BASIC ELECTRICITY PRESENTED BY: JOHN A NEMETH, PE, CFI PURPOSE - - PowerPoint PPT Presentation

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BASIC ELECTRICITY PRESENTED BY: JOHN A NEMETH, PE, CFI PURPOSE - - PowerPoint PPT Presentation

Nov 22, 2023 319 likes •755 views

BASIC ELECTRICITY PRESENTED BY: JOHN A NEMETH, PE, CFI PURPOSE Develop a working understanding of basic electric: Terms Concepts COMPARING ELECTRICTY TO HYDRAULICS VALVE PUMP TURBINE PUMP TANK WATER PRESSURE PRESSURE WATER FLOW

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SLIDE 1

BASIC ELECTRICITY

PRESENTED BY:

JOHN A NEMETH, PE, CFI

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SLIDE 2

PURPOSE

Develop a working understanding of basic electric:

  • Terms
  • Concepts
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COMPARING ELECTRICTY TO HYDRAULICS

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PUMP

TURBINE

VALVE

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SLIDE 5

PUMP TANK

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WATER PRESSURE PRESSURE

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WATER FLOW FLOW

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ELECTRICAL PRESSURE

PRESSURE

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ELECTRON FLOW FLOW

6.242 X 10

18

ELECTRONS / SECOND

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ELEMENTS OF HYDRAULIC & ELECTRICAL SYSTEMS

HYDRAULIC ELECTRICAL

CONSTANT-PRESSURE PUMP

BATTERY

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ELEMENTS OF HYDRAULIC & ELECTRICAL SYSTEMS

HYDRAULIC ELECTRICAL

WIRE / CONDUCTOR PIPE

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SLIDE 12

ELEMENTS OF HYDRAULIC & ELECTRICAL SYSTEMS

HYDRAULIC ELECTRICAL

DC MOTOR WATER TURBINE

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SLIDE 13

ELEMENTS OF HYDRAULIC & ELECTRICAL SYSTEMS

HYDRAULIC ELECTRICAL

DC VOLT METER

DIFFERENTIAL PRESSURE METER

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SLIDE 14

ELEMENTS OF HYDRAULIC & ELECTRICAL SYSTEMS

HYDRAULIC ELECTRICAL

DC AMMETER FLOW METER

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ELEMENTS OF HYDRAULIC & ELECTRICAL SYSTEMS

HYDRAULIC ELECTRICAL

SWITCH SHUTOFF VALVE

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COMPARING HYDRAULIC PRESSURE TO VOLTAGE

PUMP

PRESSURE GAUGES

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COMPARING HYDRAULIC PRESSURE TO VOLTAGE

BATTERY

VOLT METER

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COMPARING WATER FLOW TO CURRENT

FLOW METER

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DC AMMETER

COMPARING WATER FLOW TO CURRENT

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COMPARING WATER PIPES TO CONDUCTORS

WATER PIPE ELECTRICAL CONDUCTOR

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COMPARING CLOSED HYDRAULIC SYSTEMS TO ELECTRICAL CIRCUITS

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COMPARING CLOSED HYDRAULIC SYSTEMS TO ELECTRICAL CIRCUITS

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COMPARING CLOSED HYDRAULIC SYSTEMS TO ELECTRICAL CIRCUITS

ELECTRICAL SCHEMATIC

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COMPARING HYDRAULIC FRICTION TO ELECTRICAL RESISTANCE

WATER PIPE ELECTRICAL CONDUCTOR

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COMPARING HYDRAULIC FRICTION TO ELECTRICAL RESISTANCE

HEAT HEAT HEAT HEAT

Electrical resistance results in voltage drops but also generates heat

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COMPARING PIPE SIZE TO WIRE GAUGE

SMALL PIPE LARGE PIPE

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COMPARING PIPE SIZE TO WIRE GAUGE

SMALL GAUGE LARGE GAUGE

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COMPARING PIPE SIZE TO WIRE GAUGE

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AMPACITY OF CONDUCTORS

The ampacity of a conductor is: the amount of current a conductor can carry continuously without exceeding its temperature rating

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The ampacity values of a conductor depend on:

  • heating of the conductor by the current
  • ambient temperature
  • temperature rating of its insulation
  • the amount of heat dissipated

AMPACITY OF CONDUCTORS

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  • Aluminum conductors generate more heat that

copper conductors

  • Ampacity of aluminum conductor is less than a

copper conductor

AMPACITY OF CONDUCTORS

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CONDUCTIVITY OF CONDUCTORS

Some conductor materials conduct current with less resistance than do other materials

  • Copper conducts better than aluminum
  • Aluminum conducts better than steel
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CONDUCTIVITY OF CONDUCTORS

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OHM’S LAW

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OHM’S LAW

Ohm’s Law states: the voltage in a circuit is equal to the current multiplied by the resistance, or E = I x R

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OHM’S LAW IN A SIMPLE CIRCUIT

E = I x R Voltage (E) is measured in volts Current (I) is measure in amperes Resistance (R) is measured in ohms

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OHM’S LAW IN A SIMPLE CIRCUIT

Rearranging the terms, we can solve for current if voltage and resistance are known: current = voltage/resistance resistance = voltage/current

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ELECTRICAL POWER

  • The rate at which energy is used is call power
  • The amount of power is expressed in watts (W)

A 100 watt lightbulb produces more light and heat than a 60 watt lightbulb

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OHM’S LAW WHEEL

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OHM’S LAW WHEEL

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APPLYING OHM’S LAW

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APPLYING OHM’S LAW

TOTAL CURRENT CALCULATION

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BASIC ELECTRICITY: SUMMARY

  • Pressure in a water pipe is analogous to

voltage in an energized electrical conductor

  • Flow in a water pipe is analogous to

current in an energized electrical conductor

  • A restriction of flow in a water pipe is

analogous to resistance in an energized electrical conductor