Electronics and Electrical Engineering Review Flashcards

A set of vocabulary flashcards covering key concepts, problem solutions, laws, and definitions from electronics and electrical engineering review material.

Direction of Magnetic Field East of an Upward Straight Conductor

Points towards the North according to the right-hand rule.

Rectangular Garden Expansion Problem

A problem where a garden measuring $20\,\text{feet}$ by $24\,\text{feet}$ is expanded equally on each side to increase the total area by $141\,\text{square feet}$, resulting in a new length of $27\,\text{feet}$.

Main Cause of Transformer Hysteresis Loss

Reversal of magnetization within the transformer core.

Maximum Fine for Unauthorized Practice of Electronics Engineering

$1\,\text{million}$ pesos under RA $9292$.

Significant Power Supply Voltage Ripples

Large fluctuations in DC power supply output observed on an oscilloscope, caused by a damaged or insufficient filter capacitor.

Smartphone Touch Screen Detection Principle

Capacitance change caused by input touch.

Renewal Period for ECE or ECT PRC License

Every $3\,\text{years}$ under RA $9292$.

Distorted Sound in Audio Output

Audio distortion occurring even at low volume, pointing to a faulty output amplifier.

Motor Frequent Stalling Under Normal Load

A condition most likely caused by an undersized motor or overload.

Minimum Vertical Cable Clearance Over Non-Pedestrian Roofs

$1\,\text{m}$ or $3\,\text{ft}$ clearance required for installation over roofs not accessible to pedestrians.

RF Maintenance for Signal Flow

Cleaning RF connectors and shielding areas to ensure good signal flow in high-frequency communication equipment.

Unbaked Water-Cleaned Stator Windings Failure

Insulation breakdown occurring upon restart when an electric motor's stator-windings are cleaned with water but not baked.

Alternator Field System Location

Placed on the rotor.

Fix for Overly Sensitive Capacitive Touch Sensor

Add shielding or recalibrate the sensitivity.

Most Common Multimeter Internal Failure

Blown fuse resulting from measuring incorrect current.

Non-Requirement for Electronics Engineering Licensure

Five years of experience as an ECT is NOT required to apply for the Electronics Engineering examination/license.

Immediate Repeated Fuse Blow

Occurs when a newly replaced $10\,\text{A}$ fuse blows instantly upon applying power, indicating a short circuit.

Electrolytic Capacitor Failure Symptoms

Bulging or leaking top.

Frequent Transformer Relay Tripping During Switching

Caused by high inrush current.

Ampacity of #14 AWG Copper Wire

$20\,\text{A}$ according to the Philippine Electrical Code for residential branch circuits.

DC Compound Generator

The type of generator least affected by changes in load.

Equation $6(6x + 1) - 3(x - 1) = 108$

An algebraic equation where six times the quantity $6x + 1$ minus three times the quantity $x - 1$ equals $108$, yielding $x = 3$.

Hot Branch Circuit Wires at 80% Fuse Rating

Indicates that the wire size is too small for the circuit.

Insulation Resistance Test

A test used to evaluate the condition of motor windings and detect moisture ingress.

Defective Exciter Diodes

The most likely reason for reduced output voltage in a brushless AC generator.

Dial Indicator

The tool best suited to check motor shaft alignment during repair.

Predictive Maintenance

A maintenance approach using historical data and trends to plan interventions before failure.

Network Switch Link Lights On without Internet Access

A network issue most likely caused by a problematic downstream router.

Resistor Measuring 0.5 Ohms instead of 100 Ohms

An out-of-circuit reading indicating that the resistor should be checked for an internal short.

DC System Conductor Color Coding

Red for positive conductors and Black for negative conductors.

Power Station Generator Type

Alternator or synchronous generator.

Voltage Per Turn in a Transformer

Same in both primary and secondary windings.

PRC Disciplinary Action for Malpractice

Revocation or suspension of license under RA $9292$.

Human Electric Shock Perception Threshold

$1\,\text{mA} - 5\,\text{mA}$ current level where a human typically starts to feel an electric shock.

Maximum OCPD Rating for 2.0 mm Copper Conductor

$20\,\text{A}$ maximum rating for an Overcurrent Protective Device (breaker/fuse) protecting a $2.0\,\text{mm}$ copper conductor.

Leaky Gate Symptom in a MOSFET

The gate draws significant current during operation.

Unstable Power Supply Output Voltage After Repair

A condition following switching power supply repair requiring immediate checking of feedback loop components.

Core Losses with Increased Input Frequency

Changes that occur to core losses when input frequency to a transformer increases.

DC Generator External Circuit Contact Parts

Brushless and commutator parts in contact to deliver current to the external circuit.

Zero Voltage Regulation Condition in a Transformer

Condition caused by a leading power factor load.

Transformer No-Load Dominant Component

The magnetizing branch of the transformer equivalent circuit.

Grease-Lubricated Bearing Service Interval

Every $6-12\,\text{months}$ for continuous-duty motors.

Class-D Amplifier Low-Pass Filter Function

To smooth the PWM waveform in output audio.

MOSFET ESD Susceptibility Cause

Higher vulnerability to electrostatic discharge because their gate is insulated by a thin oxide layer.

Lorentz Force

The fundamental principle on which electric motors operate.

RA 9292 Board Member Practice Requirement

Active practice in the electronics engineering profession for at least $10\,\text{years}$ prior to appointment.

Cylinder Volume Scaling Rule

Doubling the radius and tripling the height of a right cylinder multiplies its volume by $12$.

Clamp Ammeter

The tool to use next when a motor intermittently stops while its terminal voltage remains steady during operation.

Center of Curve $x^2 + y^2 - 2x - 4y - 31 = 0$

The center point coordinates $(1, 2)$.

Distance from Point $(2, 1)$ to Line $4x - 3y + 5 = 0$

A perpendicular distance calculated as $2$.