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 […]
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 […]
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 […]
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 […]
What is the charge of so4?
What are protective strategies?
What are protective strategies? Protective behaviour strategies. Help the child identify who they can talk to if they don’t feel safe. Make sure the child knows what to do if they are in an unsafe situation. Kids should have their own safe place in the house – a place that is ‘theirs,’ where they can […]
Are multiple choice tests accurate?
Are multiple choice tests accurate? Multiple choice test questions, also known as items, can be an effective and efficient way to assess learning outcomes. Multiple choice test items are less susceptible to guessing than true/false questions, making them a more reliable means of assessment. When should I use multiple choice test? Multiple-choice items are best […]