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Mahalaxmi TMT Electrical Engineer Interview Questions, Process, and Tips

Updated 10 Feb 2021

Mahalaxmi TMT Electrical Engineer Interview Experiences

1 interview found

Interview Questionnaire 

10 Questions

  • Q1. What is induction motor
  • Ans. 

    An induction motor is an AC electric motor in which power is supplied to the rotor by electromagnetic induction.

    • Induction motors are widely used in various applications, including industrial machinery, household appliances, and transportation systems.

    • They work based on the principle of electromagnetic induction, where a rotating magnetic field is created by the stator winding, inducing current in the rotor.

    • The rotor of...

  • Answered by AI
  • Q2. Why stator use for induction motor
  • Ans. 

    The stator is used in an induction motor to generate a rotating magnetic field.

    • The stator consists of a set of windings that are connected to an AC power source.

    • When the AC power is applied, the stator windings create a rotating magnetic field.

    • This rotating magnetic field induces currents in the rotor, which in turn creates a torque and causes the rotor to rotate.

    • The stator windings are typically made of copper or alum...

  • Answered by AI
  • Q3. What is the working principle of transformer
  • Ans. 

    Transformers work on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.

    • Transformers consist of two or more coils of wire called windings.

    • When an alternating current (AC) flows through the primary winding, it creates a changing magnetic field.

    • This changing magnetic field induces a voltage in the secondary winding, which is connected to the load.

    • The ratio of the number ...

  • Answered by AI
  • Q4. How many types of transformer according to voltage transfer
  • Ans. 

    There are two types of transformers according to voltage transfer: step-up transformers and step-down transformers.

    • Step-up transformers increase the voltage from the primary winding to the secondary winding.

    • Step-down transformers decrease the voltage from the primary winding to the secondary winding.

    • Step-up transformers are used in power transmission to increase voltage for long-distance transmission.

    • Step-down transfor...

  • Answered by AI
  • Q5. What is relay
  • Ans. 

    A relay is an electrically operated switch that uses an electromagnet to mechanically control the switching action.

    • Relays are commonly used in electrical systems to control high power circuits with low power signals.

    • They consist of a coil, an armature, and one or more sets of contacts.

    • When the coil is energized, the armature is attracted and the contacts are closed or opened, depending on the relay type.

    • Relays can be u...

  • Answered by AI
  • Q6. What is contactor
  • Ans. 

    A contactor is an electrical device used for switching an electrical circuit on or off.

    • Contactor is used to control the flow of electricity in a circuit.

    • It consists of a coil, contacts, and an enclosure.

    • When the coil is energized, the contacts close and allow current to flow.

    • Contactor is commonly used in motor control applications.

    • Examples of contactor include magnetic contactor and air conditioning contactor.

  • Answered by AI
  • Q7. What is different b/w mpcb & mcb
  • Ans. 

    MPCB and MCB are both circuit protection devices, but they differ in terms of their applications and trip characteristics.

    • MCB stands for Miniature Circuit Breaker, while MPCB stands for Motor Protection Circuit Breaker.

    • MCBs are primarily used for residential and commercial applications, while MPCBs are specifically designed for motor protection in industrial settings.

    • MCBs have a fixed trip current rating and are typica...

  • Answered by AI
  • Q8. What is elcb
  • Ans. 

    ELCB stands for Earth Leakage Circuit Breaker. It is a safety device used to protect electrical circuits from electric shock.

    • ELCB is designed to detect small leakage currents that may occur due to insulation failure or faulty wiring.

    • When an ELCB detects a leakage current, it quickly cuts off the power supply to prevent electric shock.

    • ELCBs are commonly used in homes, offices, and industries to ensure electrical safety.

    • ...

  • Answered by AI
  • Q9. How many types of earthing
  • Ans. 

    There are several types of earthing used in electrical engineering.

    • The most common types of earthing are:

    • - TN-S system: separate neutral and protective earth

    • - TN-C system: combined neutral and protective earth

    • - TN-C-S system: combination of TN-S and TN-C systems

    • - TT system: separate earth for each electrical installation

    • - IT system: no direct connection to earth, relies on insulation monitoring

    • Other types include:

    • - TN-...

  • Answered by AI
  • Q10. What is different between neutral and earth
  • Ans. 

    Neutral is a current-carrying conductor that completes an electrical circuit, while earth is a safety grounding conductor.

    • Neutral carries current back to the source in a balanced electrical system.

    • Earth is a safety measure to prevent electric shock and protect against electrical faults.

    • Neutral is typically connected to the center tap of a transformer, while earth is connected to the ground.

    • Neutral is part of the electr...

  • Answered by AI

Skills evaluated in this interview

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. A 22 kw AOP motor CT cable burn again and again what is the reason ?
  • Ans. 

    The repeated burning of a 22 kW AOP motor CT cable may be due to overloading, short circuits, poor insulation, or incorrect cable sizing.

    • Check for overloading of the motor causing excessive heat in the cable

    • Inspect for short circuits in the motor or the wiring

    • Ensure proper insulation of the cable to prevent overheating

    • Verify if the cable size is appropriate for the motor's power requirements

  • Answered by AI
  • Q2. When CT of AOP motor is bypassed then what effect on the motor ?
  • Ans. 

    Bypassing the CT of an AOP motor can lead to overcurrent and damage to the motor.

    • Bypassing the CT can result in the motor drawing excessive current.

    • This can lead to overheating of the motor windings.

    • Overcurrent can cause damage to the motor components.

    • It can also pose a safety risk due to potential electrical faults.

  • Answered by AI
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Job Portal and was interviewed before Apr 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(4 Questions)

  • Q1. What do you know about PCB ?
  • Ans. 

