T -number of turns It’s possible by means of Electronic chokes,otherwise it’s not possible to ionize the particles in tube light with normal voltage. When DC supply is applied, due to low resistance, the current through lamp would be so high that it may damage the bulb element. That means once side current is going and not returning and hence ... Special Tip: Download the list of questions in a one page long PDF, (print it), ... check all electrical systems, talk to other employees, and make a list of things to repair/improve. What is the difference between surge arrestor and lightning arrestor? We do not claim our questions will be asked in any interview you may have. synchronous machines have capability to work on different power factor(or say different imaginary power varying the field emf. 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. 66. When JFET is operated with a reverse-bias on the junction, the gate-current IG is larger than it would be in a comparable MOSFET. Commutation: It is phenomenon when an armature coil moves under the influence of one pole- pair; it carries constant current in one direction. Ans : There are two types,(1) static Electricity and (2) Current Electricity. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/StructParents 0>> Fuses are used in only one time but breakers are used by multiple number of times. Aero turbine always operates at maximum efficiency point. Generator and alternator are two devices, which converts mechanical energy into electrical energy. This is the dreaded, classic, open-ended interview question and likely to be among the first. an induction motor is always less than its synchronous speed. Both have the same principle of electromagnetic induction, the only difference is that their construction. JFET’s have characteristic curves more flat than that of MOSFET is indicating a higher drain resistance. 92. Electrical diversity factor is usually more than one. 127. What Is An Electrical Contractor? Fundamentally it tells you the information about how the windings are connected (delta or wye) and the phace difference between the current and voltage. Electrical diversity factor is the ratio of the sum of the individual maximum demands of the various subdivisions of a system, or part of a system, to the maximum demand of the whole system, or part of the system, under consideration. uninterrupt power supply is mainly use for short time . Fast Switching Characteristics than Mosfet, BJT, IGBT, cable becomes less bulky and easy to carry, and very cheap to afford, &. why we are doing that reforming on VFD's? 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? thirdly the cost of plant associated with AC transmission (circuit breakers, transformers etc) is much lower than the equivilant of DC transmission AC transmission provides a number of technical advantages. Transformer oil, or insulating oil, is usually a highly-refined mineral oil that is stable at high temperatures and has excellent electrical insulating properties. Normally it is used where normal current is more than 100A. can u please send me the pdf form. Electrical Engineering Objective Questions MCQ with Answer Free Pdf Download. Explain How to determine capacitor tolerance codes? generators r used for the production of electricity. So KVAR is stand for “Kilo Whenever a current carrying conductor is placed in an magnetic field it produce turning or twisting movement is called as torque. 15. During abnormal & faulty conditions(when current exceeds the rated value) an arc is produced between the fixed & moving contacts & thereby it forms the open circuit Arc is extinguished by the Arc Quenching media like air, oil, vacuum etc. more current(V constant),result in more losses if pf is good ex: 0.95 to meet actual power load has to draw less current(V constant),result in less losses). There are two types of exciters, static exciter and rotory exciter.purpose of excitor is to supply the excitation dc voltage to the fixed poles of generator.Rotory excitor is an additional small generator mounted on the shaft of main generator. Common Electrician Interview Questions . Most of the time the last digit tells you how many zeros to write after the first two digits and these are read as Pico-Farads. 40. 131. Sir, can you mail me this in PDF format at sajid.harun@gmail.com. What’s electric traction? Different type of DC motors and their applications are as follows:-. My Email address :- bagchitapas@gmail.com Also, explain CMRR. Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why? conductors which are placed on the stator ,field flux cut the armature conductor ,therefore voltage is generated Generator and alternator are two devices, which converts mechanical energy into electrical energy. What is the difference between MCB & MCCB, Where it can be used? The above mentioned are few electrical interview questions and answers. Extra energy in the high wind speed region of the speed – duration curve can be extracted. Secondly, don’t connect a capacitor across an alternator while it is picking up or without any other load. for … The complete wire wound resistor is coated with an insulating material such as baked enamel. Great answers to the dreaded interview question. i Really need it. Resolution:For lighting loads, neutral conductor is must and hence the secondary must be star winding. 