Electrical BUNDLED Exams questions and complete correct answers 2024

If the cover for an underground pull box used for circuits over 600v is not locked, bolted, or screwed into place, then it must weigh equal to - correct answer 100 pounds The maximum total voltage droop on a branch circuit is - correct answer 3% the floors of vaults in contact with the earth s...

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) H...

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 o...

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 3...

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" represe...

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...

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 mand...

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 th...

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 _____ differenc...

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 ot...

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 ...

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. - co...

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. - co...

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...