Croda India Company General Maintenance Engineer Trainee Interview Questions and Answers

Basic Question covering GK, Logical Reasoning , Physics , and Electrical Core question

Q1. What is Power factor? What is Slip of motor ? How a power plant works ? Why 11kv is not used for transmission purpose ? What are the losses of transmission line ? How many types of circuits are there? What...read more
Ans. 
Power factor is the ratio of real power to apparent power in an AC circuit.
• Power factor is a measure of how effectively electrical power is being used in a circuit.

• It is calculated by dividing the real power (in watts) by the apparent power (in volt-amperes).

• A power factor of 1 indicates that all the power is being used effectively, while a power factor less than 1 indicates inefficiency.

• Low power factor can lead to in...read more
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Q1. Ejector system and boiler
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Q2. Glr repairing and agitator type
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Q3. Utility like chiller compresser water ro nitrogen
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Provided a topic daily related work

Q1. Discussed single linear diagram
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Q2. Parts of transformer
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Parts of a transformer include core, windings, insulation, tap changer, bushings, and cooling system.
• Core: Provides a path for magnetic flux

• Windings: Primary and secondary coils for transferring energy

• Insulation: Prevents short circuits

• Tap changer: Adjusts the turns ratio

• Bushings: Insulated devices for connecting external circuits

• Cooling system: Keeps the transformer from overheating
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Q3. Rating of transformer
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The rating of a transformer refers to its power capacity and voltage levels.
• Transformer rating is typically given in kVA (kilovolt-amperes) or MVA (megavolt-amperes).

• It indicates the maximum power that the transformer can handle without overheating.

• The rating also includes the primary and secondary voltage levels of the transformer.

• For example, a transformer may be rated as 500 kVA, 11 kV/415 V.

• Properly sizing the tran...read more
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Q4. One Bay Shutdown process
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One Bay Shutdown process involves isolating a single bay for maintenance while keeping the rest of the system operational.
• Isolate the bay by closing necessary valves and disconnecting equipment

• Ensure proper tagging and lockout procedures are followed

• Implement safety measures to prevent accidents

• Coordinate with other departments to minimize impact on operations

• Perform necessary maintenance work efficiently and safely

• Tes
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Q5. Scheme of substation
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A scheme of a substation refers to the layout and configuration of the various components within the substation.
• The scheme includes the arrangement of transformers, circuit breakers, busbars, and other equipment.

• It also shows the connections between different components and how power flows through the substation.

• The scheme is essential for understanding the overall operation and maintenance of the substation.

• Examples o...read more
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Q1. What is eddy current What is 5s tpm What is electromagnetic induction What formula of rpm measurement How dc motor work How you daily shift handover takeover How deal with major breakdown How star delta ...read more
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Questions related to maintenance engineering including eddy current, 5S TPM, electromagnetic induction, RPM measurement, DC motor, shift handover, major breakdown, and star delta starter.
• Eddy current is a current induced in a conductor due to a changing magnetic field

• 5S TPM is a methodology for workplace organization and standardization

• Electromagnetic induction is the production of an electromotive force across a condu...read more
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Q1. Family baground and eduction oral discussion
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