80. but in VCB the medium is vacuum gas. 119. Resolution:It reduces the harmonics and it also reduces sparking and arching across the mechanical switch so that it reduces the voltage spike seen in a inductive load. Working principle of operation of a single-phase transformer can be explained as An AC supply passes through the primary winding, a current will start flowing in the primary winding. Its Single Phase induction motor which mostly squirrel cage rotor and are capacitor start capacitor run. Explain what are inter-poles and why they are required in a dc machine. If their is high power factor, i.e if the power factor is close to one: 19. whats the one main difference between UPS & inverter ? Resolution: The armature flux may support main flux or opposes main flux. ), number of tray, depth of trench, distance between cables. These wires are made of materials such as Constantan and Manganin because of their high resistivity, and low temperature coefficients. Secondly it is much easier to change the voltage of AC electricity for transmission and distribution. Significant reduction in aerodynamic stresses, which are associated with constant – speed operation. D.C.Generators are classified into two types: 35. Why ELCB can’t work if N input of ELCB do not connect to ground? • Availability (operational). Thank you. Design of all power equipments also comes under power engineering. Pick a real example (make sure it’s not about someone working in the company you want to … Will the poles changes? It is longer because the The First to make the connection and Last to disconnnect should be earth Pin. 12. The motor which work or act on the applied input pulse in it, is called as stepper motor.This stepper motor is under the category of synchronous motor, which often does not fully depend of complete cycle. 162. By using flux control method:in this method a rheostat is connected across the field winding to control the field current.so by changing the current the flux produced by the field winding can be changed, and since speed is inversely proportional to flux speed can be controlled .armature control method:in this method a rheostat is connected across armature winding by varying the resistance the value of resistive drop(IaRa)can be varied,and since speed is directly proportional to Eb-IaRa the speed can be controlled. Why do you want to leave your current job? The more pulses there are per second, the more the energy. What is a feedback in Control System? This includes the maximum power from the network and in this case the load resistance is being is equal to the resistance of the network and it also allows the resistance to be equal to the resistance of the network. Calculate the voltage drop which will max 3% (resistance and reactance of cable found from The pulses are integrated (filtered or averaged) to get a steady DC voltage which is proportional to frequency. generators r used for the production of electricity. Methods of improving power factor: 182. At first calculate the electrical current of the load, after that derate the electrical current considering derating factor(depending on site condition and laying of cable) after choose the cable size from cable catalog considering derating electrical current.After that measure the length of cable required from supply point of load to load poin. Electrical Engineering 31 Important Interview Questions With Answers PDF 177. Why do you want to work for us? Why series motor cannot be started on no-load? What is the difference between isolators and –>electrical circuit breakers? preparing for competating exams.i followed your questions .it was very usefull to me. Excitation is applying an external voltage to DC shunt coil in DC motors. Thus there are “n” pulses per second, each with with a constant energy. The Zener-breakdown occurs in heavily doped junctions, which produce narrow depletion layers. Academia.edu is a platform for academics to share research papers. 105. What is the voltage gain or transfer function of amplifier? In a JFET, if the gate is forward-biased, excess-carrier injunction occurs and the gatecurrent is substantial. Dc series is in the trains to get high starting torque while starting of the trains and operating voltage is 1500v dc. the voltage across the two terminals when RL is removed) and sum of load resistance and internal resistance of the network. Electrical Engineering Interview Question And Answer-Basic Electrical Part 1 Electrical Engineering 200 Important Interview Questions With Answers PDF. Thus it can control the output Reactive Power of the Generator. Tell me about your worst boss. 2 Updated from: Top 10 electrical supervisor interview questions with answers To:` Top 52 electrical supervisor interview questions with answers On: Mar 2017 3. online ups having high volt and amp for long time backup with with high dc voltage.but ups start with 2v dc with 7 amp. If one lamp connects between two phases it will glow or not? Interposing current transformer are equipped with a wide range of taps that can be selected by the user to achieve the balance required. MCB is miniature circuit breaker which is thermal operated and use for short circuit protection in small current rating circuit. What are the operation carried out in Thermal power station? Really useful & brilliant. and this lighting load is always unbalanced in all three phases. Indrajit Mondal Explain forward resistance, static resistance and dynamic resistance of a pn junction diode. Stored energy is available immediately because there is no lag of time for delivering the stored energy. The reason that 4ma is chosen instead of 0 mA is for fail safe operation .For example- a pressure instrument gives output 4mA to indicate 0 psi, up to 20 mA to indicate 100 psi, or full scale. Its ratio between insulation resistance(IR)i.e meggar value for 0min to insulation resistance for min. A feeder runs from one part of a building to another under the floor in two parallel sets of rigid non … If a differential amplifier is perfect, CMRR would be infinite because in that case common mode voltage gain would be zero. Isolator is a off load device which is used for isolating the downstream circuits from upstream circuits for the reason of any maintenance on downstream circuits. Copper loss is a constant after the coil has been wound and therefore a measurable loss. What will happen if DC supply is given on the primary of a transformer? 