Tata Projects Senior MEP Engineer Interview Questions and Answers

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Q1. What is the function of oil in transformer.
Ans. 
Oil in transformers functions as an insulating and cooling medium to prevent overheating and breakdown of electrical components.
• Insulates electrical components to prevent short circuits

• Cools the transformer by dissipating heat generated during operation

• Protects against moisture and contaminants

• Improves dielectric strength of the transformer oil

• Examples: mineral oil, silicone oil, and synthetic esters
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Q2. How does the secondary voltage pass from the primary winding in a transformer.
Ans. 
The secondary voltage passes from the primary winding in a transformer through electromagnetic induction.
• When an alternating current flows through the primary winding, it creates a changing magnetic field around the winding.

• This changing magnetic field induces a voltage in the secondary winding through electromagnetic induction.

• The induced voltage in the secondary winding is proportional to the ratio of the number of t
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Q3. What would be the frequency in India
Ans. 
The frequency in India typically refers to the frequency of electricity supply, which is 50 Hz.
• The frequency of electricity supply in India is 50 Hz.

• This frequency is standard for most of the country's power grid.

• It is important for electrical equipment to be compatible with this frequency to function properly.
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