Notes, abstracts, papers, exams and problems of Technology

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Ccna3

Classified in Technology

Written at on English with a size of 16.01 KB.

1. Refer to the exhibit. The network administrator needs to setup Switch1 for remote access from HostA. Theshow ip interface brief is issued on Router1 and the show interfaces trunk command is issued on theSwitch1 to verify the current status. The administrator applies the additional configuration shown in theexhibit to Switch1. However, the telnet from HostA fails. What additional commands need to be appliedto the switch?
Switch(config)# interface vlan 10
Switch(config-if)# ip address 10.1.1.250 255.255.255.0
Switch(config-if)# no shutdown
Switch(config-if)# ip default-gateway 10.1.10.254

2. Refer to the exhibit. On the basis of the configuration shown, how will an Ethernet frame on port GigabitEthernet0/1 be modified?
802.1Q encapsulation inserts

... Continue reading "Ccna3" »

El loco

Classified in Technology

Written at on English with a size of 1.26 KB.

Electric power is the capacity of an electric receiver to transform energy into a fixed period of time.

An electromagnetic mechanism is any appliance that can use electromagnetic effects to produce electricity or convert it into mechanical energy.

Electromagnetic generators transform mechanical energy into electricity, are two types:dynamos and alternators.

The direct current is when the electrons always flow in the same direction and with a steady current.

The Alternating current when the positive and the negative terminals are constantly changing. Also the electrons don`t circulate with the same level of current.

The equivalent value of an alternating electric current is the value that a direct current should have to produce the same energy effect.... Continue reading "El loco" »

The component that transforms the hydraulic pressure into a linear motion

Classified in Technology

Written at on English with a size of 7.38 KB.

  • To be classified as Aerial Device: Must reach at least  65ft above grade
  • Quint(50–75): Size of Tank&Pump - Supply/Attk HL - Laddrs & Ww
  • Water Tower(50–130): Below Horiz to 90° & flows 1000gpm
  • Articulating Aerial Pltfm(55–85): Boom Sections w/hinge. Up & Over
  • Aerial Ladder App(50–135): Most Common /WH: Ground to highest rung
  • Combo Telescoping/Articulating Aerial Device (90 – 174)
  • Aerial Ladder Pltfm(85–110): Straight-Chassis 3-axle,rear-mounted type
  • *WH: Ground to top of Railing @ Max Ext & Elev.
  • Telescoping Aerial Pltfm(75–100):2/more sections Box-Beam/Tube Truss
  • Requirements of all Pltms: Floor 14ft² - 4” high kickplate
  • Railing no more than 24” opening - 2 gates below top railing
  • Fog Curtain Nzl underneath: 75gpm
... Continue reading "The component that transforms the hydraulic pressure into a linear motion" »

Simple machines

Classified in Technology

Written at on English with a size of 5.46 KB.

all machines have in common:

- involve a kind of motion.

- involve a kind of force.

- make a job easier to do.

- need some kind of input to make them work.

- produce some kind of output.

basic kinds of motion

- rotary: going round and round

- oscillating: swinging backwards and forwards.

- linear: in a straight line

- reciprocating: backwards and forwards in a straight line.

A machine is a device that helps make work easier to perform.

MECHANICAL ADVANTAGE: when a machine takes a small input force and increases the magnitude of the output force, a mechanical advantage has been produced.

CONSERVATION OF ENERGY: no machine can produce more work than the amount of work that is put into the machine.

THREE(SIX) SIMPLE MACHINES: lever, wheel and... Continue reading "Simple machines" »

Descripciones de maquinas simples

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Written at on English with a size of 1.4 KB.

Lever: A straighboard on a point know os a fulcrum,hammer. Gears: Two toothed wheels fit togother either directly or though a chain, bicycle. Inclined plane: Can be used to alter the effor distance involved in doing work, such as lifting load, Wedge,screw. Wedge: Two inclined planes joined back to back. Are used to split things, kniffe. Screw: inclined plane allows the screw to move itself or to move forward or backward an object or material it when rotated, bolt. Pulley: A wheel that usually has a groove around the outside edge, crane, flag pole. Wheel and axle: Has a larger wheel connected by a smaller cylinder and is fastened to the wheel so that they turn together, Motorbike.

Tecnoclaralasolana.blogspot.com

Classified in Technology

Written at on English with a size of 2.03 KB.

