Thejo Engineering Senior Electrical Engineer Interview Questions and Answers

Q1. What is System studies
Ans. 
System studies involve analyzing and evaluating the performance of electrical systems to ensure efficiency and reliability.
• System studies involve analyzing the behavior of electrical systems under different operating conditions.

• They help identify potential issues and optimize the performance of the system.

• Examples of system studies include load flow analysis, short circuit analysis, and protection coordination studies.
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Q2. What is load flow study
Ans. 
Load flow study is a method used in electrical engineering to analyze and calculate the flow of power in an electrical network.
• Load flow study helps in determining the steady-state operating conditions of a power system.

• It involves calculating the voltage magnitude and phase angle at each bus in the network.

• The study considers factors like power generation, transmission line losses, and load demand.

• It helps in identify...read more
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Q1. Motor type, Pump lowering, ESR piping etc.
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Q2. Solar Specification
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Q1. Notice period is negotiable
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Q2. 30%hike on current ctc
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Q1. Transformer tests
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Q1. Self introduction & previous company experience
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Q1. Earthing design
Ans. Explain Earthing design using excel or any earthing design software
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Q2. Cable Sizing calculation
Ans. Explain step by step procedure of Cable Sizing
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Q3. How to handle designers in tough time
Ans. 
Communicate openly, provide support, set clear expectations, offer solutions
• Communicate openly with designers to understand their challenges and concerns

• Provide support and resources to help designers overcome tough times

• Set clear expectations and goals to keep designers focused and motivated

• Offer solutions and brainstorm ideas together to find the best way forward
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Q4. Explain your individual contribution to the project
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The test is very difficult you have to complete all 20 questions which consist GC , subject related

Q1. What is the wave trape?
Ans. 
A wave trap is a device used in electrical engineering to prevent unwanted signals or frequencies from entering a system.
• Wave traps are typically used in power systems to filter out specific frequencies that can cause interference.

• They are designed to allow only desired signals to pass through while blocking unwanted signals.

• Wave traps can be used in substations, transmission lines, and other electrical systems to impr...read more
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Q2. Which types of circuit breaker use in substation
Ans. 
Types of circuit breakers used in substations include air circuit breakers, oil circuit breakers, vacuum circuit breakers, and SF6 circuit breakers.
• Air circuit breakers are commonly used in low voltage applications.

• Oil circuit breakers are used in high voltage applications.

• Vacuum circuit breakers are compact and reliable, suitable for medium voltage applications.

• SF6 circuit breakers are used in high voltage substations
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Global warming ,covid-19, current affairs

Q1. How to charge the Transformer?
Ans. 
A transformer can be charged by applying a voltage to its primary winding.
• To charge a transformer, connect a power source to its primary winding

• The voltage applied to the primary winding creates a magnetic field

• This magnetic field induces a voltage in the secondary winding

• The transformer is charged and ready to transfer power
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Q2. Parts of transformer
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Parts of a transformer include the core, windings, and insulation.
• Core: Provides a path for magnetic flux and is usually made of laminated iron or steel.

• Windings: Consist of primary and secondary coils, which are wound around the core.

• Insulation: Prevents electrical leakage and is used to separate the windings and core.

• Tap changer: Allows for voltage regulation by changing the number of turns in the winding.

• Cooling sys...read more
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