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Voltamp Transformers Interview Questions and Answers
Voltamp Transformers Interview Experiences
7 interviews found
Anonymous
I applied via Referral and was interviewed in Mar 2024. There was 1 interview round.
(4 Questions)
- Q1. Process and understanding, Development of New facility
- Q2. Man power Handling - Contracts
- Q3. Understanding of IS and root cause of failure
- Ans.
Understanding IS and root cause of failure is crucial for preventing future issues in production.
IS stands for Information Systems, which are used to collect, store, process, and distribute information within an organization.
Root cause analysis is a method used to identify the underlying cause of a problem or failure.
Having a strong understanding of IS can help identify potential failures in the production process and ...
- Q4. Inspections handling
Interview Preparation Tips
- Basic Process knowledge
Production Manager Interview Questions asked at other Companies
MALAY SHARMA
Selected
I applied via Referral and was interviewed in Feb 2024. There was 1 interview round.
(5 Questions)
- Q1. Basic question related to electrical and related to what they are manufacturing
- Q2. What is transformer and there working principle?
- Ans.
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
Consists of two coils of wire, known as primary and secondary coils
Primary coil is connected to a source of alternating current
Alternating current in primary coil creates a changing magnetic field
This changing magnetic field induces a voltage in the secondary coil
Voltage in secondary coil can be hig...
- Q3. Safety devices in transformer?
- Ans.
Safety devices in transformers include pressure relief devices, Buchholz relay, and temperature sensors.
Pressure relief devices are used to release excess pressure in the transformer to prevent explosions.
Buchholz relay is a gas and oil operated relay that detects internal faults in the transformer.
Temperature sensors are used to monitor the temperature of the transformer and prevent overheating.
- Q4. Controlling devices in the transformer and there working and why we are using?
- Ans.
Controlling devices in transformers are used to regulate voltage, protect against overloads, and ensure efficient operation.
Controlling devices such as tap changers are used to adjust the voltage ratio of the transformer to maintain a constant output voltage.
Protective devices like relays are used to detect and isolate faults such as overloads, short circuits, and overvoltage conditions.
Monitoring devices like temperat...
- Q5. What are delta connection and star connection why we use and when and where we use ?
- Ans.
Delta connection and star connection are two types of connections used in electrical circuits. Delta connection is used for three-phase systems, while star connection is used for single-phase systems.
Delta connection is used in three-phase systems where the load is balanced and the power requirement is high.
Star connection is used in single-phase systems where the load is unbalanced and the power requirement is low.
Del...
Top Voltamp Transformers Service Engineer Interview Questions and Answers
Service Engineer Interview Questions asked at other Companies
Lavina K
(2 Questions)
- Q1. Tell me about your self
- Q2. Technical transformation
Junior Engineer Interview Questions asked at other Companies
(2 Questions)
- Q1. Only Transformer based Questions
- Q2. Transformers Testing, Maintenance
Top Voltamp Transformers Service Engineer Interview Questions and Answers
Service Engineer Interview Questions asked at other Companies
Voltamp Transformers interview questions for popular designations
I applied via Walk-in and was interviewed in Apr 2023. There were 2 interview rounds.
(2 Questions)
- Q1. It was good experience
- Q2. What is your family background?
Interview Preparation Tips
Intern Interview Questions asked at other Companies
lucky sharma
Selected
I appeared for an interview before Mar 2023, where I was asked the following questions.
- Q1. What is delta and star connection?
- Ans.
Delta and star connections are two methods of connecting three-phase electrical systems, affecting voltage and current distribution.
Delta connection (Δ) connects each phase to two others, forming a closed loop.
Star connection (Y) connects each phase to a common neutral point.
In delta, line voltage equals phase voltage; in star, line voltage is √3 times phase voltage.
Delta is used for high power applications; star is us...
- Q2. What is difference between OSR and buchholz relay?
- Ans.
OSR detects overcurrent, while Buchholz relay protects transformers from faults by sensing gas and oil flow.
OSR (Overcurrent Relay) is used to detect overcurrent conditions in electrical circuits.
Buchholz relay is specifically designed for oil-filled transformers to detect gas accumulation and oil flow.
OSR operates based on current levels, while Buchholz relay operates based on physical changes in the transformer oil.
E...
- Q3. How radiator works in the transformer for cooling?
- Ans.
Radiators in transformers dissipate heat, ensuring efficient operation and preventing overheating through oil circulation.
Transformers generate heat during operation due to electrical losses.
Radiators are external heat exchangers that cool the transformer oil.
The oil circulates through the radiator, transferring heat to the air.
Cooling fins increase the surface area for better heat dissipation.
In larger transformers, f...
- Q4. How we calculate voltage and current, if we know the power of transformer in KVA?
- Ans.
To calculate voltage and current from transformer power in KVA, use the formulas: Power (KVA) = Voltage (V) x Current (A).
Power (KVA) = Voltage (V) x Current (A) / 1000
For a 100 KVA transformer at 400V: Current = 100,000 VA / 400V = 250 A.
For a 50 KVA transformer at 230V: Current = 50,000 VA / 230V ≈ 217.39 A.
Voltage can also be calculated if current is known: Voltage = Power (KVA) x 1000 / Current (A).
Top Voltamp Transformers Service Engineer Interview Questions and Answers
Service Engineer Interview Questions asked at other Companies
I applied via AmbitionBox and was interviewed in Feb 2022. There were 2 interview rounds.
Group discussion
(8 Questions)
- Q1. What are your salary expectations?
- Q2. Why should we hire you?
- Q3. Share details of your previous job.
- Q4. What is your family background?
- Q5. Why are you looking for a change?
- Q6. Where do you see yourself in 5 years?
- Q7. What are your strengths and weaknesses?
- Q8. Tell me about yourself.
Interview Preparation Tips
- Transformers
Follow up on applications,
Set yourself apart with letters of recommendation.
Junior Engineer Interview Questions asked at other Companies
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I applied via Walk-in and was interviewed in Nov 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. Electronic Mechanic explain
- Ans.
An electronic mechanic is a professional who repairs and maintains electronic equipment.
Electronic mechanics diagnose and troubleshoot issues in electronic equipment.
They repair or replace faulty components in electronic devices.
They perform regular maintenance and preventive measures to ensure optimal performance.
Electronic mechanics may specialize in specific types of equipment, such as computers, televisions, or med...
- Q2. SMR Inverter CVT etc difinition
Interview Preparation Tips
Anwar Ali
Selected
I appeared for an interview before Nov 2023.
(2 Questions)
- Q1. About your previous company and work profile.
- Q2. How many Experience of field.
(2 Questions)
- Q1. All technical basic electronic question.
- Q2. Power supply and ask about soldering .
Senior Engineer Interview Questions & Answers
CG Power and Industrial Solutions
posted on 24 Apr 2021
I applied via Naukri.com and was interviewed before Apr 2020. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. About circuit breaker, transformer.
- Q2. Single line diagrams, layout, substation calculation.
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