EE objectives

• Fuse wire is manufactured from copper

Fleming’s Left-Hand Rule

• The thumb indicates the direction of force on a conductor

Net Reactance in Series RLC Circuit

• Net reactance equals XL - XC

Parallel Resistors

• If two resistors are in parallel, with R1 = 2R2, and the current in R1 is I, the current in R2 is 2I

Ampere-Hour Capacity

• Ampere-hour capacity relies on the area of the plates

Ohm’s Law

• Ohm's Law requires the ratio V/I which must remain constant

Network Theorem

• When transforming an electrical network with multiple voltage sources into an equivalent network with a single voltage source, considering the short circuit current and parallel internal resistance, the resulting illustration represents Norton’s Theorem

Three-Phase Unbalanced Load

• A three-phase unbalanced load has a power factor that may be different for each phase

Cellular Phone Frequency

• Cellular phones operate in the UHF range

Voltage Drop Limits

• Maximum allowable voltage drop for lighting circuits is 3%
• The maximum allowable voltage drop for feeders is 5%

Fiber Optics

• Fiber optics operates on the principle of reflection

Grounding Wire Color

• Green is reserved for grounding equipment wire

Lightning Protection

• Overhead lines are protected from lightning using overhead ground conductors and surge arresters

Synchroscope Use

• A synchroscope measures the phase relationship between current and voltage

DC Motor Armature Current

• The current flowing in the armature conductors of a DC motor includes AC components as well as DC components

DC Motor Armature Current Proportionality

• The armature current drawn by any DC motor relies on the torque speed

Fault Level

• Fault level refers to fault MVA (Mega Volt Amperes)

Alternator Behavior

• With a constant input to the prime mover of an alternator, as excitation increases, KVA will be leading

Electroplating Electrodes

• In electroplating, the positive electrode is called the anode

Silicon Diode Barrier Potential

• The barrier potential of a silicon diode is 0.7V

Active Circuit Elements

• An ideal current source is an active element in a circuit

RMS Value Waveforms

• Full wave rectified sine wave has the minimum RMS value if they have the same peak value of voltage

Synchronous Motor Operation

• The minimum armature current in a synchronous motor corresponds with unity power factor

DC Generators

• Lap winding is best suited for high current and low voltage DC generators

Vacuum Permittivity

• The relative permittivity of vacuum is unity

Coil Inductance

• Tripling the number of turns of a coil causes the inductance to become 9 times as large

DC Shunt Motor Resistance

• Adding an external resistance in series with the field of a DC shunt motor reduces the armature current drawn by the motor

Arc Dispersion

• System power factor change is NOT a valid method of arc dispersion

Load Shedding

• Switching off some loads is a method for load shedding

Series RC Circuit

• The capacitor in a series RC circuit acts as an open circuit at steady state

Fault Current Components

• Symmetrical faults lacks a zero sequence component

Ergs/Sec to KW

• 10^13 ergs/sec equals 1000 kW

Salient Pole Synchronous Motor

• Disconnecting the excitation of an unloaded salient pole synchronous motor causes it to run at a lower speed

Voltmeter Sensitivity

• Sensitivity of a voltmeter measures in Ohms/volt

DC Armature Windings

• A DC armature winding where the coil sides are placed a pole apart is a full-pitch winding

One kWhr Equivalents

• One kWhr equals 3413 BTU

Philippine Wiring Standards

• The Philippine Electrical Code serves as the basis for electrical wiring standards in the Philippines

Receptacle Outlets in Dwellings

• Dwelling units need at least one receptacle outlet hall ways three meters long

Grounding Electrodes

• When installing two grounding electrodes, the minimum distance between them should be 1500 mm

Lamp Illumination

• In a scenario where light source maintains initial illumination of 800 lux across screen, and that distance from the screen is doubled, new illumination becomes 200 lux

Wire Resistance

• Doubling the wire length doubles the wire resistance, with all other factors constant

EPIRA Law

• RA 9136 is intended for total electrification

Philippine Distribution Code

• Collecting Efficiency NOT included

BTU and Gcal

• 7.1 x 10^10 BTU is 17.892 Gcal

Circuits and Sparking

• High inductance causes sparking

Slip Ring Material

• Slip rings consist of copper

Carbon Brushes

• Carbon brushes have less arcing

DC motor power

• Developed power that is maximized will be unity

Motor Windings

• Motor windings are located in the stator

Synchronous Motor Losses

• The motor input meets the synchronos motor losses

Conductor valence electrons

• The valence electron is substance is the conductor

Series RLC Circuits

• Increasing capacitance will decrease the frequency by 50%

EMF Induction

• Stationary conductor and changing magnetic field equals dynamical induction

Electric Current

• The electric current is equivalent to an Ampere per sec

Fault Level

• The fault level will be a factor of power

Load Factors

• The base load factor does not have 100% load factor

Electric Current Value

• Electric potentially lethal current is 1mA

Unit of Elastance

• The unit of elastance is the daraf

Magnetic Fields

• Magnetic field originates by moving electric changes

Positive Electric Charge

• Ions have positive electric charge

Induction Motors

• The induction motor is analogous due to two factors being short-circuited

Bridge Rectifiers

• If the line frequency will increase 60Hz the full wave bridge rectifier is 120Hz

Side Effects

• The heating effect has undesirable side effects which include electric over

Relative value - kWhr

• One kWhr is 3413 BTU

Phasor Angles

• Increased series RC value of phase angles will decrease

Unbalance Loads

• 4-Wire wye connections will connect unbalance loads

Find the horizontal bundle

• Find the horizontal will be 1.6699r

Power output

• The condition of the DC-motor power output is that voltage=v/2

Per-phase

• Impedance of the balance will be 31/3

Nuclear reactors

• Nuclear reactors will only employ fusion

Potential difference

• Circuits are different from the apply voltage

Primary advantage

• Noise immunity is a primary advantage

IIEE Number

• With the no. 21 will be distance from delta

Parallel Resistance

• Two resistors that are twice from each other the R1 current is 12 ohms

Communication

• With basic communication there will be a transmission

Conduction

• When altering from power of current when it is producing from the current that produces that has a rating

Electronics

• Simplex electronics is where the party transmit at time

Wattmeters

• Unbalanced and balanced load is for using power that will have a 3-phasing

Defined and measured

• Specific resistance defined by measured

Collector

• Reliability system must have a collector and distribution

Resistance phasor series

• The result for the capacitance series points to the left

Impedance react

• The phase angles will react from capacitance to reactance

Synchronous value

• The synchronous rated value will be zero

Difference measurement

• A differential measure from electrical quantities

Parallels measurements

• Equivalent impedance may have share measurements

Transformer

• An ideal transformer has no permeability

Distributers

• The distributers will establish penalties