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As of 2019, GCM Industry and its affiliated companies have 5 advanced mining machine production bases and one production base under construction, with a total production area of 1,200,000 square meters, which can better meet more needs of global customers in the future.

 

Beginning in 1987, GCM industry has developed steadily and steadily in the field of mining machines, and has gradually formed a complete R&D, production, sales and service system.

Click the links below for detailed information about our areas of expertise and broad range of equipment offerings.

Travelling Wave Tube (TWT) - D&E Notes

Travelling Wave Tube (TWT) The Traveling-wave tube can be used as a medium or high power microwave, amplifier. The TWT, because of its construction and working principle has enormous bandwidths and low noise. The heated cathode at one end of the tube produces a beam of electrons and is attracted to the collector at the other end of the tube.

DC Generator: Construction, Working Principle,Types, and ...

Construction, Working Principle, and Applications The initial electromagnetic generator (Faraday disk) was invented by British scientist namely Michael Faraday in the year 1831. A DC generator is an electrical device used for generating electrical energy .

What is Synchronous Motor | Construction | Working ...

Working Principle: For a simple understanding of the working principle of a synchronous motor, let we take a two-pole synchronous motor as shown in figure 1.1. The input rotor field current If creates a steady-state magnetic field Br and whose poles Nr and Sr.

Construction and working principle of p channel JFET ...

Jun 24, 2020· For 2nd year Electronics I Lecture Sheet : watch the video of Construction and working principle of n channel JFET. https://drive.google.com/file/d/16C-256w4...

Current Transformer (CT) - Construction and Working Principle

Current Transformer Circuit Diagram. A current transformer (CT) basically has a primary coil of one or more turns of heavy cross-sectional area.In some, the bar carrying high current may act as a primary. This is connected in series with the line carrying high current.

Basic construction and working of a DC Generator ...

Working principle of a DC generator: According to Faraday's laws of electromagnetic induction, whenever a conductor is placed in a varying magnetic field (OR a conductor is moved in a magnetic field), an emf (electromotive force) gets induced in the conductor.The magnitude of induced emf can be calculated from the emf equation of dc generator.If the conductor is provided with a closed path ...

Servo Motor : types and working principle explained ...

Nov 06, 2018· Principle of working : Servo motor works on the PWM ( Pulse Width Modulation ) principle, which means its angle of rotation is controlled by the duration of pulse applied to its control PIN. Basically servo motor is made up of DC motor which is controlled by a variable resistor (potentiometer) and some gears.

How a DC motor works? - electricaleasy.com

The same DC machine can be used as a motor or generator. Therefore, theoretically, construction of a DC motor is same as that of a DC generator. Working principle of a DC motor An electric motor is an electrical machine which converts electrical energy into mechanical energy. The basic working principle of a DC motor is: "whenever a current carrying conductor is placed in a magnetic field, it ...

What Is Pitot tube? Construction, Working Principle of ...

Working principle of Pitot tube When a solid body is kept centrally, and stationery in a pipeline with flowing fluid, the velocity of the fluid starts reducing (at the same time the pressure fluid increases due to the conversion of kinetic energy into pressure energy) due to the presence of the body.

PNP Transistor Basics - Construction, Working Principle ...

Sep 07, 2019· Construction. The construction of it is similar to that of N-P-N transistor but here the differences arise in the polarities of the voltages applied. The characteristics tend to differ because here the voltage has been applied in between the terminal base is negative and that of the emitter is positive.

Light Emitting Diode (LED) - Working, Construction and ...

The construction of LED is similar to the normal p-n junction diode except that gallium, phosphorus and arsenic materials are used for construction instead of silicon or germanium materials. In normal p-n junction diodes, silicon is most widely used because it is less sensitive to the temperature. ... Light emitting diode (LED) symbol.

Optical Pyrometer | Construction and Working Principle ...

Jun 12, 2020· The working principle and construction of an Optical Pyrometer are quite simple. We have drawn an experimental model of this type of temperature sensors.It is a measuring instrument that measures temperature of a hot glowing object.. The instrument has an illuminated reference, with which the brightness of that of the hot body is matched by controlling the input electric current of the reference.

Dynamometer Type Wattmeter - Construction and working ...

Mar 18, 2017· Hello friends, in this post we will see construction and working principle & classification of dynamometer type wattmeter. We will also see the advantages and disadvantages of dynamometer type wattmeter. Construction of Dynamometer Type Wattmeter: The following figure shows the dynamometer wattmeter for measuring the power.

CO2 Laser - Principle, Construction And Working ...

