Electrical Dost

Underground Cable Classification, construction, and Insulation

This system of distribution is also adopted in crowded areas and road crossings. There are two main systems of Transmission and Distribution of Electric power. These are Overhead system Underground system. In the overhead system, the conductors are supported on concrete or steel poles or towers and are bound suitably to the insulators, and are …

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Derive the expression for energy stored in a magnetic field.

The energy required to establish a magnetic field gets stored in it as potential energy. This energy can be recovered when the magnetic field established gets collapsed. Consider a solenoid, the current through which can be controlled with the help of switch S, resistance R. Initially, switch ‘S’ is open, so current through coil, I …

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electrical dost

What is Engineering? What are the engineering studies?

What is Engineering Engineering is that the application of science and math to unravel problems. Engineers find out how things work and find practical uses for scientific discoveries. Scientists and inventors often get the credit for innovations that advance the human condition, but it’s engineers who are instrumental in making those innovations available to the …

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What is a Zero Ohm Resistors?

https://youtu.be/gbVSKBmIOV0          इस पोस्ट को पढ़ने के बाद आप ये समझ जाओगे कि, Zero Ohm Resistor क्या है, और इसे हम क्यू use करते है। Zero Ohm Resistor का use हम दो Point को short करने के लिए/जोड़ने के लिए करते है।         Zero Ohm Resistor दो types के होते …

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With reference to a magnetic circuit, explain the term with their units (1)Magnetic flux,
(2)Magnetic Flux density, (3)Magnetic field strength, (4)Reluctance, (5)Permeability of free space,
(6)Relative permeability, (7)Absolute permeability, (8)M.M.F, (9)Permeance?

1) Magnetic Flux: The total number of forces existing in a particular magnetic field is called magnetic flux. Lines of force can be called lines of magnetic flux. The flux is denoted by symbol Ø and its unit is weber, which is denoted as Wb. 1 weber = 108 lines of force 2) Magnetic Flux …

With reference to a magnetic circuit, explain the term with their units (1)Magnetic flux,
(2)Magnetic Flux density, (3)Magnetic field strength, (4)Reluctance, (5)Permeability of free space,
(6)Relative permeability, (7)Absolute permeability, (8)M.M.F, (9)Permeance?
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Define the terms: a)Specific heat capacity, b)Sensible heat, c)Latent heat, d)Calorific value,
e)Specific enthalpy, f)Electrical work, g)Torque.

a) Specific heat capacity: The quantity of heat required to change the temperature of 1kilogram of substance through 1degree Kelvin is called specific heat of that substance. Its unit is Joules/kg- K. This is denoted by C b) Sensible Heat: The quantity of heat gained or lost when a change in temperature occurs is called …

Define the terms: a)Specific heat capacity, b)Sensible heat, c)Latent heat, d)Calorific value,
e)Specific enthalpy, f)Electrical work, g)Torque.
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Job oriented software's for electrical engineer

Job oriented software’s for Electrical Engineer

Which are Job oriented software’s for Electrical Engineer? बोहुत सारे लोग industrial automation में अपना career बनाना चाहते हैं। या design engineer बनना चाहते हैं। लेकिन हमें पता होना चाहिए कि design engineer बनने के लिए कौन-कौन सी skills आपके पास होनी चाहिए। इस post में हम कुछ software के बारे में बात करेंगे जो …

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PARAMAGNETISM, DIAMAGNETISM, AND FERROMAGNETISM ON THE BASIS OF DOMAIN THEORY:

Magnetism has its origin in the circulating charges in an atom. An atom of any substance consists of a little, massive, charged nucleus Surrounded by charged electrons revolving in orbits around the nucleus. A circulating electron is like a current loop and features a dipole moment. An electron also has a spin magnetic dipole moment. …

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Explain the phenomenon of self-induced e.m.f. and mutually induced e.m.f.

Explain the phenomenon of self-induced e.m.f. and mutually induced e.m.f.

Self induced e.m.f. Fig. 1 Consider a coil having ‘N’ turns and carrying current ‘I’ when switch ‘S’ is in closed position. The current magnitude can be varied with the help of variable resistance connected in series with battery, coil and switch as shown in figure. The flux produced by the coil links with the …

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Obtain an expression for the coefficient of coupling K for the magnetic circuits?

Obtain an expression for the coefficient of coupling K for the magnetic circuits?

The coefficient of coupling between two coils is defined as the fraction of magnetic flux producedby the current in one coil that links with the other coil. Expression: Consider two magnetically coupled coils, coil 1 & coil 2 having N1 and N2 turns respectively. Case 1:Current I1 flows through coil 1 which sets up a flux Φ1  …

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