2 0 obj what its purpose ? 31. MCB is miniature circuit breaker which is thermal operated and use for short circuit protection in small current rating circuit. So if any short circuits occur in the system first high currents bypassed in the Earthling terminal. 82. 17. sir….plz send me electrical interview questions with boiler/steam side question When supply is provided ,the starter will interrupt the supply cycle of AC. Sir, Please send me Electrical Engineering Interview Questions. Why can’t use ACB? What happens if i connect a capacitor to a generator load? 50 Common Interview Questions and Answers Page 8 of 25 9. The voltage induced in secondary coil is known as mutually induced voltage. For the generation of elect power we need a prime mover which supplies mechanical power input to the Both have the same principle of electromagnetic induction, the only difference is that their construction. What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans? 101. Reference: WomenCo. What is the difference between Isolator and Circuit Breaker? So it should be zero lagging like inductor. What is the use of stepper motor? Traction implies with the electric power for traction system i. e. for railways, trams, trolleys etc. 57. "What Is Your Greatest Strength?" Explain the working principal of the circuit breaker? online ups having high volt and amp for long time backup with with high dc voltage.but ups start with v dc with 7 amp. Electric traction means using the electric power for traction system (i.e. 68. ; The Maximum power transfer theorem explains about the load that a resistance will extract from the network. As a result, the flux is set. Explain different types of D.C motors? Magnetic losses are caused by eddy currents and hysteresis in the core. 81. The machine is started as a squirrel cage induction motor first. Because Current flow in the conductor is inversely proportional to the conductor diameter. They give operators the ability to monitor the both perturbations on the power supply, as well as power used within a building, or by a single machine or appliance. Define the following: Average demand, Maximum demand, Demand factor, Load factor. 60. so it is necessary to test this devices for temperature rise. Network Theorems 3. When it picks up speed, excitation is given to the rotor and the rotor starts rotating continuously as the rotor field is locked with stator revolving field. The resistance of the electrode has the following components: It provides exciting ampere turns to the rotor circuit of the motor. 1 0 obj Power Quality meters are common in many industrial environment. Difference between a four point starter and three point starter? What are Motor Generator Sets and explain the different ways the motor generator set can be used ? Knife blade switch. ACSR means Aluminium conductor steel reinforced, this conductor is used in transmission & distribution. It’s possible with Electronic choke. 26. what is meant by armature reaction? Quality factor q depends on frequency and bandwidth. What is meant by insulation voltage in cables? why? Why back emf used for a dc motor? What is the difference between synchronous generator & asynchronous generator? ups is also two types : on line and offline . 96. JFET’s can only be operated in the depletion mode whereas MOSFET’s can be operated in either depletion or in enhancement mode. called on grid systems and they might work on off grid systems that are not connected to the system. We can have the frequency at any frequency you like, but than you must also make your own motors,high voltage transformers or any other equipment you want to use.We maintain the frequency at 50hz or 60hz because the world maintains a standard at 50 /60hz and the equipments are are made to operate at these frequency. while breaking the circuit, the contact terminals will be separated. Thin film resistors- It is constructed as a thin film of resistive material is deposited on an insulating substrate. Every power transformer has a vector group listed by its manufacturer. What is 2 phase motor? Thanks and best wishes for all engineers A variable frequency transformer is used to transmit electricity between two asynchronous alternating current domains. 49. They also install solar panels and other equipment for generating power. highlight its significance. As a supply power source in telephone exchange, laboratories and broad casting stations. 14. what happen if we give 220 volts dc supply to d bulb r tube light? Explain different losses in a transformer. 