Dec 19, 2017· Construction It consists of a quartz tube 5 m long and 2.5 cm in the diameter. This discharge tube is filled with gaseous mixture of CO2(active medium), helium and nitrogen with suitable partial pressures.The terminals of the discharge tubes are connected to a D.C power supply.

Three Phase Induction Motor Construction & Working Principle

Working Principle of Three Phase Induction Motor: Speed of rotating magnetic field: The speed at which the rotating magnetic field revolves is called the synchronous speed (Ns).Referring to Fig. (8.6 (ii)), the time instant 4 represents the completion of one-quarter cycle of alternating current Ix from the time instant 1.During this one-quarter ...

Single Phase Transformer Construction and Working Principle

Home » Electrical Power » Single Phase Transformer Construction and Working Principle. Single Phase Transformer Construction and Working Principle. Want create site? Find Free WordPress Themes and plugins. A transformer (Figure 1) is a magnetically-operated device or machine that can change values of voltage, current, or impedance in a given ...

What is AC Motor - Construction, Working, Types & Applications

Oct 05, 2019· Working Principle of AC Motor It works on the principle of Lorentz force equation I,e whenever a current-carrying conductor is placed in the magnetic field it exhibits some force in it. The working of a normal AC machine with the rotating armature and stationary field winding is …

Unijunction Transistor (UJT) - Construction, Working ...

What is Unijunction Transistor (UJT) UJT stands for UniJunction Transistor.It is a three terminal semiconductor switching device. The Unijunction Transistor is a simple device that consists of a bar of n-type silicon material with a non-rectifying contact at either end (base 1 and base 2), and with a rectifying contact (emitter) alloyed into the bar part way along its length, to form the only ...

Solar Cell: Working Principle & Construction (Diagrams ...

Apr 01, 2020· Working Principle of Solar Cell. When light reaches the p-n junction, the light photons can easily enter in the junction, through very thin p-type layer.The light energy, in the form of photons, supplies sufficient energy to the junction to create a number of electron-hole pairs.

Solar Cell Construction & Working Principle – Electrical ...

What is Contactor : Construction, Types and Applications. ... Working Principle of Contactors. An electromagnetic field is generated whenever current flows where the moving coils attract each other. A large amount of current is drawn initially by an electromagnetic coil. The moving contact is pushed forward by moving core, as a result, the ...

COLORIMETER - Principle, Components, Working ...

The working principle of the colorimeter is based on Beer-Lambert's law which states that the amount of light absorbed by a color solution is directly proportional to the concentration of the solution and the length of a light path through the solution. A ∝ cl. Where, A = Absorbance / Optical density of solution

Construction and working of DC tachogenerator ...

Working. When the rotor is stationary, there is no relative motion between a magnetic field and winding, the output voltage is zero. As the rotor speed increases, the relative motion between a magnetic field and winding also increases and hence the output voltage induced in the winding.

What is an Alternator - Construction, Working & Applications

Sep 28, 2019· The armature core consists of armature windings, slip rings, and brushes.The armature develops armature current when the coil cuts the magnetic flux such that an armature flux is also developed. The slips rings are responsible for the smoother operation between the brushes in order to avoid twisting of the winding.

Venturi Meter–Construction, Working, Equation, Application ...

Construction and specification of venturi meter Venturi is an example for restriction type flow meter.Its work based on Bernoulli's principle.In Venturi, Pressure energy (PE) converted into Kinetic energy (KE) to calculate flow rate (discharge) in a closed pipeline.

Construction and Working Principle of Lamont Boiler - An ...

Construction and Working Principle of Lamont Boiler: Lamont Boiler consists of a Feed pump and it supplies the feed water into the boiler. Generally, the feed pump circulates the water in the economizer of the boiler. Then the Economizer, which increases the temperature of the feed water. Water enters into steam separating drums from economizer ...

Solar Cell Construction & Working Principle – Electrical ...

Mar 23, 2019· Solar Cell Construction & Working Principle. By MS Chaudhry | March 23, 2019. 1 Comment. Solar cell is a device or a structure that converts the solar energy i.e. the energy obtained from the sun, directly into the electrical energy. The basic principle behind the function of solar cell is based on photovoltaic effect.

Carburetor: Construction, Working Principle and Operation

Dec 03, 2019· Now, while most of today's vehicles work on a fuel injection system, the carburetor was the first advancement to revolutionize how the engine in automobiles consumed fuel. Before we look at the principle and operation of the carburetor, let's look for a moment at how an engine burns fuel.