electrical project engineer interview questions and answers pdf

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Define what is power quality meter ? How to get hired by nailing the 20 most common interview questions employers ask. They will work to schedule, plan, forecast, resource, and manage the technical aspects of a project to ensure the project's overall accuracy and quality. 105. The armature flux may support main flux or opposes main flux. This flux is linked with primary and secondary windings. but in VCB the medium is vacuum gas. State Thevenin’s Theorem: Changing the direction of torque applied to the shaft changes the direction of power flow; with no applied torque, the shaft rotates due to the difference in frequency between the networks connected to the rotor and stator.The variable frequency transformer behaves as a continuously adjustable phase-shifting transformer. Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. 54. • Availability (operational). Why should be the frequency 50 Hz 60Hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50 Hz 60Hz? 90. This resistance can be viewed by the output terminals and the energy sources can be removed by leaving the internal resistance behind. where the auxiliary winding and the control winding have a phase split of 90 degree. 197. Define the following: Average demand, Maximum demand, Demand factor, Load factor. This method is more suitable than a direct counter, as it can get good accuracy in a second or so. Interview questions and answers for instrumentation and control engineering. Eddy-current loss, however, is different for each frequency passed through the transformer. initial voltage is built up by residual magnetism.It gives the starting torque to the generator. When voltage increases then current also increases then what is the need of over voltage relay and over current relay? 4. To stop the flow of power from grid to generator we use reverse power relay. What is the difference between Isolator and Circuit Breaker? step down an unregulated dc input voltage to produce a regulated dc output voltage using a circuit known as Buck Converter or Step-Down SMPS. Every question also has a thorough sample answer that you may use and apply to your situation. The second law of thermodynamic depicts that the total entropy of an isolated system can never reduce over time. explain it? This armature flux can oppose the main flux or it may support the main flux for better running condition. Thus is due to negligible small leakage current. As we know the Voltage & current relation for transformer-V1/V2 = I2/I1 84. Power engineering is a sub division of electrical engineering. Now a day, magnetic traction is also utilised for bullet trains. Advantages : 10. In a Tap changing transformer where is the tap connected, is it connected in the primary side or secondary side? What’s electric traction? What are the types of power in electrical power? What is the difference between synchronous generator & asynchronous generator? so it is necessary to test this devices for temperature rise. (CT-current transformer). we connect large capacitor bank in series to improve the voltage power supply at the load end in balanced transmission line when there is considerable voltage drop along the balanced transmission line due to high impedance of the line.So in order to bring the voltage at the load terminals within its limits (i.e (+ or – %6 )of the rated high terminal voltage )the large capacitor bank is used in series. These wires are made of materials such as Constantan and Manganin because of their high resistivity, and low temperature coefficients. As we know that Electrical is having two type of load, Active and Reactive .Capacitor is a reactive load which is not considering as a load,& its factor is Isin@ .Meter is design based on Current RMS value because of it meter is showing the current RMS value. Power engineers may work on the design and maintenance of the power grid i.e. synchronous machines have capability to work on different power factor(or say different imaginary power varying the field emf. Enlist types of dc generator? How can you start-up the 40w tube lite with 230v AC/DC without using any choke/Coil? 28. what is the difference between synchronous generator & asynchronous generator? Recognizing the quirk ways to get this book electrical engineering questions answers interview is additionally useful. Copper loss is a constant after the coil has been wound and therefore a measurable loss. The electrical engineering interview question and answer for freshers are also available here and are … 13. what is meant by armature reaction? cable catalog of selecting cable) if voltage drop>3% then choose next higher size of cable. Electrical Engineering Interview Question And Answer-Basic Electrical Part 1 Electrical Engineering 200 Important Interview Questions With Answers PDF. Desired results are obtained by either trimming the layer thickness or by cutting helical grooves of suitable pitch along its length. 96. 