A magnetic starter is a device designed to provide a safe starting method to electric motors with a heavy load. This is the most asked Electrical Engineering Interview Questions in an interview. A transformer is essentially an inductor (coil) that has high inductance & low resistance. study material here provides you will It is denoted by Q & its unit is VAR voltage-ampere reactive. In this 2020 Electrical Engineering Interview Questions article, we shall present 10 most important and frequently used Electrical Engineering interview questions. It is mostly used to reduce the flow of current. The vacuum has very fast arc quenching & recovering properties as compared to ACB thus they are used is HT while ACB is used in LT. The amount of current it can supply for a said time thus Ampere-hour Ah is the unit for its rating. The Knee point voltage of a current transformer is the minimum voltage at which a minimum increase (like 10%) of voltage will increase the magnetizing current by a large margin (like 50%). It is a combination of active power & reactive power. Electrical & Electronics Interview Questions & Answers. What is the voltage regulation of the transformer & why is it important? 1. Electrical Engineering is a branch and discipline of electrical concepts and its applications related to electrical systems, electromagnetic and electronic devices. Below are the different basic components –. The properties of a bilateral circuit do not change with changing the current direction or supply voltage. The load may be resistive (R), inductive (L), capacitive (C) or mixed load (R, L, and C). Hello; I like to know,what components can and cannot be tested in circuits,any component.. We have found that no fo basic level questions have increased in every competitive exam,so here we are providing 140 questions based on ITI/Diploma level these questions are very common and easy but when these question will be ask in exam we are not able to give the right answer ,because we have ignored it.so my advise is at least once time every candidate should read this type questions … Basic Electrical Engineering Interview Questions and Answers, In today post, we will be sharing the frequently asked, When manufacturers design a transformer, they have no idea which kind of load will be connected to the transformer. Thus, a transformer won’t operate on DC and may explode with fire. Now, if you are looking for a job that is related to Electrical Engineering then you need to prepare for the 2020 Electrical Engineering Interview Questions. Download. How to Calculate/Find the Rating of Transformer in kVA (Single Phase and Three Phase)? The Laser diode converts electrical energy into light energy just like an LED but it creates coherent light. And JTO Exams, Railways Jen And Section Engineers, DRDO, DMRC, Metro, many 2) Or the supply voltage to the circuit is doubled. here provide also That is why; stranded conductors are used for power transmission. Mainly the transistor can be used for two reasons. The section contains questions and answers on kirchhoff’s law and network solution. The core components of an electrical circuit are current, charge, voltage whereas the multiple other components can be derived from the core components such as Power, Voltage, Potential, etc. follow below links. The flow of current in solids is due to, 3. Start Your Free Software Development Course, Web development, programming languages, Software testing & others. It has better conductivity & low weight as well as cost. About Active power: it is the actual power that is delivered to the load such as transformer, induction motors, generators, etc and dissipated in the circuit. The amount of current it can supply for a said time thus, The secondary cell is a rechargeable battery that can be recharged several hundreds of times (depends on its life cycle). Follow. It has a good torque to current performance. match your calculation with the chart & find you required cable size. It is ON-load & OFF load device, it means it operates in both ON/OFF supply condition. In today post, we will be sharing the frequently asked electrical engineering interview questions and answers related to electrical engineering. The section contains questions and answers on capacitors, charge and voltage, capacitance, capacitors in parallel and series, electric fields, electric flux density, relative permittivity, composite dielectric capacitor, charging and discharging currents, growth and decay, cr networks transients, dielectric strength and displacement current, capacitor and capacitance types. Marx circuit or Marx generator is a circuit that charges a number of capacitors in parallel & then discharges them in series to generate high voltage. It is used in reverse bias to maintain a constant voltage over a range of currents. The MCCB stands off “Molded case circuit breaker”. The section contains questions on inductive and non-inductive circuits, ferromagnetic cored inductor, inductive circuit growth, growth and decay analysis, lr networks transients, mutual inductance, coupling coefficient, coils connected in series, inductor and inductance types. other state level and India level engineering exams. Thanks. The losses due to the current generated inside the core. a signal that has only two levels (1 or 0 / High or low). Electrical4U’s MCQs are in a wide range of electrical engineering subjects including analog and digital communications, control systems, power electronics, electric circuits, electric machines – and much more. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. The key difference between them is that the generator has a stationary magnetic field i.e. A battery converts chemical energy into electrical energy which is the charge stored inside the chemicals. questions for competitive exams pdf, these all electrical objective question with answer The current lags the voltage in an inductive circuit while the current leads the voltage in a capacitive circuit. – Every MCQ set focuses on a specific topic in Basic Electrical Engineering Subject, Who should Practice these Basic Electrical Engineering Questions? There are two types of Control Systems called Open-loop Control System and Closed Loop Control Systems. while in an alternator, the magnetic field rotates inside a conductor windings (stator). Also, its tripping characteristics can be adjusted. The only main difference between Alternator and Generator is that the amount of power being generated and for the application being applied to. What is the maximum power transfer theorem? The magnetization & demagnetization of the core consumes some energy, also known as hysteresis loss. The DC series motor has the highest starting torque out of all motors & that is why they are used in electrical machinery requiring high starting torque like cranes, hoist, etc. – All – Experienced, Freshers and Students. So better equip yourself with the basic understanding and all the projects you had done. They are used in industries. Copyright ©2016–2020 - with Answer: The cosine of the angle between voltage & current is called the power factor. If it is zero then the circuit is purely resistive. Usually, the voltage drop in cables should not be greater then 2.5% of the supply. it can damage the generator. An alternator is for the purpose of generating power on small-scale requirement whereas Generator is for large-scale requirements or supplies. Get Free Android App | Download Electrical Technology App Now! – Examples in British and SI System, Thevenin’s Theorem. It works automatically as well as manually & it can be used again by resetting the lever. The insulation voltage or insulation level is the rated voltage of a cable at which the cable can withstand it for its lifespan without rupturing or breakdown. Measure the required length of the cable in meters. GATE 2021 Syllabus & Pattern, Best books, Previous Papers, Notes & Books Pdf Download

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