning protection systems all structures require at least 2 down and at least one additional down conductorAnswer: For 100 ft. Of roof perimeter over 250 ft. Question: NFPA _______ is the standard for the installation of lightning protection systemsAnswer: Question: 4 main parts of lightning protection Answer: 1.intercept 2.strike termination devices3.termunal4.lightning Question: 2nd part lightning strikes down the building.includs the bonding of metallic bodies to a LPS conductors in an attempt to keep all metallic components at ___________during lightning strike eventAnswer: Equal Question: 3rd Answer: Disperses lightning strike safety to earth materials,ground rods ,ground rings,radials Question: 4th Answer: Surge suppression devices to dispose of ant unwanted electrical currents attempting to the building through conductive wiring Question: Bimetallic can't be used within______ of earths surfaceAnswer: 18 Question: Ground ring Answer: Conductor encircles a structure that is in direct with earth Question: If you have pride you also have to Answer: and dedication Question: LabelledAnswer: It means there is some sort of or identifying mark from an organization that is acceptable to AHJ Question: ListedAnswer: When it is on a list by an organization Question: Loop Answer: A conductor that encircles a structure that interconnecs ground Question: Depth of before encasement in concreteAnswer: Less than 18 Question: How many feet between of cablesAnswer: 3ft. Question: Air terminals that extend 24 inches above an object are permitted to be in place of intervals not exceeding ______Answer: 25 ft. Question: Lightning protection in a and crawl space?Answer: Close as possible to outer Question: Bonding Answer: A conductor used for equalization between grounded metal bodies and a LPS Question: The surge protection devices installed at a entrance have a min rating of 40 ka and a nominal discharge ofAnswer: 20 Question: Main Answer: A conductor that carries lightning currents between strike terminations devices and grounding Question: What is not on a motor plateAnswer: VA Question: The output of an alternator is controlled by a or rotor wire length strength of magnetic fieldAnswer: Speed of RPM,speed of generator Question: Magnetic flux is and magnetic force is strongest Answer: At the north pole to south pole Question: Change the direction of DC Answer: Question: Change the direction of ac Answer: the legs Question: Trouble shooting use aAnswer: multi meter Question: What is to the rotor of a wound rotor motor specifically the set of secondary resistorAnswer: Slip Question: 1 HP =Answer: 746 Question: The actual voltage applied to s motor should be within plus or minus_____ of the motors nameplate voltageAnswer: 10% Question: Motor power is rated Answer: /watts Question: Motor Answer: Normal starting torque and starting current Question: Motor Answer: Normal starting torque low starting current *most Question: Motor CAnswer: Has a high torque and low starting current Question: Motor Answer: High torque high slip and low starting current Question: A _______ DC motor has the highest starting torque characteristicAnswer: Question: In a 2 pole single phase motor the start winding is placed ____ from the run windingAnswer: 90 Question: In a capacitor motor forward and reverse I'd controlled by a Answer: Drum Question: The _______ of a squirrel cage induction motor are short cktAnswer: windings Question: The ______ of a wound rotor motor ate not short cktAnswer: windings Question: The _______is used in a DC generator to keep the polarity and output in one directionAnswer: Question: Overload Answer: Time delay devices that temporary overloads without disconnecting the motor Question: colorsAnswer: Blue red Question: Secondary Answer: Cyan magenta Question: How do u measure Answer: Question: What lighting is Answer: A Question: The visual task occurs at the ______ in the kitchenAnswer: level Question: maintenanceAnswer: Describes how long a source will retain its own lumen output Question: What is Answer: affective disorder Question: SAD and are known as what type of issueAnswer: Photo disorfet Question: Argon and Answer: Combined with vaporized mercury produce visible with phosphor Question: Chief disadvantage to use his and ballast lifting systems is Answer: Lumen Question: Configurable Answer: Relay designed to accept sets of contacts called add ons Question: control relayAnswer: Electromagnetic relay that consists of several contacts typically 2-8 up to Question: Interposing Answer: A really that enables the in a high power ckt to be switched by a low power control signal Question: d.b. for hazardous situation Answer: 25 ambient sound Question: What % of the used motorsAnswer: 63% Question: Type of Answer: Type 1 I door,2 outdoor,3 both 4 Question: Size iecAnswer: 16 or 22.5 Question: NemaAnswer: 30.5 |
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