Engineering MCQ's.🎓

Transformer :-     Transformer is static device or which transfers AC power from one circuit to another without change in frequency. The main parts of transformer are as follows:-  Three limb core. LV winding. HV winding. Tapped winding. Tap leads. LV bushings. HV bushings. Frame. ON load tap changer. Conservator tank. Radiator. Breather. Test valve. Temperature and oil level indicators. Buccholz relay.   We transformer there is no change on frequency from No load to full load. The voltage level can be changed either it stepped up or down according to need. The transformer is very crucial device in electrical system now days, Without it we can't run our system efficiently. There are two main type of transformer:-  1. Power transformer. 2. Distribution transformer. Other some special types of transformer are there used for special purpose only like, isolation transformer, instrument and welding transformer etc.

  ● Did you know why insulators are in our electrical system ?     The insulator is a very crucial part of our electrical system. It is used  for safety to separate two energised or non energised parts of electrical equipment or in transmission and distribution system.      The most important role of insulators in generation, transmission and distribution. This insulators mainly made up of  porcelain.  Insulators are used in electrical equipment to support and separate electrical conductors without allowing current through themselves.        An insulating material used in bulk to wrap electrical cables or other equipments is called indulation. The term insulator is also used more specifically to refer to insulating supports used to attach electric power distribution or transmission lines to utility poles and transmision towers.     They support the weight of the suspended wires without allowing the current to flo...