Atoms are the basis for everything in the Universe. The protons and neutrons are always in the centre of the atom. Scientists call the centre of the atom nucleus. The electrons are always found whizzing around the nucleus.

There are two types of electrical charge:positive and negative. Opposite charges attract.Like charges repel.

Electricity is lows powers mosth things around us. Electricity is like water in the way it works. Water flows through rivers and pipes and will stop if it cannot pass.



Electricity is the same, it flows around the ciruit from one end of the battery to the other, if there is a gap there will not be a complete circuit.

A complete ciruit is when all the components and cells are set up correctly to allow for electricity to... Continue reading "Tecnoclaralasolana.blogspot.com" »

Motors: Types, characteristics and performance

Classified in Technology

Written at on English with a size of 133.97 KB.

CONTENTS
1 Four-stroke engines OTTO AND DIESEL ... ... ... ... 3

1 HISTORY OF MOTOR ... ... ... ... ... ... ... ... ... ... ... ... ... .... ... ... ... ... ... .. 3
2 THE HEAT OF INTERNAL COMBUSTION ENGINE ... ... ... ... .. 5
3 CLASSIFICATION OF ENGINES
INTERNAL COMBUSTION ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 5

2 THE FOUR STROKE ENGINE OTTO ... ... ... ... ... ... ... ... ... 13
1 Characteristics of OTTO ENGINE ... ... ... ... ... ... ... ... ... .... 13
OTTO ENGINE 2 Formation ... ... ... ... ... ... ... .... ... ... ... .. 15
3 CYCLE OF THEORETICAL OTTO ENGINE
FOUR TIMES ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. ... ... ... ... ... ... ... 29
4 OTTO CYCLE ENGINE OF PRACTICE... Continue reading "Motors: Types, characteristics and performance" »

Codec Fire Alarms

Classified in Technology

Written at on English with a size of 4.86 KB.

13.8.10.6.2- Wiring installation shall meet the following requirements:
13.8.10.6.2.1- All conductors shall be minimum #16 gauge solid copper, type thhn, thwn or tfn. All wiring shall be run continously from device to device.
13.8.10.6.2.2- The minimum separation between the outgoing and return circuits shall be a minimum of one foot vertically and four feet horizontally in accordance with the provisions of NFPA- 72 6.4.2.2.2.
13.8.10.6.2.3- A cable-cutting tool with controlled depth of cut shaqll be used in all MC cable installations.
13.8.10.6.2.4- UL listed type MC cable connectors with insulated bushings and screw type cable attachments shall be used in all MC cable instalations. Connectors shall be steel, not the cast type.
13.8.10.6.2.5- Conductor
... Continue reading "Codec Fire Alarms" »

Centos 5.5

Classified in Technology

Written at on English with a size of 5.39 KB.

#useradd nombredeusuario :: para crear usuarios

#passwd :: nombredelusuario

#groupadd :: nombredelgrupo :: (forma normal)

#groupadd -g 600 nombredelgrupo :: (guid sobre 650)

#userdel nombredelusuario :: para deletear usuarios

#groupdelnombredelgrupo :: borrar el grupo

#usermod -G nombredelgrupo nombredeusuario :: para asignar usuario a grupo.

opcion 2: editar archivo /etc/group -> grupo:x:600:usuarioqueseagregara

#nano /etc/shadow :: para poder ver los usuarios y poder bloquearlos

#passwd -l nombredeusuario :: para bloquear usuario

#passwd -u nombredeusuario :: para desbloquear usuario

#sudo passwd :: para cambiar la contraseña de root

# tail /etc/passwd :: paraver informacion de usuarios

#su nombredelotrousuario :: para iniciar sesion como el usuario... Continue reading "Centos 5.5" »

Transmission of motion

Classified in Technology

Written at on English with a size of 5.95 KB.

Machines and mechanisms: A machine is a device capable of reducing the effort required to perform a job. The mechanisms are groups of mechanical elements, each of which performs a specific task on the machine. Simple machine: they have a foothold. Compound Machines: are composed of two or more machines. Fundamental law of simple machines: In a simple machine work done by the driving forces equals the work done by the resisting force. Lever: is a simple machine consisting of a bar rigid which can rotate around a point apoyo.Potencia: force to be aplicar.resistencia: weight you want to apply. Arm strength: the distance between the fulcrum and power. Arm strength: the distance between the fulcrum and the point of resistance. The law of the lever... Continue reading "Transmission of motion" »