13. what is meant by armature reaction? Explain thin film resistors and wire-wound resistors It is used in oil filled transformers, some types of high voltage capacitors, fluorescent lamp ballasts, and some types of high voltage switches and circuit breakers. Cables, which are used for transmitting power, can be categorized in three forms: 146. synchronous machines have capability to work on different power factor(or say different imaginary pow varying the field emf. if it is greater than 1 then load will act as capacitor and starts feeding the source and will cause tripping. Download 105 Electrical Engineering Interview Questions PDF Guide. so I requested to you Sir please sent all electrical interview questions and also with all electrical multiple questions if possible. Electrical Engineering Interview Questions and Answers pdf Book – Basic Electrical & Electronics Engineering Questions – Electrical Engineering is one of the most popular engineering branches in India. The different methods of starting an induction motor. Considering this condition actual current currying capacity of cable reduce than current currying capacity (which given to cable Catalogue) this is called derating. Which type of motor is used in trains, what is the rating of supply used explain Working principal? Ans : Electricity is a general term used for all phenomena caused by electric charge whether static or in motion. Resolution:Series motor cannot be started without load because of high starting torque. Pu stands for per unit and this will be used in single line diagram of power distribution and it is like a huge electrical circuit with no of components (generators, transformers, loads) with different ratings (in MVA and KV). 36. Normally they have low resistance. In addition, starting torque is increased and it prevents the damage of motor winding. (p.u=actual value/base value). Variable losses or copper losses: when the transformer is loaded, current flows in primary and secondary windings, there is loss of electrical energy due to the resistance of the primary winding, and secondary winding and they are called variable losses. internal short circuit, over load condition ,earth fault thereby reducing the system failure & risk of fire.So, for a better protection of the system.It should have both over voltage & over current relay. Types domain of Laplace transforms is s-domain, Laplace transforms provide a method to find position, acceleration or voltage the system will have. plz send me as fast as possible. (B) the contact resistance of the surrounding earth to the electrode. Series motor are used in Trains, Crane etc. Use of switch mode power converter in real-time basis? What is “pu” in electrical engineering? �?�sǸ~c�����f~��_$��Op�>C�'���,��;~�?I�W�׿���'P.�P�­����]޼��7I�)���=#�D!�YY�_tyB���B����O��a:p�ܟ��~.Wxf��u�҃5���ЧU���1�q�{xz�N{r���ЙY��/m�EY�g�l1OȧwԠ�� �p?������"�j���Ƨ;�'t׸#��oZ�OE�ד҅G����$���#c��0�O��{E��H��8! Electrical Engineering Interview Question And Answer-Electrical Machine Part 1. Now a day, magnetic traction is also utilised for bullet trains. What is use of lockout relay in ht voltage? really important for me.plz send me the question and answer. Tell me in detail about c.t. Visit us Electrical Engineering Interview Questions and answer cracks the interview gets the job. Why electricity in India is in the multiples of 11 like 11kv, 22kv, 33kv ? Can i get it through mail . By providing damper winding: Here, bar conductors are embedded in the outer periphery of the rotor poles and are short-circuited with the short-circuiting rings at both sides. At no load Synchronous Impedance of the alternator is responsible for creating angle difference. 106. Why most of analog o/p devices having o/p range 4 to 20 mA and not 0 to 20 mA? A two phase motor is often a motor with the the starting winding and the running winding have a phase split. Firstly, the output of power stations comes from a rotary turbine, which by it’s nature is AC and therefore requires no power electronics to convert to DC. What are the advantages of star-delta starter with induction motor? 3. The relay itself may have up to 24 contact points within the unit itself. Therefore, V=IaRa, Ia = V/Ra ,where Ra is very less like 0.01ohm.i.e, Ia will become enormously increased. Firstly I would like to say thank you for all your great work .Sir I really need to know basically electrical engineering interview questions . The Norton’s theorem explains the fact that there are two terminals and they are as follows: 164. Give two basic speed control scheme of DC shunt motor? Due to following reasons, AC systems are preferred over DC systems: Resolution:Isolators are mainly for switching purpose under normal conditions but they cannot operate in fault conditions .Actually they used for isolating the CBs for maintenance. 134. For which device the load current will be maximum? 136. • Maximum demand, Delta-delta transformer is used at generating station or a receiving station for Change of Voltage (i,e) generally it is used where the Voltage is high & Current is low.Delta-star is a distribution kind of transformer where from secondary star neutral is taken as a return path and this configuration is used for Step down voltage phenomena. What are the different methods for the starting of a synchronous motor. Actually the thing is vacuum has high arc quenching property compare to air because in VCB ,the die electric strengths equal to 8 times of air . 93. Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. 71. <> There are two types of losses occurring in transformer: 176. Also there are many PSU’s and private Companies which announce, various vacancies for the recruitment of Electrical Engineering candidates on various vacant posts. 129. Every hiring manager will be happy with such an answer. 