    PCB stands for Printed Circuit Board, a board made of non-conductive material with conductive tracks for electronic components.

    • PCB is used to mechanically support and electrically connect electronic components using conductive pathways.

    • It is made of non-conductive material like fiberglass, with copper tracks to connect components.

    • PCBs can be single-sided, double-sided, or multi-layered depending on the complexity of th...

  • Answered by AI
  • Q2. What is the active and passive components?
  • Ans. 

    Active components require a power source to operate, while passive components do not.

    • Active components require an external power source to function, such as transistors and integrated circuits.

    • Passive components do not require an external power source, such as resistors and capacitors.

    • Active components can control the flow of electricity, while passive components simply store or dissipate energy.

    • Examples of active comp...

  • Answered by AI
  • Q3. What is the difference between resistance and capacitor?
  • Ans. 

    Resistance is the opposition to the flow of current in a circuit, while a capacitor stores and releases electrical energy.

    • Resistance limits the flow of current, while a capacitor stores and releases charge.

    • Resistance is measured in ohms, while capacitance is measured in farads.

    • Examples of resistors include carbon film resistors, while examples of capacitors include ceramic capacitors.

    • Resistance dissipates energy in the...

  • Answered by AI
  • Q4. What do you know about SMT ?
  • Ans. 

    SMT stands for Surface Mount Technology, a method of electronic component assembly where components are mounted directly onto the surface of a printed circuit board (PCB).

    • SMT components are smaller and lighter than through-hole components, allowing for higher component density on PCBs.

    • SMT components are typically mounted using solder paste and reflow soldering techniques.

    • SMT technology allows for automated assembly pro...

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Oct 2023. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Technical 

(4 Questions)

  • Q1. What is the teransform
  • Ans. 

    A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

    • Transformers are commonly used to step up or step down voltage levels in electrical systems.

    • They consist of two coils of wire, known as the primary and secondary coils, wrapped around a core.

    • The primary coil is connected to the input voltage source, while the secondary coil is connected to the outpu...

  • Answered by AI
  • Q2. What is the current
  • Q3. What is the voltage
  • Ans. 

    Voltage is the difference in electric potential between two points.

    • Voltage is measured in volts (V).

    • It represents the potential energy per unit charge.

    • Voltage is the driving force that pushes electric current through a circuit.

  • Answered by AI
  • Q4. What is the ohm's low
  • Ans. 

    Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor.

    • Ohm's Law is represented by the formula V = IR, where V is the voltage, I is the current, and R is the resistance.

    • It helps in calculating the current flowing through a circuit when the voltage and resistance are known, or determining the r...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Good
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Feb 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Not good for future.

Round 2 - HR 

(2 Questions)

  • Q1. About previous company
  • Q2. Experience discussion
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all tips
Round 2 - Technical 

(1 Question)

  • Q1. Electrical engineering related questions
Round 3 - HR 

(1 Question)

  • Q1. Tell me about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - Please interview asap I am ready for interview
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. What is the synchronisation process of plant ?
  • Ans. 

    Synchronisation process of a plant involves matching the frequency, voltage, and phase angle of the incoming generator with the grid.

    • Ensure the generator frequency matches the grid frequency (50Hz or 60Hz).

    • Match the voltage levels of the generator with the grid.

    • Adjust the phase angle of the generator to synchronize with the grid.

    • Use synchronizing equipment like synchroscope or synchronizing lamps to ensure proper synch...

  • Answered by AI
  • Q2. Brief discussion about alternator and transformer protection system ?
  • Ans. 

    Alternator and transformer protection systems are essential for preventing damage and ensuring safe operation.

    • Alternator protection systems typically include overcurrent, overvoltage, and reverse power protection to safeguard the alternator from damage.

    • Transformer protection systems often involve differential protection, overcurrent protection, and temperature monitoring to prevent overheating and insulation breakdown.

    • ...

  • Answered by AI
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Jun 2023. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Positive things
Round 2 - Technical 

(4 Questions)

  • Q1. Still working here
  • Q2. I still working here
  • Q3. Yes thise want to question
  • Q4. Yes this want Question
Interview experience
4
Good
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Walk-in and was interviewed before Feb 2023. There were 2 interview rounds.

Round 1 - Technical 

(4 Questions)

  • Q1. What is the transformer
  • Q2. What is ac supply and dc supply and what the difference
  • Q3. What is the ac and dc motor
  • Q4. What do you min by induction motor and asynchronous motor
Round 2 - HR 

(2 Questions)

  • Q1. Where are you from
  • Q2. How many member in your family
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Double-check your resume for any spelling mistakes. The recruiter may consider spelling mistakes as careless behavior or poor communication skills.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. Technical transform and circuit
  • Q2. Current, voltage, resistant
Round 3 - Technical 

(1 Question)

  • Q1. Electrical safety precautions

Interview Preparation Tips

Interview preparation tips for other job seekers - Electrical symbol and hand tools ac dc circuit basic Electrical theory

Mahalaxmi TMT Interview FAQs

What are the top questions asked in Mahalaxmi TMT Electrical Engineer interview?

Some of the top questions asked at the Mahalaxmi TMT Electrical Engineer interview -

  1. How many types of transformer according to voltage trans...read more
  2. What is the working principle of transfor...read more
  3. What is different between neutral and ea...read more

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Mahalaxmi TMT Electrical Engineer Salary
based on 5 salaries
₹2.4 L/yr - ₹3.6 L/yr
26% less than the average Electrical Engineer Salary in India
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Mahalaxmi TMT Electrical Engineer Reviews and Ratings

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Electrical Engineer
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₹3 L/yr - ₹3.6 L/yr

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₹1.8 L/yr - ₹2.8 L/yr

Assistant General Manager
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₹9.5 L/yr - ₹12.6 L/yr

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