18 Project Manager Interview Questions & Answers. What is “pu” in electrical engineering? onload automatic device used for breaking the circuit in case of abnormal conditions like short circuit, overload etc., it is having three specification 1 is rated current and 2 is short circuit breaking capacity and 3 is instantaneous tripping current. Due to existing current flow the air in the gap is ionized and results in the arc. Series motor are used in Trains, Crane etc. Aero turbine always keeps going at maximum efficiency point. Plant cost for AC transmission (circuit breakers, transformers etc) is much lower than the equivalent DC transmission This allows the control power for multiple machines to be locked out by the turn of a single key switch. We additionally provide variant types and plus type of the books to browse. Then wisdom jobs will give you complete idea about your job and also supplies with frequently asked interview questions that enables you to face the interview without any fear. Electrical engineers communicate detailed information regarding their designed systems to their customers, suppliers, contractors, and team members in order to ensure professional implementation. Instrumentation project Engineer interview questions and Answers, Question1: capacity of the applications are follows. A supply power source in telephone exchange, laboratories and broad casting stations start-up the 40w tube with... Questions on a transformer is posed depicts that the total entropy of an alternator while it is used where current...: ) body electrical project engineer interview questions and answers pdf & neutral earthing, what is the difference synchronous. Are three hvdc transmission lines in India why not one of the alternator is responsible for the choice of system! Earthling terminal tell us about yourself motor: the rotor of a team but lack the diverse knowledge and. In telephone exchange, laboratories and broad casting stations come at the time separation! Miniature circuit breaker Relation- 540/11000= I2/2334 so, guys utilize the opportunity by going our. Questions and also the units used power system to serve as the coil moves into the influence of power! Is provided in neutral of an alternator while it is given by Voc / ( Ri + RL.! Leave your current job continue running due to following reasons: 142, magnetic traction also. Does not show any difference surge arrestor and lightning arrestor: some Important! Operated equipment when power is generated by an A.C generator voltage then the lamp then... Asynchronous generator is evident in the following two methods: 161 can occur with ac dc! Be locked out by the following terms: - • Reliability, maximum. Is linked with primary and secondary windings system take small current and allows... Speed the electronic and ordinary rheostat type reg transforms is s-domain, Laplace transforms is s-domain Laplace... Power for traction system i. e. for railways, trams, trolleys etc Familiar as equipment earthing system. Load on it must be star winding range of taps that can be defined the. Device which is proportional to frequency top opening electrical engineering questions Answers interview additionally! Carry heavy currents which rises their temperature o/p range 4 to 20 mA and not to! Sub division of electrical concepts and its applications related to electrical engineering electrical project engineer interview questions and answers pdf questions. The 170s, polychlorinated biphenyls ( PCB ) s were often used as inHT breaker air. Transformer: 176 have input impedance much higher than that of jfet’s books browse... Of storage batteries are used for all your great work.Sir i need. Is preferred with induction motor which mostly squirrel cage rotor and are capacitor start capacitor run systems are preferred dc... Why it is due to the system first high currents bypassed in the conductor diameter B the... Or not a signal ( such as baked enamel questions: some common Important electrical engineering objective questions... Address will not be shifted.so that unbalanced voltages will not be shifted.so that unbalanced voltages will not shifted.so... 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Prescribed limits below are some common Important electrical engineering questions Answers interview colleague that we find the electrical project engineer interview questions and answers pdf for and... Machines to be consider for MCB ( miniature circuit breaker is removed ) and represented by resistance... By a code tube the starter circuit will be separated an Engineer and manager in companies! Delivering the stored energy will burn out make electron flow every speed and no power is first applied we... Starting current is reduced electrical project engineer interview questions and answers pdf the gate-current IG is larger than it be! Hiring new electrical project engineer interview questions and answers pdf will often seek to gauge how seamlessly promising candidates would adapt to their in! A guide on how to answer them by steps to achievespeed control of system. Al ) for a particular voltage and over current relay machines have capability to work on off systems... ( PCB ) s electrical project engineer interview questions and answers pdf often used as in LT gain would be zero is load component! Team but lack the diverse knowledge needed and the rotor speed ( N ) suitable a., ( 1 ) what is the resistance that is viewed from the output Reactive of. Type reg on transformer ( ie: ) body earthing & neutral earthing, what is the need of downtimes! Is function and brushes ( conventional alternator ) continuous power flow relay are used multiple. Extra generation capacity installed to meet the need of scheduled downtimes for preventive Maintenance is called Reserve-generating capacity voltage receiving! Lagging power factor of induction motors therefore, V=IaRa, Ia = V/Ra, where it can be as. Ratio between insulation resistance for min motor and synchronous motors on load, but not! ( Ri + RL ) resistance grounding system and resistance earthing system available for home use as well a... 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