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.
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
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
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
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
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
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
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
Statically induced e.m.f.: The induced e.m.f. in a coil which is without physical movement, by increasing and decreasing the current through coil producing the flux
Explained terms Resistance, Resistivity, Conductance & Conductivity. Also their formula & unit of measurement
i) Resistance: The property of an electric circuit opposing the flow of current & at the same time causes electrical energy to be converter to
Effect of rising in temperature on resistance of metal conductors, Insulators, Alloys, Semiconductors
State the factors on which resistance of conductor depends. What is the effect of increase in temp on the resistance of Cu conductor, Silicon, Nichrome.
Definition Of Self Inductance : According to Lenz’s law the direction of the self induced e.m.f. is so as to oppose the cause producing it.