BRITTTON PRESENTS YOU WITH QUALITY EXAM,TESTBANKS AND ASSIGNMENTS

For electrically operated in - sink waste disposers, what is the minimum and maximum length allowed for electrical cable? - correct answer 18 inches- 36 inches. 422.16 (B)(1)(2) Rigid metal conduit must be securely fastened within how many feet of junction box? - correct answer 3 feet. 344.30 (A) *See exceptions In a health care location where flammable anesthetics are employed, the entire area shall be considered to be a Class 1 Division 1 location that extends upward to a level of how...

There are six conductors in a race way connected to 75° C rated circuit breaker. Each wire has a 70 amp load using THHM conductors. The minimum size conductors used our #_________AWG - correct answer 4 Thermal insulation shall not be installed within _________inches of recessed lighting fixtures - correct answer 3 A 1 inch conduit contains three wire circuits or a phase system. All conductors are number 10 TW. Each circuit consist of two phase conductors and one grounding conductor and on...

Where the outer sheath of Type MI cable is made of steel _____________. A. it shall provide an adequate path to serve as an equipment grounding conductor B. a separate equipment grounding conductor shall be provided C. the grounding and grounded conductors shall be connected together D. it shall not be longer than 6 feet - correct answer B. a separate equipment grounding conductor shall be provided The interior of enclosures or raceways installed underground shall be considered to...

An advantage of an electromagnet over a permanent magnet is that... - correct answer an electromagnet can be switched. An excellent diffuser surface is one that... - correct answer scatters light uniformly in all directions Light is converted into electricity... - correct answer in a photovoltaic cell The rotating part in a DC motor is known as... - correct answer an armature A device used to pull wires through a conduit is called... - correct answer fish tape In making a resistan...

If two 10-ohm resistors are connected in series, what is the total resistance of these resistors? - correct answer 20 ohms In a split-phase motor, how much greater is the starting current when compared to the full-load current? - correct answer 6 to 8 times The terminals of a motor can be identified using a battery and a ___ - correct answer voltmeter A 5-ohm and a 20-ohm resistor are connected in parallel. What is the total resistance of these two resistors? - correct answer 4 ohms ...

A fixed light will be allowed to be 30 amp provided the socket is rated ____ duty. a. Light b. Medium c. Heavy d. Extra Heavy - correct answer c. Heavy From the Skilled Trades Act, Section 7 "Except as otherwise provided in this article or in subsection (3), and individual other than an individual who is licensed under this article and ______________ working under the direction of a holder of an electrical contractors licence, shall not in any manner undertake to execute any electrical w...

Conductors with _____ marked on the insulation are NOT approved for use in a wet location. - correct answer THHN conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, single-phase, electrical system from the local utility company. What is the MINIMUM size aluminu...

NEC Article ______ defines breakers and fuses. - correct answer According to NEC Article 100, a device that opens and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent. Annex _____ of NEC covers conduit fill. - correct answer Annex C of NEC covers conduit and tubing fill for conductors and fixture wire fill. NEMA stands for National Electrical Manufacturers Association - correct answer True - NEMA is the acronym for National Electrical Manufacturer...

XC - correct answer ______ is the letter(s) used to indicate capacitive reactance in a circuit. A) XL, B) Z, C) HZ, D) XC Conductors drawn from a copper-clad aluminum rod with the copper metallurgically bonded to an aluminum core. The copper forms a minimum of ________ percent of the csa. - correct answer 10 Relay contacts are made of ___________. - correct answer Silver Defined apparatus - correct answer The organization or system used for doing or operating something Operation o...

XC - correct answer ______ is the letter(s) used to indicate capacitive reactance in a circuit. A) XL, B) Z, C) HZ, D) XC Conductors drawn from a copper-clad aluminum rod with the copper metallurgically bonded to an aluminum core. The copper forms a minimum of ________ percent of the csa. - correct answer 10 Relay contacts are made of ___________. - correct answer Silver Defined apparatus - correct answer The organization or system used for doing or operating something Operation o...

