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- If you’re searching for electrical engineering interview questions & answers for fresher and experienced candidates. the top 25 electrical engineering interview questions to clear the job interview panel.
Electrical Engineering Interview Questions & Answers
- What do you understand by the word electrical engineering?
Electrical Engineering is the grassland of Engineering that usually deals with the learning and application of electronics, electricity, and electromagnetism. It deals with elevated voltage, particularly AC above the series of 110 or 220V. Moreover, electrical machines and devices use irregular current (AC) / Voltages and are inclined to be better in size and require 230V (In UK) and 110V (In US) single-phase ac voltages whereas in industries and control stations, it may be up to 11kV and for broadcast, it may be superior to 400kV.
- What is referred to the electron in the outer orbit?
Electron in the external orbit is identified as valence.
- What do you mean by electric traction?
Electric traction means with the electric power for the grip system. Electric traction means utilize of the electricity for railways, trams, trolleys etc. Nowadays, magnetic toehold is also used for projectile trains. And essentially dc motors are used for electric traction systems.
- Define the Ideal Transformer?
An ideal transformer is a fantasy transformer in which no losses happen at all. In another language, the transformer Input authority is equivalent to the output authority of the transformer, i.e. they have 100% competence. It is just a hypothetical transformer because there must be some losses in a genuine transformer.
Transformer input Power = Transformer Output Power.
PIN = POUT.
- How the tube light circuit is connected, and how does it work?
A choke is linked in one end of the tube light, and a starter is in sequence with the circuit. When supply is provided, the starter will break off the supply cycle of AC. Due to the unexpected alter of supply, the chock will make around 1000volts. This volt will be competent to break the electrons within the tube to make electron flow. Once the accessible pass through the pipe the appetizer circuit will be out of the part. Now there is no transform of supply causes choke voltage normalized and act as diminish the current.
- Tell me the advantages of speed control using thyristor?
Some of them are:
- Low cost
- High accurate
- Fast switching characteristics than BJT, IGBT
- What is the principle of motor?
Whenever a recent carrying performer is placed in a compelling field, it manufactures turning or twisting movement known as torque.
- Define Armature Reaction?
The result of armature flu to major flux is called armature reaction. The armature flux may hold up main flux or opposes chief flux.
- What do you mean by Ascr cable and where we use it?
ACSR means Aluminum conductor steel non-breakable this performer is used in broadcast & distribution.
- Explain 2 phase motor?
A two-phase motor is a coast with the starting winding, and the operation winding has a stage split e.g. ac servo motor. Where the auxiliary snaking and the manage winding have a stage split of 90 degrees.
- Explain RLC Circuit?
An RLC circuit carries out an electrical circuit consisting of a resistor (R) and the inductor (L) and a capacitor (C), linked in parallel. This circuit is known as a second-order circuit as any electrical energy or current in the circuit can be described by a next order discrepancy equation.
- What are transistors comprised of?
Transistors are comprised of numerous combinations of n-type and p-type semiconductors.
- What happens if the series current double?
If the series current gets double, then, the confrontation is halved.
- What is a Zener diode?
Zener diode is a kind of semiconductor diode that permits existing to flow in the conflicting direction when uncovered to sufficient voltage.
- What does a string of resistors in a series will do?
When a string of resistors in a sequence will split the source voltage into the amount to their values.
- What is the role of the transistor in Circuit?
Transistor has the aptitude to intensify the current, due to the reason that output authority can be senior to the input power.
- What are the types of semiconductors?
There are two kinds of semiconductors intrinsic and extrinsic. In extrinsic semiconductors, you will contain N-type semiconductors and P-type semiconductors.
- What happens when two positively charged materials are placed together?
When two positively electric materials place jointly, it will repel.
- What is automatic voltage regulator?
AVR is a contraction for Automatic Voltage Regulator. It is a central part of Synchronous Generators; it controls the production voltage of the originator by controlling its excitation current. Thus it can direct the Reactive productivity Power of the Generator.
- Define Sf6 circuit breaker?
SF6 is Sulpher hexa Flouride gas. If this gas is used as arc quenching average in a Circuit breaker means SF6 CB.
- What do you mean by frantic effect?
The output voltage is better than the effort voltage or getting end voltage is superior to the sending end voltage.
- What is meant by insulation voltage in cables?
It is the possessions of a wire by the good quality of it can withstand the practical voltage without rupturing it is known as insulation level of the wire.
- State the difference between a four-point starter and three-point stater?
The shunt association in four-point stater is provided unconnectedly from the line whereas in three-point stater it is associated with a bar which is the negative aspect in three-point stater.
- What is a unilateral and bilateral circuit?
A unilateral is a kind of circuit whose properties alter with the course of present flow or the voltage. The properties of a bilateral circuit do not modify with changing the existing direction or bring in voltage.
- Tell me the maximum power transfer theorem?
It mentions the state for maximum power move from source to load. It states that n a linear, bilateral network, the utmost power will be transferred from basis to the load when the outside load resistance equals the interior resistance of the source of the circuit.
So, above are the mentioned interview questions & answers for electrical engineering jobs candidates should go through it and search more to clear the job interview.
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