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Author - Santhakumar Raja

Napthol Structure
  • Health Science

Miscellaneous Compounds

August 17, 2023
by Santhakumar Raja
3 min read
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Some of the phenols discussed below are: Cresols, Resorcinol, and Naphthols. Cresols Cresols (or hydroxytoluene) belonging to the family of methyl phenols have the molecular formula C7H8O. They are aromatic organic compounds...

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  • Health Science

Aromatic Character/Aromaticity

August 16, 2023
by Santhakumar Raja
2 min read
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Aromatic compounds are organic compounds resembling benzene in their chemical behaviour and possess certain characteristic properties different from those of aliphatic and alicyclic compounds. These characteristic properties are...

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Shunt, Series and Compound Windings
  • Electrical

Shunt, Series and Compound Windings

August 16, 2023
by Santhakumar Raja
2 min read
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When the field winding of a d.c machine is connected in parallel with the armature, as shown in Fig (a), the machine is said to be shunt wound. If the field winding is connected in series with the armature, as shown in Fig (b)...

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  • Electrical

Transformer Losses and Efficiency

August 15, 2023
by Santhakumar Raja
2 min read
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There are broadly two sources of losses in transformers on load, these being copper losses and iron losses. Copper losses are variable and result in a heating of the conductors, due to the fact that they possess resistance. If R1...

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One wattmeter method for a balanced load
  • Communications
  • Electrical

Measurement of Power in Three Phase Systems

August 14, 2023
by Santhakumar Raja
2 min read
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Power in three-phase loads may be measured by the following methods : One-wattmeter method for a balanced load Wattmeter connections for both star and delta are shown in Fig. Total Power = 3 × wattmeter reading Two-wattmeter...

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Three Phase Supply
  • Communications
  • Electrical

Three Phase Supply

August 10, 2023
by Santhakumar Raja
2 min read
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A three-phase supply is generated when three coils are placed 120° apart and the whole rotated in a uniform magnetic field as shown in Fig (a). The result is three independent supplies of equal voltages which are each displaced...

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Digital to analogue conversion
  • Communications
  • Electrical

What is Digital to Analogue (D/A) Conversion

August 10, 2023
by Santhakumar Raja
3 min read
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There are a number of situations when digital signals have to be converted to analogue ones. For example, a digital computer often needs to produce a graphical display on the screen; this involves using a D/A converter to change...

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Op AMP Voltage
  • Electrical

Op AMP Voltage Comparator – theteche.com

May 25, 2023
by Santhakumar Raja
1 min read
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If both inputs of the op amp shown in Fig. 1 are used simultaneously, then from equation, the output voltage is given by: Vo = Ao(V2 − V1) When V2 > V1 then Vo is positive, its maximum value being the positive supply...

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Introduction to Operational Amplifiers
  • Electrical

Introduction to Operational Amplifiers

May 25, 2023
by Santhakumar Raja
2 min read
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Operational Amplifiers (usually called ‘op amps’) were originally made from discrete components, being designed to solve mathematical equations electronically, by performing operations such as addition and division in...

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Two Port Networks
  • Electrical

Two Port Networks and Characteristic Impedance

May 25, 2023
by Santhakumar Raja
2 min read
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Networks in which electrical energy is fed in at one pair of terminals and taken out at a second pair of terminals are called two port networks. The network between the input port and the output port is a transmission network for...

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Featured Posts

  • Cellular/Cell-Mediated/T-Cell Immunity
    by Santhakumar Raja
  • Application of rDNA Technology and Genetic Engineering the Production of Insulin
    by Santhakumar Raja
  • Application of rDNA Technology and Genetic Engineering in the Production of Interferon
    by Santhakumar Raja
  • Applications of rDNA Technology and Genetic Engineering in Medicine
    by Santhakumar Raja
  • Techniques Used in Recombinant DNA Technology
    by Santhakumar Raja
  • Expression of Cloned Gene Within the Host
    by Santhakumar Raja
  • Hybrid Released Translation (HRT) Method
    by Santhakumar Raja
  • Colony Hybridisation (or Nucleic Acid Hybridisation) by Replica Plate Method
    by Santhakumar Raja
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