Electrical engineer interview questions pdf


20 Electrical Engineering Interview Questions & Answers An RLC circuit carries an electrical circuit consisting of a resistor (R) and inductor (L) and a capacitor (C), connected in parallel or series. Download PDF. Electrical Engineering interview questions and answers pdf free download for freshers & Experienced,eee questions mcqs viva objective faqs. Electrical engineering Interview Questions and Answers - Free download as PDF File .pdf), Text File .txt) or read online for free.

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Electrical Engineer Interview Questions Pdf

EEE_ Technical Interview Questions. 1. Why star delta starter is How can you relate power engineering with electrical engineering? Power engineering is a. Whether you are preparing to interview a candidate or applying for a job, review our list of top Electrical Engineer interview questions and answers. Electrical Engineering Interview Question And Answer-Basic Electrical Part 1 ยท Electrical Engineering Important Interview Questions With Answers PDF.

Series reactor starter What is the difference between earth resistance and earth electrode resistance? Only one of the terminals is evident in the earth resistance. In order to find the second terminal we should recourse to its definition: Earth Resistance is the resistance existing between the electrically accessible part of a buried electrode and another point of the earth, which is far away. The resistance of the electrode has the following components: A the resistance of the metal and that of the connection to it. B the contact resistance of the surrounding earth to the electrode. Explain What is use of lockout relay in ht voltage? A lock-out relay is generally placed in line before or after the e-stop switch so the power can be shut off at one central location. This relay is powered by the same electrical source as the control power and is operated by a key lock switch. The relay itself may have up to 24 contact points within the unit itself. This allows the control power for multiple machines to be locked out by the turn of a single key switch.

Experts see it as a microcosm of all things electrical and electronic, without which there would have been literal darkness all over the face of the earth. Alongside the major branches of engineering, the discipline of EEE holds a significant importance in heralding the greatness of the science of engineering as a whole.

For the layman, the branch of Electronic and Electrical Engineering EEE can be defined as the branch of engineering that is associated with the study and applications of electricity, electronics and electromagnetism. Each and every equipment around you function based on the principles of this science. Its uses run the gamut from the early telegraph and telephone to the highly advanced robotic machinery and artificial intelligence based programming.

It is because of the advancements and inventions in this field, that we are able to enjoy the luxuries of today at a nominal price. To describe the specific impact of each technology on the various equipment around us, it becomes a bit complicated. Purpose of exciter is to supply the excitation dc voltage to the fixed poles of generator.

Rotory exciter is an additional small generator mounted on the shaft of main generator. It gives the starting torque to the generator. Difference between a four point starter and three point starter?

The shunt connection in four point starter is provided separately from the line where as in three point state it is connected with line which is the drawback in three point starter.

Why can't use ACB? Actually the thing is vacuum has high arc quenching property compare to air becoz in VCB ,the die electric strength is equal to 8 times of air. That y always vacuum used as in HT breaker and air used as in LT. What is the difference between surge arrestor and lightning arrestor?

LA is installed outside and the effect of lightning is grounded, where as surge arrestor installed inside panels comprising of resistors which consumes the energy and nullify the effect of surge. Why syn. Hence syn. In simple, synchronous generator supply's both active and reactive power but asynchronous generator induction generator supply's only active power and observe reactive power for magnetizing. This type of generators is used in windmills.

Enlist types of dc generator? Generators are classified into two types 1 separately excited d. Give two basic speed control scheme of DC shunt motor? By using flux control method: Whenever a current carrying conductor is placed in a magnetic field it produce turning or twisting movement is called as torque.

88 Electrical Engineer Interview Questions and Answers - PDF

The effect of armature flu to main flux is called armature reaction. The armature flux may support main flux or opposes main flux. Give two basic sprrd control scheme of DC shunt motor?

This type of generators are used in windmills. What is the Polarisation index value? Its ratio between insulation resistance IR i. What will happen when power factor is leading in distribution of power? If their is high power factor, i. What is 2 phase motor?