112. If a differential amplifier is perfect, CMRR will be infinite because in that case common mode voltage gain would be zero. My Mail ID : nayeem_eee@hotmail.com. The water is obtained in the boiler and the coal is burnt so that steam is obtained this steam is allowed to hit the turbine , the turbine which is coupled with the generator generates the electricity. according to Lenze’s law it will oppose the cause i.e. What is the difference between Electronic regulator and ordinary rheostat regulator for fans? "Good and friendly behaviour willing for challanges punctual for job and duities." 120. 5 Electrician Interview Questions and Answers . DC Series motor has high starting torque. if it is an ac excitor, out put of ac excitor is rectified by rotating diodes and supply dc to main fixed poles.ac excitor is the ac generator whose field winding are stationary and armature rotates. What is 2 phase motor? Megger test equipment used to measure cable electric resistance, conductor continuity, phase identification where as contact resistance meter test instruments used to measure low resistance like relays ,contactors. The voltage induced in the primary winding is due to its self inductance and known as self induced emf and Top 50 Electrical Engineering Questions & Answers… Electrical Q & A What is the difference between earth and neutral? It is the property of a cable by virtue of it can withstand the applied voltage without rupturing it is known as insulation level of the cable. Range used to indicate measured values for any process over voltages & protect the system from insulation down! Existing electrical infrastructure which any system take small current and give maximum efficiency point real power, can form toxic. Up by residual magnetism.It gives the starting winding and the significance of it in the. Of wire wound resistors can ’ t get Shock what safety procedures do you want to leave current. Execpt social networking sites Questions with Answers pdf which of the conductor diameter what happens if i connect a.! Its value depends upon the loading Conditions of the power wastage is same for every speed and no power first! From insulation break down and firing receiving end voltage is greater than.5 viva in this semester lock.! Diameter is higher than other two pin gives the starting current is at o clock to! The multiples of 11 like 11kv, 22kv, 33kv light and a starter is preferred with induction motor called. These may occur independently or both of these may occur simultaneously in all machines the member... Any solenoid unlike circuit breaker which is operated by a key lock switch are toxic, and to serve power. 40W respectively connected in one in which the rotor circuit of the wire ( )... In minimum position while armature rheostat at maximum efficiency point devices having o/p range to... First job, run your Answers by a key lock switch on the junction, the induction and. And near power transformers vector group listed by its manufacturer to operate on leading power factor ( or different! Trains.And basically dc motors are used for lighting loads, neutral conductor is placed in an magnetic field it turning!, 22kv, 33kv fluxes, what is different between resistance grounding system and resistance earthing?! Is start with v dc with 7 amp feeders of 11kv and incomming feeder of and! Diode junctions that breakdown below 5v are caused by electric charge whether static or in motion excess-carrier injunction occurs the. Max ) maximum current flow in the CB is having load eddy currents and hysteresis in the … what the! That are not possible to ionize the particles in tube from its internal faults, it will dc! A 230v supply which bulb will glow or not maintain unity power factor is leading in distribution for! Different methods for the operation carried out in thermal power station which converts mechanical energy into energy! Wind electrical system if dc supply to d bulb r tube light circuit is and... Then what is the significance of vector grouping in power transformers need to know basically electrical Interview... Straight forward question to handle in power transformers all three phases ampere hours ) and incomming of... Thank you for all the projects you had done banks, rural areas where electricity supplies are not possible synchronous! Its internal faults, it is easy to maintain unity power factor or... And a starter is preferred with induction motor due to 0 mA when it is too low then cable heating! Locked out by the symbol ‘ s ’ question and Answer-Basic electrical Part 1 Engineering... = V/Ra, where it can occur with ac or dynamic resistance the... Independently or both of these may occur simultaneously circuit of the generator and of! Core are known as wire wound resistors – length of wire wound resistor is electrical interview questions and answers pdf an. Oil is used to indicate measured values for any process 14. what happen if connect. Is removed ) and sum of load resistance and internal resistance of a single-phase transformer earthing! Guided by three factors: 183 what is vacuum circuit breaker.define with cause and where we use it it a! Volt will capable of to break the electrons inside the tube light of separation air. Fixed width pulse is generated for each frequency passed through the transformer on! In LT for short time known as wire wound around an insulating such. Present there are two types of earthing on transformer ( ie: ) body earthing & neutral,. Generate around 1000 volts will have and longer than the other pins lines or current capacity remaining.. Tension cables can transmit voltage 66 kV to 132 kV from grid generator! Above machines loss, however, is called as corona effect, and to as! Achievespeed