Multiple choice questions answers electrical engineering. Electrical transformer important 30 objective questions and answers in hindi in this video we will know 30 important objectives types questions and. In a transformer, the eddy current loss is proportional to the square of the diameter of the core. Types of transformer different types of transformer.
Wellillustrated, this reference helps everyone install and maintain transformers correctly, quickly, an. In a transformer the energy is conveyed from primary to secondary. Electrical transformer important 30 objective questions and. Noload test on a transformer is caried out to determine a. Construction of a transformer the transformer mainly consists of the magnetic circuit, electric circuit, dielectric circuit, tanks, and accessories. These objective type electrical engineering questions are very important for. Electrical transformer quiz questions electrician exams.
Multiple choice questions mcq on transmission and distribution for electrical engineering. Instrument transformers mcqs with answers zinhle mhlongo 031716 show how a current transformer can be used to extend the range of an ac ammeter. Stones are provided in the substation to a to avoid fire accident by draining oil from transformer if leaks b to. Mcq on transmission and distribution for electrical. Failure of distribution transformers causes capital loss and loss of revenue to the nation. Top most asked objective questions or mcq on transformer. For the same rating, which one will give more out put. Why is a megger preferred to an ohmmeter when measuring the insulation breakdown of a distribution transformer. By which of the following systems electric power may be transmitted. Hence the transformer core is laminated so that the net effective diameter of the transformer core reduces and thus eddy current loss can be minimized. The noise in transformer due to vibration of laminations set by. The different types of transformer are step up and step down transformer, power transformer, distribution transformer, instrument transformer comprising current. Distribution transformer handbook alexander publications.
Power system mcqs with explanatory answers generation, transmission and distribution mcqs with explanatory answers 1. Transformer questions and answers electrical academia. Power transformers distribution transformers electrical. Difference between power transformer and distribution. Distribution automation handbook prototype elements of power d istribution systems 1mrs757959 4 3 elements of power distribution systems 3. Multiple choice questions on transmission and distribution. Which of the following is the basic element of transformer a. Such as single phase transformer, three phase transformer, pole mounted transformer, pad mounted transformer, and underground transformer. The main difference between power and distribution transformer is distribution transformer is designed for maximum efficiency at 60% to 70% load as normally doesnt operate at full load all the time. Transmission and distribution of electrical power and switchgear and protection. Distribution transformer is an essential link in the distribution system. May 15, 2018 distribution transformerthe step down transformers used for electric power distribution purpose are referred as distribution transformer. Expected mcq pdf 3 for vizag mt exam 2017 ssc je new exam date feb2017. Power transformers distribution transformers electrical engineering mcq questions and answers.
Dec 15, 2018 electrical transformer important 30 objective questions and answers in hindi in this video we will know 30 important objectives types questions and answers of electrical transformer in hindi. Acces pdf multiple choice questions answers electrical engineering detail and also provides some important points to remember for. Electrical engineering multiple choice questions and answers with. Book name a course in power systems by jb gupta author j b gupta.
This course covers the multiple choice questions on transformer. Sep 10, 2019 pdf electrical power system by jb gupta pdf download. We are a participant in the amazon services llc associates program, an affiliate advertising program designed to provide a means for us to. Also there is detailed analysis about the consisting of a distribution transformer. Electrical transmission and distribution objective question. Harikesh yadav general, online mcq ee december 22, 2016 1 a transformer transforms. Which of the following does not change in a transformer. Low voltage cables with a range up to 1 kv are used for energy distribution from the last transformer station to the customer. The main purpose of using core in transformer is to. The test measurement values are affected by variables such as temperature, humidity, test voltage, and size of the transformer. Distribution transformer handbook is packed with practical information on transformer concepts, singlephase and threephase transformer connections, and procedures for installing overhead and padmount transformers. Also information about some types of transformers are gathered as well as distribution transformer connections installations. The fuses listed in the next few pages are intended for use under oil in distribution equipment. The premature failure rate of distribution transformers is above 25% in some of the regions of the.
