What is the difference between Analog Multimeter and Digital Multimeter?

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Multimeter is an electronic measuring instrument that includes various measurements in one unit. There are two sorts of multimeter that analyse and display the measurements. One is Analog Multimeter and the other is Digital Multimeter.

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ANALOG MULTIMETER DIGITAL MULTIMETER
It uses a moving needle and a dial to display information. It shows information in numbers.
It has small meter screen which is difficult to interpret. LED display screen makes the number clear.
Non-linear movement can produce error. Alphanumerical format demolish ambiguity.
It displays value of one input signal. It can accept multiple input signals and has adjustable or bar graph displays that allows users to switch between the inputs.
Its measurement range is limited. It has a better range of measurement.
Only display single input signal and offer no other features. It offers different features like capacitance, frequency, sound level measurement, temperature.
Calibrated manually. Calibrated automatically.
It is less costly. It is expensive.

Why to use cable gland?

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Glands

 

A cable gland is an accessory used to fasten/tighten/secure the cable termination to an electrical panel or electrical equiment. These cable glands are made of brass and also nylon PVC compounds. Cable glands are used in all types of cables like telecommunication cables, data cables, power & control cables and instrumentation cables. Gland sizes vary with the cable size (cable diameter).

There are three main types of cable gland:

  • PG Glands: PG Glands or Plastic Glands are used in light duty low current applications.

PG Gland (2)

Comet Single Compression Gland (2)

  • Double Compression Glands: These glands are used with heavier cables and/or in controlled environments. These glands, on tightening, compress the outer as well as inner sheath of the cable an makes them weatherproof

Comet Double Compression Gland

What is a Multimeter and how to use it?

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2010122606520726231_130329986

 

Multimeter is an essential electrical tool to measure voltage/current/resistance of electrical components and circuits.  Before discussing the use of a Multimeter, let’s discuss its definition.

In the early 1800’s, galvanometer was used to measure the resistance and voltage. Then in 1920’s Multimeter was invented by Donald Macadie, .to measure ampere, volt and ohm of an electronic component.

Use of a multimeter

Multimeter is used to measure:

  1. Voltage, alternative and direct, in volts.
  2. Current in amperes, both alternating and direct.
  3. Resistance in ohms.

Some multimeters can also measure: –

  1. Frequency in hertz
  2. Temperature in Celcius and Fahrenheit degree.
  3. Capacitance in farads.

How to use Multimeter?

Multimeter comprises of three parts:-

  1. Display (These days mainly 4 digit LCD display)
  2. Selection Knob – it allows the user to set the multimeter to read either volt or ampere or ohm.
  3. Port – there are two ports in a multimeter
    1. COM – A probe is plugged in it to connect to the ground or circuit. Usually ithe probe is black in colour.
    2. mAVΩ – A probe is plugged in this port to measure current, voltage and resistance. Commonly the probe is red in colour.
    3. 10A – It is used to measure high currents.

 

PLIERS and its usage

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Pliers are a very important electrician tool. Its origin can be traced to the Bronze Age.

In today’s world, pliers have significance in all manual tasks including bending, compressing, cutting, etc. Pliers are available for different applications and the types include combination plier, long nose pliers, round nose pliers, slip joint pliers.

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Combination Pliers or Linesman Pliers are mainly used by electricians to grip, twist, bent and cut a wire or cable. The grip of these pliers is insulated to protect from electrical shock.

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Long Nose Pliers or Needle Nose Pliers are used for cutting and holding. This plier is used by artists, goldsmiths, electricians, network engineers to bend, re-position or cut wires. Because of long nose these types of pliers can reach cavities, where human finger cannot reach

 

Induction Cooktop for Modular Kitchen

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Induction Cooktop

Induction cooking heats a vessel by electrical stimulation, instead of a flame. The cooking vessel must be made of or contain ferromagnetic metal like cast iron or stainless steel. Copper, glass and aluminum vessels cannot be used.

In an induction cooker, a coil of copper wire is placed under the cooking surface and an alternating electric current is passed through it. The vacillating magnetic field tempts a magnetic flux, producing a current in the ferrous pot that is placed on top of the surface. This current flowing through the metallic pot encounters a resistance and hence the pot heats up.

Benefits

  • Faster heating.
  • Precise control and heating performance similar to gas but more energy-efficient.
  • Easy to clean due to flat and smooth surface.
  • Heat neither burns the food nor makes it sticky, contrary to flame based cooking.

Limitations

  • Cookware must be compatible with induction heating.
  • Cookware must have a flat bottom.
  • Induction cookers usually have glass ceramic tops that have higher changes of getting damaged.
  • Cooker surface can get scratched by sliding pans across its surface.
  • Minor noise is generated by the internal cooling fan.

Do you know the difference between Gas-Cooktop and Induction Cooktop?

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download INDUCTION-COOK5

 

GAS COOKTOP INDUCTION COOKTOP
Instant on-off heat Takes time to heat
Open flames allow humid cooking Allows dry cooking
Have to be cautious while cooking as base is not even. Flat base reduces risk factor.
Gas leakage can lead to serious accident. Lower risk; but as with all electrical appliances care has to be maintained
Not easier to clean the oven. Easier to clean.
Conventional look Designer look
Natural gas is cheaper Expensive in comparison to Gas.

 

Though both are easy to use; however its always essential to be cautious while cooking, using any of the above.

Do you know the difference between VGA and HDMI CABLE?

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HDMI & VGA Cable

VGA is an analog standard for video signal transmission, developed by IBM. It can accommodate only a single video signal. VGA is a very popular format used in computer displays.

HDMI is a newer and digital transmission standard; created by a coalition of leading consumer electronic manufacturers.  The major difference is that it can carry multiple digital audio channels besides video signal. Today HDMI has become a standard interface in all leading consumer electronic items like TVs, DVD Players, Audio Systems as well as Personal Computers/Notebooks and offers seamless connectivity and signal transfer between devices.

Use of Energy Meter

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Energy Meters

An energy meter is a device that measures electricity (KWH) consumed at our home of office or factory.

Electricity Supply companies (Like BSES, NDPL in Delhi) use electric meters installed at customer premises to measure electricity consumption for billing purposes. This consumption is measured in KWH i.e. one kilowatt load running for an hour.  A typical example to understand is if a 1000W Geyser is ON for 1 hour, then it results in 1 unit energy consumption.

Some of the leading energy metering companies of India include Secure Meters Ltd and HPL Limited.