A two phase motor is a motor with the starting winding and the running winding have a phase split. Advantages of vvvf drives over non vvvf drives for EOT cranes?

20 Electrical Engineering Interview Questions & Answers

What is the significance of vector grouping in Power Transformers? Every power transformer has a vector group listed by its manufacturer. Fundamentally it tells you the information about how the windings are connected delta or wye and the phase difference between the current and voltage. Which type of A. C motor is used in the fan ceiling fan, exhaust fan, padestal fan, bracket fan etc which are find in the houses?

Its Single Phase induction motor which mostly squirrel cage rotor and are capacitor start capacitor run. Its true that if birds touch the single one line phase or neutral they don't get electrical shock Bulbs [devices] for AC are designed to operate such that it offers high impedance to AC supply. Normally they have low resistance. When DC supply is applied, due to low resistance, the current through lamp would be so high that it may damage the bulb element.

DC Series motor has high starting torque. We can not start the Induction motor and Synchronous motors on load, but can not start the DC series motor without load. What is vaccum currcuit breaker. A breaker is normally used to break a ciruit. At the time of seperation an air gap is formed in between the terminals. Due to existing current flow the air in the gap is ionised and results in the arc. VCB's can be used upto 11kv. How tubelight circuit is connected and how it works? A choke is connected in one end of the tube light and a starter is in series with the circuit.

When supply is provided the starter will interrupt the supply intermittent cycle of AC. Due to the sudden change of supply the choke will generate around volts. This volt will capable of to break the electrons inside the tube to make electron flow. Once the current passes through the tube the starter circuit will be out of part. Now there is no change of supply causes choke voltage normalized and act as minimize the current. It is used with generators for charging a number of capacitor in parallel and discharging them in series.

It is used when voltage required for testing is higher than the available. What is encoder, how it function? An encoder is a device used to change a signal such as a bitstream or data into a code. The code may serve any of a number of purposes such as compressing information for transmission or storage, encrypting or adding redundancies to the input code, or translating from one code to another.

This is usually done by means of a programmed algorithm, especially if any part is digital, while most analog encoding is done with analog circuitry. What are the advantages of speed control using thyrister? Low cost 3. Higher Accuract. Why Human body feel Electric shock??

Unfortunately our body is a pretty good conductor of electricity, The golden rule is Current takes the lowest resistant path if you have insulation to our feet as the circuit is not complete wearing rubber footwear which doing some repairs is advisable as our footwear is a high resistance path not much current flows through our body.

The electric train is well insulated from its electrical system. Whenever a current carrying conductor is placed in an magnetic field it produce turning or twisting movement is called as torque. Traction means using the electric power for traction system i. I t's possible by means of Electronic choke. Otherwise it's not possible to ionise the particles in tube. Light, with normal voltage. What is "pu" in electrical engg? Pu stands for per unit and this will be used in power system single line diagram there it is like a huge electrical circuit with no of componenets generators, transformers, loads with different ratings in MVA and KV.

To bring all the ratings into common platform we use pu concept in which, in general largest MVA and KV ratings of the component is considered as base values, then all other component ratings will get back into this basis. Those values are called as pu values.

Operation carried out in Thermal power station? What Is Electric Traction? Electric traction means using the electric power for traction system i. Now a days, magnetic traction is also used for bullet trains.

Question 4.

Question 5. Question 6. Question 7. Question 8. Question 9. What Is Marx Circuit?

It is used when voltage required for testing is higher than the available. Question DC Series motor has high starting torque. What Is Vaccum Currcuit Breaker. A breaker is normally used to break a ciruit. If their is high power factor, i.

What Is 2 Phase Motor? What Is Power Factor?


And Why? Circuit Breaker is one which makes or breaks the circuit. ONAN oil natural,air natural. ONAF oil natural,air forced. OFAF oil forced,air forced. ODWF oil direct,water forced. OFAN oil forced,air forced. What Is Stepper Motor.

What Is Automatic Voltage Regulator avr? Enlist Types Of Dc Generator?

Generators are classified into two types:. Why Syn. Hence syn.

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