PHYS_2&12_Lab 2_LabSheets

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

1.  A quantity defined as amount of work done over time. _____________ 2. Types of material that has 4 valence electrons. _____________ 3. One Coulomb is equal to ____________ electrons or protons stored in a dielectric. 4. Best conductor material type.  _____________ 5. Best insulator material type. _____________ 6. The value of a resistor without considering its tolerance value percentages. _____________ 7. 1 picoampere (pA) is equal to __________ ampere (A).

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

___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.

Fill in the blank The resistance of a wire is 126.48 ohms at 1000C  and 100 ohms at 300C. The temperature coefficient of this wire at 00C is ____________ per C0.

KVLLoop abfea: __________________________________________________Loop cdhgc: __________________________________________________Loop bcgfb: ___________________________________________________

An LED is a solid-state device. When connected to a dc source, the _________ in the LED __________ together, creating __________.

The resistance of a wire is 126.48 ohms at 1000C  and 100 ohms at 300C. The temperature coefficient of this wire at 00C is ____________per C0.

Which of the following statements about equipment grounding conductors (EGCS) is true? A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor. B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray. C. No current should be present in the EGC during normal operation. D. EGCs are required to be decreased in size to address voltage drop.

Which of the following statements about equipment grounding conductors (EGCs) is true?A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor.B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray.C. No current should be present in the EGC during normal operation.D. EGCs are required to be decreased in size to address voltage drop.

1. The practical unit of electric charge. ____________ 2. A path for the current to flow. ______________ 3. DC Voltage has ________ polarity 4. Resistance to current flow in AC circuits, measured in ohms. ____________ 5-7. Types of grounds in electrical/electronics circuits. (5) ______________ (6) ______________ (7) ______________ 8. Also known as Ohm’s Law. ________________

QUESTION 3 We are running 3 wires and a ground in a RMC to a control panel with a 60 amp circuit breaker disconnect in the control panel. The conduit is run along the ceiling where the ambient air temperature is 100 degrees. The control panel feeds our secondary cooling pump. What size are the ungrounded conductors? All conductors have typeTHHN insulation.

A cable wire maybe coaxial or twisted. Coaxial costs 25 centavos per meter while twisted wire costs only 18 centavos.   The soldering cost for coaxial wire is P1.30 per connection, for twisted wire P1.70.  What length of cable run will make the cost of installing coaxial equal to that of the twisted wire.  Assume that the number of soldered connection is 350. ANSWER_____________m

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

V4

Two 12-2 AWG and two 14-2 AWG nonmetallic-sheathed cables enter a box. Each cable has an equipment grounding conductor. The 12 AWG conductors are connected to a receptacle. Two of the 14 AWG conductors are connected to a toggle switch. The other two 14 AWG conductors are spliced together because they serve as a switch loop. The box contains two cable clamps. Calculate the minimum cubic-inch volume required for the box.

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.…

Estimate the length of conduit to perform the next bends. EMT will be bend using a hand bender. Provide your answer in inches (just the number) using up to 2 decimals. The picture shows two panels connected by a back-to-back 23.5" stubs EMT 3/4" 6.25 ft P

What follows is a numeric fill in the blank question with 3 blanks. Figure 1 shows the three phases V-t graph in Turkey. Please write the indicated values with their units in boxes and Voltage - time function of each phase in table below. Please write the units in the second box. 1= _______________ V 2=  ________________ms 3=  _______________ms

A cable one mile long and 0.50 inches in diameter is composed of a steel core 0.25 inches in diameter and the outside shell is aluminum. The resistance of the cable is _____ is Ps and Pa 57.4 and 17.5-ohm Cmil/ft, respectively Choices: a.) 0.447 ohm           c.) 0.625 ohm b.) 0.893 ohm           d.) 5.3 ohms

With a neat diagram indicating all the parts, explain the working of the nuclear power plant. (Any four important points).

iF AN AMMETER WAS CONNECTED BETWEEN SWITCH1 AND POTENTIOMETER R1, HOW MUCH CURRENT WOULD IT INDICATE AT E(min) and E(max) IE(min)=__________________________mAdc IE(max)=__________________________mAdc

An isolator is used to: Select one: a. To be mounted on towers for insulation purpose b. All of the above c. to disconnect part of the system for maintenance from live circuit d. Insulate the wires to avoid electrocution and short circuits Clear my choice

With a neat diagram indicating all the parts, explain the working of the nuclear power plant. (Any tour points).