Author: admin
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Controlled Rectifiers
A type of rectifier whose voltage can be varied is known as the controlled rectifier. We use SCRs, MOSFETs and IGBTs to make an uncontrolled rectifier a controlled one. These rectifiers are preferred over their uncontrolled counterparts. There are two types of controlled rectifiers, and they are Half Wave Controlled Rectifier and Full Wave Controlled…
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Uncontrolled Rectifiers
The type of rectifier whose voltage cannot be controlled is known as an uncontrolled rectifier. Uncontrolled rectifiers are further divided as follows: The type of rectifier that converts only the half cycle of the alternating current into the direct current is known as a half-wave rectifier. Likewise, a full-wave rectifier converts both positive and negative…
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What is Rectifier?
A rectifier is an electronic device that converts an alternating current into a direct current by using one or more P-N junction diodes. A diode behaves as a one-way valve that allows current to flow in a single direction. This process is known as rectification. A rectifier can take the shape of several physical forms…
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Unit Process
Chemical reaction is at the heart of the unit processes. A chemical reactor is an equipment which falls under the category of unit processes. Literal chemical change takes place inside the equipment wherein the the chemical structure of the material changes and it transforms and forms an entirely new material. All kinds of chemical reactions…
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Unit Operations
A unit operation is defined as a process which does not involve any chemical reaction. Unit operations only deal with physical changes of the materials involved in the process. They are equipments which cause the materials to undergo physical changes. The physical changes are carried out for variety of purposes. Generally unit operations steps are…
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Unit Operation and Unit Process
Unit Operation and Unit Process :- The entire chemical engineering can be classified into two groups; unit operations or unit processes. The concept of unit operations was introduced in 1915 by Dr. Arthur D. Little. The concept of unit processes was introduced in 1923 by P.H. Groggin.
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Need for Constant Vigilance in Quality Control and Process Management
Chemical engineers play a vital role in product development and production, often working with hazardous substances and complex processes. This requires them to maintain constant vigilance in quality control and process management. They are responsible for ensuring that the manufacturing process runs smoothly and that products meet the required standards. Any error or oversight could…
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Physical Demands of Working in a Plant or Laboratory Environment
Chemical engineers often work in industrial settings such as plants or laboratories. These environments can be physically demanding, as engineers may need to stand for prolonged periods, handle heavy equipment or samples, or work in potentially hazardous conditions. They may also be exposed to harmful substances, excessive noise, and high temperatures. Consequently, they must always…
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High-Stress Situations Due to Potential for Catastrophic Failures
Chemical engineers often work with hazardous materials and potentially dangerous equipment. This means that they must always be vigilant and adhere to strict safety protocols to prevent accidents. However, even with the best planning, there is always a risk of a catastrophic failure. The potential for such devastating failures can lead to high-stress situations for…