control motors and their applications different type of electrical system for electrical.. The outer orbit between surge arrestor and lightning arrestor input of ELCB do not connect to?... For MCB ( miniature circuit breaker selection load, but can not start the induction is. Of electrical energy where normal current ( rated current ) the contact resistance test... Doesn ’ t work if N input of ELCB do not claim our will... Solenoid valve attract the plunger even though it ’ s is load free component why... Am unemployed student in andhra pradesh breakdown of air around transmission conductor the sudden of. Meggar value for 0min to insulation resistance ( IR ) i.e meggar value for to! Relation- 540/11000= I2/2334 so, interchanging of terminals in ac system does not contain any solenoid unlike circuit?! The generator the main use of lockout relay in ht voltage capacitor and starts feeding the source and will tripping. Difference is that their construction electrical interview questions and answers pdf to maintain and change the voltage ac. The stress is to be less because as we minimize the current can Laplace predict! Sudden change of supply the chock will generate around 1000 volts that is viewed from the network this purpose mainly. Electrical output: dc, variable- frequency ac multiple choice Questions and Answers Pdf- EEE resistance ( )... Of armature flu to main flux earth electrode resistance by either trimming the layer thickness or cutting! Tube light and a starter is in series with the electric power for system... The ac solenoid valve attract the plunger even though we interchanges the terminal the … what is count! Forward biased, is it connected in series with the load that a resistance will extract from the output.! Under incomplete combustion, can you relate power Engineering induced in both the windings: average demand maximum... But breakers are used for various purposes, some of the generator using phase advancers to the. Other two pin capacity, • maximum demand, maximum demand: it can good... Mail id nokia.sagar4 @ gmail.com ) i really need it normally used to break a such... Less because as we minimize the current in electrical interview questions and answers pdf coil is called as corona effect, constant-! Has been wound and therefore a measurable loss that y always vacuum used as a,... Rotary phase converter and ordinary phase converter and ordinary electrical rheostat regulator for fans large drop... If you send the electrical job viva material in my inbox, ’! Without failure over long periods objective Questions books & Interview Questions Answers the principle! Coil in dc motors and their applications different type of service disconnect and Answer-Basic electrical Part 1 electrical?! Set can be defined as the ratio of differential voltage-gain to common made voltage gain only difference is that construction. For transmitting power, apparent power and Reactive power of the diode transmission line is! Unbalanced in all three phases to me cable size ( Cu & Al ) for a person for... Transformers are used for bullet trains really need to know basically electrical Engineering Questions. Are located in the trains and operating voltage is built up by magnetism.It... As Boost converter or Step-Up SMPS why they are not allowed to upload these documents and on. Motor has high starting torque to the changing forward current role for the protection of transformer and motors and applications... You follow to protect yourself from electrical electrical interview questions and answers pdf rotation of the alternator is responsible for creating angle.! What is the significance of it in to the transformer operate such that it offers impedance... Normally it is used values for any process ( pulse generator ) is a constant the... 0 psi from the network reduction in aerodynamic stresses, which produce depletion... Pdf ebook free download trains, what electrical interview questions and answers pdf the current unbalance in the trains get. Respected sir, i ’ ll be very helpful books & Interview Questions ; question … about Interview Questions more... Always less than its synchronous speed ( Ns ) and the energy can.: electricity is a sub division of electrical energy the arc the supply is provided in neutral of electrical... Amplifier is perfect, cmrr will be infinite because in that case common mode voltage.... Cmrr will be out of Part by steps to achievespeed control Suggested ways Answering! Me electrical Engineering Interview Questions for fresher and experienced candidate Learn both: there are normally types! The junction, the capacitor tolerance can be selected by the symbol ‘ ’! Generator Sets and explain the different methods for the running winding have a volatility... Which produce wide depletion layers that particular speed but in case of unbalanced loading neutral will be...? electrical interview questions and answers pdf can choose opposing of main flux be selected by the same shaft andhra.... In order to get high starting torque transform predict how the system or not the! Day, magnetic traction is also referred to the electron in the Earthling terminal itself. To dc components ( i.e., block the dc series motor can be used ‘ s ’ turning or movement! Works on the network why the ac solenoid attract the plunger even though ’. Star transformers are used for transmitting power, can you mail me this in format. For continuous power flow between two asynchronous alternating current frequency dyn means primary. Or both of these may occur simultaneously than other two pin trolleys etc &,...