Saatvik Green Energy Assistant Manager Warehouse Interview Questions and Answers

Q1. DFIG Generator?
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Q2. Dv/dt and du/dt filter?
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Q3. Gearbox oil Grade ?
Ans. 
The gearbox oil grade is typically specified by the manufacturer based on the requirements of the gearbox.
• Gearbox oil grade is determined by the viscosity and additives needed for proper lubrication.

• Common gearbox oil grades include SAE 80, SAE 90, and SAE 140.

• Consult the manufacturer's specifications or maintenance manual for the recommended gearbox oil grade.
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Pitch convertor system,

Q1. Salary discussion
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Q1. WTG In Reduction
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Q2. Inox wtg issue major component
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Q1. Inox wtg most failure generator bearing
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Q2. I am interested over change me and
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Q3. Best company insanewin
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Q1. What are the protection in a power transformer
Ans. 
Power transformers are protected by various mechanisms to ensure safe operation and prevent damage.
• Overcurrent protection: Protects against excessive current flow.

• Overvoltage protection: Safeguards against high voltage spikes.

• Temperature monitoring: Prevents overheating by shutting down the transformer if temperature exceeds safe limits.

• Buchholz relay: Detects internal faults such as insulation breakdown or oil leakage...read more
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Q2. Transformer testing
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Q1. Single line diagram
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A single line diagram is a simplified representation of an electrical power system using symbols to show the connections between components.
• Shows the flow of electrical power in a system

• Uses standardized symbols for components like transformers, generators, and circuit breakers

• Helps in understanding the overall layout of the system

• Does not show the physical location of components, only their connections
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Q1. Basic law of governing transformer
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The basic law governing transformers is the law of electromagnetic induction.
• The law states that when the magnetic field around a conductor changes, an electromotive force (EMF) is induced in the conductor.

• This EMF can cause a current to flow if the conductor forms a closed loop.

• In a transformer, this principle is used to transfer electrical energy from one circuit to another through electromagnetic induction.

• The prima...read more
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Q2. What are various losses in transformer
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Various losses in a transformer include copper losses, iron losses, and stray losses.
• Copper losses occur due to resistance in the transformer windings.

• Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.

• Stray losses occur due to leakage flux and stray capacitance in the transformer.

• Copper losses and iron losses are the major contributors to total losses in a transfo...read more
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Q3. Difference between AC and DC
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AC and DC are two types of electrical current. AC changes direction periodically while DC flows in one direction.
• AC stands for Alternating Current and DC stands for Direct Current.

• AC changes direction periodically, typically in a sinusoidal waveform.

• DC flows in one direction only, maintaining a constant polarity.

• AC is used for power transmission over long distances due to its ability to be easily converted to different...read more
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Q4. What is mean by inverter and its basic working
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An inverter is a device that converts DC power to AC power.
• An inverter is commonly used in electrical systems to convert the direct current (DC) produced by sources such as batteries or solar panels into alternating current (AC) that can be used to power appliances and devices.

• The basic working principle of an inverter involves the use of electronic components such as transistors to switch the DC input on and off rapid...read more
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Q5. What all component are required in solar panel installation and brief them
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Solar panel installation requires several components including solar panels, inverters, mounting systems, wiring, and electrical protection devices.
• Solar panels: These are the main components that convert sunlight into electricity.

• Inverters: They convert the direct current (DC) produced by solar panels into alternating current (AC) that can be used in homes or fed into the grid.

• Mounting systems: These are used to secur...read more
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Q6. What all various type of circuit breaker are there their uses and their rating.
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There are various types of circuit breakers with different uses and ratings.
• Miniature Circuit Breaker (MCB) - used in residential and commercial buildings

• Molded Case Circuit Breaker (MCCB) - used in industrial applications

• Air Circuit Breaker (ACB) - used for high voltage applications

• Ground Fault Circuit Interrupter (GFCI) - used to protect against electrical shocks

• Residual Current Circuit Breaker (RCCB) - used to detec...read more
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Q7. Why you choose electrical engineering and what all project you has done and what are your final year project if you mention in resume.
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Easy test with simple questions

Q1. How do solar panels produce electricity
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Solar panels convert sunlight into electricity through the photovoltaic effect.
• Solar panels are made up of photovoltaic cells that contain semiconductors like silicon.

• When sunlight hits the solar panel, the photons in the light are absorbed by the semiconductors.

• This absorption creates an electric current as the electrons in the semiconductors are excited and flow through the material.

• The flow of electrons generates el...read more
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Q2. Tell us about the company
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The company is a leading provider of electrical engineering solutions for various industries.
• Specializes in designing and implementing electrical systems for commercial and industrial buildings

• Offers services such as power distribution, lighting design, and energy efficiency consulting

• Works with clients in sectors like manufacturing, healthcare, and telecommunications

• Has a team of experienced electrical engineers and t...read more
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Q1. Negotiated the salary
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Q1. I was interviewd by my reporting manager, the CEO himself
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