Network Cabling Guide: Types, Categories, and Connectors

Posted by on May 15, 2024 in Technology | 0 comments

How to Generate a Null Modem

To create a null modem cable, you need to connect the following pins between connector A and connector B:

  • Pin 3 of connector A to pin 2 of connector B
  • Pin 2 of connector A to pin 3 of connector B
  • Pin 5 of connector A to pin 5 of connector B

Bypass pins 4, 6, and 1 on both connector A and connector B. Also, bypass pins 7 and 8 on both connectors.

Types of Transmission Media

Guided Media:

  • Twisted Pair
  • Coaxial
  • Fiber Optic

Unguided Media:

  • Radio Links
  • Satellites

Difference Between UTP

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Outdoor Lighting Installation Guide

Posted by on May 14, 2024 in Technology | 0 comments

Maximum Permissible Intensities

The maximum intensities permissible are:

  • 16 In ……………………… 75 A
  • 25 When ……………………… 100 A
  • 50 At ……………………… 150 A
  • 95 When ……………………… 230 A
  • 150 By ……………………… 305 A

Height Supports Effort (kg)

  • Wood (Class III) 9 10 460
  • Wood (Class V) in November 1213 845
  • Concrete “September 11, 1913 250, 400, 630, 800 and 1000
  • Concrete “Celosia 1214 1000 and 2000”

Overhead Line Protection

For adequate protection of

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Internal Circuits and Electrical Installations in Residential Buildings

Posted by on May 14, 2024 in Technology | 0 comments

INTERNAL CIRCUITS

Protector Overview

Private protection circuits are implemented in accordance with the ITC-BT-17 and contain at least:

  • An automatic cut-off switch with manual omnipolar of minimum rated current of 25 A and protection devices against overloads and short circuits. The power switch is independent of the switch for power control (PCI) and cannot be replaced by it.
  • One or more switches that ensure protection against indirect contact of all circuits with a differential-residual intensity
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English for Construction Engineering: A Study Guide

Posted by on May 14, 2024 in Technology | 0 comments

1º PARCIAL. INGLES I RECUPERACIÓN. INGENIERÍA DE EDIFICACIÓN

WE PRODUCE 5000 UNITS A MONTH. ONLY A VERY SMALL NUMBER ARE REJECTED.

THE FIRST REAL ROAD WAS BUILT BY THE ROMANS.

The first television pictures were produced in 1926 by John Logie Baird.

A free ride to town was given to me by a taxi driver.

I AM LOOKING AFTER SOME CHILDREN, WHO ARE TERRIBLY SPOILT.

ROMEO AND JULIET, WHOSE PARENTS HATED EACH OTHER, WERE LOVERS.

WE CHANGED TO GAS ENERGY.

THE CROSS-SECTION OF A BRICK IS RECTANGULAR IN SHAPE.

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Letters, Enquires and Replies, Complain Letters, Job Applications, Car Assembly, Tunnel Drill, Weight and Dimensions Limits, Road-Ready Plane

Posted by on May 13, 2024 in Technology | 0 comments

Letters

Remitente(envia)(dirección)

Recibe la carta(direccion)

For the attention of the …………

dear sir or madam—-yours faithfully……dear mr,ms,mrs,miss—-yours sincerrelly

Enquires and replies

For the attention of the ……..

Dear sir or madam

We are a programers or software based in Bolton and are currently developing an analyst program based for machine language for use in stadistic company.we are interested in protecting the programs we sell from unauthorized copying and duplication and

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Low Voltage Electrical Installations: A Comprehensive Guide

Posted by on May 13, 2024 in Technology | 0 comments

ITC.36: Facilities at Very Low Tensions

For the purposes of this instruction, three types of low voltage installations are considered: Security Extra Low Voltage (SELV), Protective Extra Low Voltage (PELV), and Low Voltage Functional (MBTF).

Safety Low Voltage

50 V AC or 75 V DC

2.1. Power

  • A safety isolating transformer according to UNE-EN 60,742.
  • A current source to ensure a degree of protection equivalent to that of the previous safety transformer.
  • An electrochemical source (batteries).
  • Other sources
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