__03._calculating_power_energy_&_cost_

Calculate the assigned values in the circuits below.       E2 = ________            E3 = _________          E6 = _________          E9 = _________ E11 = ________           E13 = _________         RT = ________            R6 = __________ IT = _________           I5   = __________        I7 = _________           I10 = __________ PT = ________

6.a. Extreme _______ may cause some nonmetallic conduits to become brittle and therefore moresusceptible to damage from physical contact.A. coldB. corrosionC. voltageD. heat6.b. Snap switches are permitted to be grouped or ganged in an enclosure provided the voltage between theadjacent snap switches does not exceed ___ V.A. 400B. 300C. 200D. 100

Determine the current, voltage and power dissipated by each of the 6 resisters in the following circuit: R47:     V:_______   I:_______   P:_______ R16:    V:_______   I:_______   P:_______ R5:     V:_______   I:_______   P:_______ R40:    V:_______   I:_______   P:_______ R22:    V:_______   I:_______   P:_______ R2 :     V:_______   I:_______   P:_______

6. Ferrous metal raceways or enclosures are made with _______ content.A. brass or aluminumB. steel or brassC. aluminum or ironD. iron or steel

A device used in kitchen serving hotels dining rooms club houses and restaurants is__________. a.) Grease basin b.) Yard basin       c.) Garage basin         d.) Oil catch basin

Potential energy, or voltage, introduced into a circuit is called a(n) ____________________.

1.1 PV modules can be wired together in an array using ______ connections to increase voltage. a. Terminating b. Series c. Parallel d. AC 1.2 A PV module, also called a solar panel, is comprised of individual photovoltaic _______ wired and mounted together as an integrated unit. a. Capsules b. Compartments c. Chips d. Cells   1.3 A __________ system uses a storage system that stores the generated electricity so it can provide during times when the system’s panels are not receiving solar energy. a. Direct coupled b. Self regulating c. Charge controlled d. Indirectly connected   1. 4 __________ energy may have the potential to supply all of the world's energy needs, but at this time, it provides a very small percentage. a. Coal b. Natural Gas c. Diesel d. Solar

13. If an equipment bonding jumper is run external to a raceway, it must be less than _______ feet.A. 6B. 2C. 4D. 5

On site plans, all evevations are referenced from_. A. The centerline of a street B. Ground level C. A bench mark D. A test boring

Raceway fill calculations are a prerequisite in ____ needed for particular circuits. Select one: A. MATERIAL REQUIREMENTS B. SCHEMATIC REQUIREMENTS C. DETERMINING THE SIZE OF RACEWAY D. CIRCUIT LOADS

Electrical plants Define the terms "Main column ." " Line ." " Protection earth " and " Operating earth

QUESTION 9 When a ground wire is connected to an interior gas piping system and the underground portion of the gas pipe into the building is plastic, which of the following is (or are) true? a   A.This would be approved by code as the gas pipe is only being bonded to the electrical system. b   B.This installation would be approved by code, as the gas pipe is not a grounding electrode. c   C.Both A and B d   D.Neither A nor B

Trouble shooting is the systematic _____________________________ of the various ______________ of a system or process to _________________ a __________________________________ part.

Suppose the current in this circuit is I = -35 A. The voltage drop across each circuit element is as given in the table below. From this information, determine, for each of these circuit elements, (i) whether an active or passive sign convention is being used for that element, (ii) whether that element is absorbing or producing a net (positive) amount of electrical power. In each answer box within the table below, type the correct choice from among the bold-faced words above. - A A B C A + с B + V₂ Circuit element Voltage drop Sign convention? Absorbing or producing net electrical power? -5 V -6 V 1 V -

1. A14/2 type copper used for a general lighting branch circuit.                                                Ampacity:______________              Maximum Fuse or Circuit Breakers Sizes:________________      2.Three 8 AWG copper conductors with THHN insulation Installed in garage in electrical metallic tubing (EMT). The ambient temperature in the garage can reach as high as 110'F. All termination points for this circuit are rated 60'C.                            Ampacity:______________                  Maximum Fuse or Circuit Breakers Sizes:________________ 3.Four 4 AWG copper conductor with THWN insulation imstalled in EMT in a basement. All termination points are rated at 60'C.                                 Ampacity:______________                  Maximum Fuse or Circuit Breakers Sizes:________________  4. An 8/3 Type UF copper cable installed underground from a house to a detached garage to feed a 120/240-volt subpanel. All termination points are rated at 60'C.…