Transformers Important Short Interview Questions

Transformers Important Short Interview Questions
ট্রান্সফরমার এর গুরুত্বপূর্ণ সংক্ষিপ্ত প্রশ্ন
• What is the difference between power transformers and distribution transformers?
• Why do we represent leakage flux in a transformer by inductive reactance?
• Draw an Equivalent circuit of a Transformer.
• What are the advantages of open and short-circuit tests on a transformer?
• What are the advantages of back to back test in determining the efficiency of a transformer?
• Why are iron losses constant at all loads in a transformer?
• What would happen if a power transformer designed for operation on 50 Hz is connected to a 500 Hz source of the same voltage?
• What would happen if a power transformer designed for operation on 50 Hz were connected to a 5 Hz source of the same voltage?
• Why are auto transformers not safe for supplying a low-voltage from a high-voltage source?
• What functions are performed by instrument transformers?
• What are the advantages and disadvantages of 3-phase transformer over 3 single-phase banks of transformers?
• What are the advantages of oil over air as a cooling medium in transformers?
• What is CT and PT?
• A current transformer must never be operated with its secondary winding open-circuited. Explain.
• What is the Ideal transformer?
• Why efficiency of transformer is high?
• Define Transformation Ratio?
• Why Transformer Rating In kVA, Not in KW?
• What will happen if the primary of a transformer is connected to D.C supply?
• During No load why the power factor of the transformer is very low?
• What are the conditions for parallel operation of two transformers?
• Why Silica gel is used in transformers?
• Why the core of Transformer is laminated?
• What are Taps and when are they used?
• What is meant by Regulation in a Transformer?

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