What are the advantage of rotation magnetic field? The advantages of rotating field system are given below. The DC excitation voltage is low and it is very easy to insulate. This intern reduces the size of the machine. c. Out put current can be taken directly from the fixed terminals on the stator. How can […]
Which is better Armageddon or Deep Impact?
Which is better Armageddon or Deep Impact? However, there is still much debate between film lovers about which one is generally considered the better film. While Armageddon stands out as the fan favorite because it’s a more entertaining movie, a lot more people prefer the emotional depth that comes with Deep Impact. What made more […]
Where do you expect the strongest electric field?
Where do you expect the strongest electric field? The direction of the field line at a point is the direction of the field at that point. The relative magnitude of the electric field is proportional to the density of the field lines. Where the field lines are close together the field is strongest; where the […]
What materials can you use for magnetic particle inspection?
What materials can you use for magnetic particle inspection? Common metallic materials like nickel, iron, steel, and cobalt are all ferromagnetic and perfect candidates for magnetic particle testing. Where is magnetic particle testing used? Magnetic particle inspection is used for detecting defects (discontinuities in surfaces and shallow subsurfacaes) in ferromagnetic materials. By magnetization of the […]
Does cold water help hurricanes?
Does cold water help hurricanes? Once they move over cold water or over land and lose touch with the hot water that powers them, these storms weaken and break apart. Recent studies have shown a link between ocean surface temperatures and tropical storm intensity – warmer waters fuel more energetic storms. What weakens a hurricane? […]
How do you find the internal diameter?
How do you find the internal diameter? Calculating the internal diameter depends on the outside diameter and the thickness of the outer circle. Find the total diameter of the object in question by taking a measurement from the outside wall of one side (the point of origination) straight across to the outside wall of the […]
Is selective coordination required?
Is selective coordination required? Selective coordination is required for systems related to life safety (as defined in the NEC), and is achieved when an overcurrent on a circuit is interrupted and only the closest upstream device opens such that only the section of the electrical system with a problem is taken offline. What is selective […]
What is the force of the earth on the moon?
What is the force of the earth on the moon? Sun, Earth, and Moon Gravitational body causing tidal force Tidal force Body Mass (m) Moon 7.34×1022 kg 1.10×10−6 m⋅s−2 Earth 5.97×1024 kg 2.44×10−5 m⋅s−2 m is mass; r is radius; d is distance; 2r is the diameter G is the gravitational constant = 6.674×10−11 m3⋅kg−1⋅s−2 […]
How is flow rate related to radius?
How is flow rate related to radius? To put this relationship into words: At a given temperature, flow rate through a tube or pipe is inversely proportional to the length of the tube the viscosity of the liquid. Flow rate is directly proportional to the pressure gradient and the fourth power of the radius of […]
Would base isolators be able to protect a building if the ground moves up and down?
Would base isolators be able to protect a building if the ground moves up and down? It is a collection of structural elements which should substantially decouple a superstructure from its substructure that is in turn resting on the shaking ground, thus protecting a building or non-building structure’s integrity. Contrary to popular belief base isolation […]