Found 160 Articles for Education

Digital Marketing is the present day career on a boom. It is a way of advertising that provides many ways of online platforms for your product or service, unlike the traditional ways of advertising.To get established yourself as a digital marketing expert, it is always better to get certified. Google AdWords Certification and HubSpot Inbound Certification are the ones which are available for free. You can even try applying them again if you fail to succeed in your initial attempts.Preparing for the HubSpot Inbound Certification enables you to optimize your website and content, helps in making customers as brand promoters ... Read More

A Light bulb generally has a wire connected to it. But this levitating light bulb just hovers in the air above a wooden block and draws power from it. This bulb even rotates if spun. This wooden block is of course connected to the switchboard for power.How Did It Hover?This levitating light bulb makes the look interesting when it just hovers gracefully above the wooden block while it glows. As it is evident from the basic principles of magnetism that like poles repel, the bottom of the bulb contains a magnet and lets it hover on the wooden block which ... Read More

If you are already working, it is always better to go with your company’s preferences and hence get certified through your company’s program. But if want to opt for something else, it’s good to get certified. You can go for Six Sigma black belt certification, once you have completed the green belt certification.Widely RecommendedWhen it comes to doing certifications, the most widely recommended answer is American Society for Quality, in short ASQ. The head office of ASQ is situated at Wisconsin, US. In India, ASQ India has its head office at New Delhi and regional offices at Pune and Chennai.The ... Read More

The Q-point or quiescent point of a transistor is considered during amplification, as this is the point of amplification where the signal is completely amplified without any kind of attenuation. This is located when the transistor is operated in the active region.Locating On A GraphWhen a value for the maximum possible collector current is considered, that point will be present on the Y-axis, which is nothing but the Saturation point. As well, when a value for the maximum possible collector-emitter voltage is considered, that point will be present on the X-axis, which is the Cutoff point.When a line is drawn ... Read More

The dipole antenna is a widely popular antenna that is used mostly for the reception. The dipole antenna is cut and bent for effective radiation. The length of the total wire, which is being used as a dipole, equals half of the wavelength (i.e., l = λ/2). Such an antenna is called as a half-wave dipole antenna, also known as Hertz antenna. This antenna which is mostly used in radio receivers operates is around 3KHz to 300GHz.Construction & Working of Half-Wave DipoleThe edge of the dipole has maximum voltage. This voltage is alternating (AC) in nature. At the positive peak ... Read More

The classification of things while describing and naming them can be understood as Taxonomy. This helps to identify any developmental and experimental work that needs to be done.Simply put, why would anyone mix the shoes in shoe rack with the bed sheets in a cupboard? Taxonomy is our inheritance where we define the places to which they belong. In the same way, it provides an easy to identify the categories of the species so as to have an idea of the existing conditions and to plan necessary measures for the biodiversity conservation.What is Bio-diversity Conservation?Bio-diversity is regarded as the foundation ... Read More

Mathematics is the most important subject since ages like from the times of Mesopotamians, Egyptians, and Greek people. It has been understood that the initial stages of Mathematics have evolved since 35000 BC where they had first notched the tally bones. Africans, Sumerians, Egyptians, Babylonians, Chinese, Indians and Greeks were all the early Mathematicians.Indian ScholarsIt was understood that during 1200 BC to the 18th century, many scholars such as Aryabhatta, Brahmagupta, Bhaskaracharya, Mahavira, Madhava, Nilakantha Somayaji etc. have contributed crucial theorems of Mathematics starting from the invention of Zero to negative numbers, arithmetic, algebra, trigonometry, geometry, and many astronomical calculations.Many ... Read More

This is a simple diode that exhibits non-linear impedance. These diodes are mostly used at microwave detection and mixing.ConstructionA semi-conductor pellet is mounted on a metal base. A spring-loaded wire is connected with a sharp point to this silicon pellet. This can be easily mounted into coaxial or waveguide lines. The below figure gives a clear picture of this.OperationWith the contact between semiconductor and the metal, a depletion region is formed. The metal region has a smaller depletion width, comparatively. When contact is made, electron flow occurs from semi-conductor to the metal. This depletion builds up a positive space charge ... Read More

A voltage variable capacitance of a reverse biased junction can be termed as a Varactor diode. A varactor diode is a semiconductor device in which the junction capacitance can be varied as a function of the reverse bias of the diode.The CV characteristics of a typical Varactor diode and its symbols are shown in the below figure.The junction capacitance depends on the applied voltage and junction design. If the junction is reverse biased, the mobile carriers deplete the junction, resulting in some capacitance, where the diode behaves as a capacitor, with junction acting as a dielectric. The capacitance decreases with ... Read More

Generally, if the frequency of a signal or a particular band of signals is high, the bandwidth utilization is high as the signal provides more space for the other signals to get accumulated. But the high-frequency signals can’t travel long distances without getting attenuated. We have studied the transmission lines that help the signals to travel longer distances.A WaveguideMicrowaves propagate through microwave circuits, components and devices, which act as a part of Microwave transmission lines, broadly called as Waveguides.DefinitionA hollow metallic tube of the uniform cross section for transmitting electromagnetic waves by successive reflections from the inner walls of the ... Read More