Ferrous metal enclosures for grounding electrode conductors shall be _____. a) electrically continuous b) electrically isolated c) not permitted d) rigid metal conduit (RMC) only - correct answer A: electrically continuous Ref: 250.64(E) Unless listed for the control of other loads, general use dimmer switches shall only be used to control _____. a) switched receptacles for cord-connected incandescent luminaires b) permanently installed incandescent luminaires c) ceiling fans with lum...

The ordinary direct current series motor does not operate satisfactorily with alternating current. One of the main reasons for this is a. excessive heating due to eddy currents in the solid parts of the field structure b. that the armature current and field current are out of phase with each other c. that the field flux lags 120 in time phase with respect to the line voltage d. excessive heating due to the low voltage drop in the series field - correct answer a. excessive heating due to e...

In a farm building where livestock is housed and an equipotential plane system is required because wire mesh or other conductive elements are embedded or placed under concrete and bonded to metal structures that could become energized, the equipotential plane is necessary to minimize _____ differences within the plane. - correct answer voltage When exceptions are not to be considered, the MINIMUM voltage allowed at the line terminals of a 480-volt, three-phase, fire pump controller under moto...

1. Disregarding exceptions, dry-type transformers located indoors having a rating of greater than _____ shall be installed in a transformer room of fire-resistant construction. A. 75 KVA B. 87 1/2 KVA C. 112 1/2 KVA D. 50 KVA - correct answer C- 112 1/2 KVA 450.21(B) pg 335 2. What is the MINIMUM height allowed for a fence enclosing an outdoor installation of 2,400 volt electrical equipment? A. 6 feet B. 7 feet C. 8 feet D. 9 feet - correct answer B - 60 7 feet 110.31 pg 49 ...

neutral point - correct answer The common point on a wye-connection in a polyphase system or midpoint on a single phase, 3-wire system, or midpoint of a single phase portion of a 3-phase delta system, or a midpoint of a 3-wire, direct current system In the NEC the words ___________indicate a mandatory requirement - correct answer Shall or shall not On a four wire Delta connected system with a midpoint of one phase winding is grounded, only the conductor or bus bar having a higher phase vol...

NEC Article ______ defines breakers and fuses. - correct answer According to NEC Article 100, a device that opens and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent. Annex _____ of NEC covers conduit fill. - correct answer Annex C of NEC covers conduit and tubing fill for conductors and fixture wire fill. NEMA stands for National Electrical Manufacturers Association - correct answer True - NEMA is the acronym for National Electrical Manufacturer...

A 150 kVA service transformer has a 480Y/277 volt 3-phase primary and a 208Y/120 volt, 3-phase secondary. What is the approximate full-load ampere rating of the primary of the transformer? - correct answer180 amperes Where a conductor is marked RHW-2 on the insulation what does the "-2" represent? - correct answerThe conductor has a maximum operating temperate of 90 degrees C. For a grounded electrical system supplied by a feeder or branch circuit, the equipment grounding conductor shall...

According to the National Electrical Code, the minimum size TW copper conductor for a 5 HP, 3 phase, 230 volt, squirrel cage motor started at full voltage shall not be less than # ___ AWG. - correct answer 14 How many AWG #12 THHN conductors are allowed in a 1" RMC nipple? - correct answer 35 wires How many AWG #12 THHN conductors are allowed in a 1" RMC? - correct answer 26 #12 THHN conductors The circular mil area of a #18 AWG would be ___ CMILS for solid or stranded. - correc...

Type ____ is multiconductor cable identified for use as underground service entrance cable. - correct answer Type USE cable Knife switch rated for more than 1200 Amps at 250Volts or less - correct answer Can be used only as isolating switch, shall not be opened under load Track lighting with outlets in a bathroom is not allowed because ? - correct answer Track lighting has receptacle Where internal combustion engines are used as the prime motor, an on site fuel supply shall be provided ...

Given: Two separate Services are identical in voltage and amperage, except that one service serves only motor - loads and the other serves lighting loads only. in the event of a short circuit in these services, the available short circuit current will be: A) The same in either service B) Higher in the motor-load service C) Higher in the lighting -load service D) 25% greater in the service for the motor load - correct answer The same in either service (general knowledge) ...