Nissi Engineering Solution Interview Questions and Answers

Q1. What is impedance
Ans. 
Impedance is the measure of opposition to the flow of alternating current in a circuit.
• Impedance is a combination of resistance and reactance in a circuit.

• It is measured in ohms (Ω).

• Impedance can be calculated using the formula Z = √(R^2 + X^2), where R is resistance and X is reactance.

• Impedance is important in determining the behavior of circuits in AC systems.

• Examples of components with impedance include resistors, c
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Q2. Explain kcl and kvl
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KCL and KVL are fundamental laws in electrical engineering used to analyze circuits.
• KCL (Kirchhoff's Current Law) states that the total current entering a node is equal to the total current leaving the node.

• KVL (Kirchhoff's Voltage Law) states that the sum of voltages around a closed loop in a circuit is zero.

• KCL is based on the principle of conservation of charge, while KVL is based on the principle of conservation of...read more
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Q1. Tell me about your self
Ans. 
I am a dedicated and experienced Testing & Commissioning Engineer with a strong background in electrical engineering.
• Experienced in testing and commissioning electrical systems

• Proficient in troubleshooting and problem-solving

• Strong knowledge of industry standards and regulations

• Excellent communication and teamwork skills

• Certified in relevant technical skills and software tools
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Q2. Different between circuit breaker and isolator
Ans. 
Circuit breaker is used to protect electrical circuits from damage caused by overload or short circuit, while isolator is used to isolate a circuit for maintenance or repair.
• Circuit breaker is designed to automatically open and close the circuit in case of overload or short circuit.

• Isolator is manually operated to disconnect a circuit for maintenance or repair.

• Circuit breaker is a safety device, while isolator is a swi...read more
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Technical questions and basic aptitude question

Q1. Based on resume
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Q2. Self intro
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Q1. Self introduction
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Q2. What is transformer
Ans. 
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two or more coils of insulated wire wound around a core

• Primary coil receives electrical energy and induces a magnetic field in the core

• Secondary coil receives the magnetic field and converts it back into electrical energy

• Used to step up or step down voltage levels in power di
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Q3. What is scada and rtu
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SCADA stands for Supervisory Control and Data Acquisition, while RTU stands for Remote Terminal Unit. SCADA is a system used for monitoring and controlling industrial processes, while RTU is a device that interfaces with sensors and actuators in the field.
• SCADA is a centralized system used to monitor and control processes in industries such as power plants, water treatment facilities, and manufacturing plants.

• RTU is a ...read more
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Q4. Ur projects till now
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Q5. About substation
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Q6. Salary expectation
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Q7. About ur family
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Q8. Ur Salary expectation
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Q9. And doubts regarding the job profile
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Q1. What is power systems,CVT , what is control system, explain one generation plant
Ans. 
Power systems involve the generation, transmission, and distribution of electrical energy. CVT stands for continuously variable transmission. Control systems regulate the behavior of dynamic systems.
• Power systems involve the generation, transmission, and distribution of electrical energy

• CVT stands for continuously variable transmission and is used in vehicles to provide seamless gear shifting

• Control systems regulate th...read more
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