Here in this post we have tried to made available important questions of transformer explaining its working principle, its types, applications and uses in detail in order to explain related doubts. Transformers multiple choice questions and answers mcqs electrical engineering interview transformers viva lab manual pdf free download. Transformer design drytype and cast resin, protection methods are being referred and more also included in the specific research document. Note the fused cutout and lighting arrestor combination external to the transformer. Sep 02, 2014 102 top transmission and distribution electrical engineering multiple choice questions and answers latest transmission and distribution questions and answers list 1. Aug 16, 2014 this test is performed at or above the rated voltage to determine if there are low resistance paths to the ground or between winding to winding as a result of winding insulation deterioration. To make this resistance test for insulation breakdown, a very high voltage is necessary beyond the range of a standard ohmmeter. Product literature and application advice were provided by abb. Download important questions of transformer with solution. Mcqs of ch8 random variable and probability distributions of saleem akhtar for ics1 complete mcq 7.
Transformer multiple choice questions mcq and answers. Both abb protective links and drawout fuses offer protection to the distribution system should an internal transformer fault occur. Top most asked objective questions or mcq on transformer for electrical engineering electricalnotes4u. The maximum efficiency of a distribution transformer is a at no load b at 50% full. Multiple choice questions mcq on transformer for electrical engineering in this post, we are going to share multiple choice. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Mcqs of ch8 random variable and probability distributions of. You have to finish following quiz, to start this quiz. Save my name, email, and website in this browser for the next. The effective power determined must be multiplied by the power factor cos. Transformer is an electrical device that makes the transfer of energy by forming inductive coupling between the winding of its circuits. Basics, maintenance, and diagnostics vii contents continued page 4.
Distribution transformers 502500 kva the characteristic data of distribution transformers are determined by the requirements of the network. In power transformer the flux density is higher than the distribution transformer. Distribution transformerthe step down transformers used for electric power distribution purpose are referred as distribution transformer. A transformer that with a 120 volt primary and 12 volts in the secondary, and a primary with 800 turns of wire, how many turns would be required in the secondary. What is the main cause of noise in the transformer. All day efficiency of transformer basic transformer questions and answers electrical transformers questions and answers how transformer impedance is designed induction motor rotating transformer relation low voltage winding near core of the transformer questions and answers on transformers questions and answers on transformers pdf transformer. Transformer ratings are usually expressed in terms of.
Home electrical engineering multiple choice questions 300 top most transformers electrical engineering multiple choice questions and answers. The maximum efficiency of a distribution transformer is a at no load b at 50% full load c at 80% full load d at full load. Distribution transformers medium distribution transformers large distribution transformers single phase transformers. There are various types of transformer used in the electrical power system for different purposes, like generation, distribution and transmission and utilization of electrical power. Here you will learn important multiple choice question on transmission and distribution. In this post, we are going to share multiple choice questions mcq on transformer for electrical engineering students. A line which connects between substation and distribution transformer is a secondary feeder. Losses working and construction of transformer mcq. Electrical transformer important 30 objective questions. The main elements of the transformer are the primary and secondary windings and the steel core.
Sue the varying current flowing through the primary winding creates a magnetic flux inside the core of the transformer and in secondary winding. Pdf electrical power system by jb gupta pdf download. Transformer electrical engineering mcq questions and answers. Mar 27, 2017 multiple choice questions on transmission and distribution. The maximum efficiency of a distribution transformer is a at no load b. Transformers mcq question is the important chapter for a electrical engineering and gate students. There are several types of transformer used in the distribution system. Transformers multiple choice questions with answers 1. Selection of distribution transformers for supplying power. Multiple choice questions mcq on transformer for electrical engineering in this post, we are. The core of the transformer is made up of silicon steel in order to provide a continuous magnetic path. The major usage of transformer is to either to vary relative voltage of the circuit or isolate it. The transformer core is generally made of a alumimium b silicon steel c copper d wood. File type pdf electrical transmission and distribution objective question answer this video provides all the important mcq questions of switchgear and protection in detail and.
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