Transformers do not work on DC supply. Let us see why.The transformer works on the principle of mutual inductance i.e. current in one winding must change uniformly to induce the EMF in the other. When a DC voltage V is applied to the primary of a transformer, the primary will draw a...
ChatGPT uses the Transformer architecture, which is a deep learning model designed for natural language processing (NLP) tasks. The Transformer model is made up of two main components:the encoder and the decoder. The encoder does the work of processing input text, while the decoder is used to...
There are several design choices: • Starting from a typical AC outlet, a step-up transformer could be directly used, with the AC rectified to DC just prior to the final output. These transformers have marginal cost, and the output would be fixed. • Starting from a typical AC outlet,...
Why are DC ammeters not used to measure AC? Briefly explain how an alternating current transformer works. And why are alternating current transformers so important to the world? What factors might account for the loss of energy/efficiency in a pulley system? Why is emf induced if there is a...
Perhaps because it may use DC to do the measurement and that may effect the core of the trafo? // The D.C. could leave a bit of magnetism residue in the core. Best way to fix that is to run some AC through the transformer to demagnetize it. Music signal could work for small sig...
a电压比相等,其电压比最大允许相差为±5%; The transformer copper loss refers to the loss which at the beginning of the secondary wire DC resistance creates, therefore only needs the transformer on to add on the nominal current then, the concrete operation is the secondary coil direct pipe nipple...
(one period of 1 kHz), but not usually better than ten microseconds. This level of accuracy is acceptable for some but not all substation applications. Modulated IRIG inputs to IEDs are generally transformer-isolated and provided with an automatic gain-control stage, so as to accept input ...
Explain why the fan cart cannot accelerate. Why are DC ammeters not used to measure AC? Why does helium gas absorb heat? What factors can cause a body's temperature to rise? Explain. Why does condensation form most rapidly on the coldest object in a room ...
In some apparatus such as shunt diode safety barriers and apparatus using a particular type of transformer, the earth connection is an important part of the method of protection. Where surge protection against induced voltages (usually from lightning) is introduced then this introduces a further ...
wall power to a speed control to a transformer to an a/c electric motor. but with a twist.the power is from a wind-up power spring with a switch set where the spring would trip when it un-winds and when it retracts to a certain point,the spring would be run on a gear reduction ...