Electrostar Electronics Electrical Maintenance Engineer Interview Questions and Answers

Q1. On your branch to trade and basic knowledge
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Q2. Family background your hobbies
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Q1. Basically question on electrical engineering
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Q1. Why you left your present job
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Q1. Company sai related
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Q2. Technical questions
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Q3. Nokia company sai related questions
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Q4. About the machine
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Q5. Nokia sai similar
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Q6. Company sai similar
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Q1. What is a control system of electric painal?
Ans. 
A control system of an electric panel is a system that regulates and manages the operation of electrical components within the panel.
• Control systems in electric panels can include programmable logic controllers (PLCs) to automate processes.

• They can also involve relays, switches, and sensors to monitor and control the flow of electricity.

• Control systems ensure the safety, efficiency, and functionality of the electric pa...read more
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Q2. What is a faction of plc.
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A faction of PLC refers to a portion of the programmable logic controller that performs a specific function.
• A faction of PLC is a subset of the overall PLC system

• Each faction is responsible for carrying out a specific task or operation

• Examples of factions include input modules, output modules, and communication modules
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Q3. Plc act the physical interfaces between devices on the plant and manufacturing flore and scada or hmi systam. Control communicate monitor and control complex automated
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Q1. Electrical and Instrument work Tecnical issue calibration of instruments E.T.C
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Calibration of instruments is a crucial aspect of electrical and instrument work for maintenance engineers.
• Calibration ensures accuracy and reliability of instruments.

• Regular calibration prevents errors and ensures proper functioning of equipment.

• Calibration involves adjusting the instrument to match a known standard or reference.

• Examples of instruments that require calibration include pressure gauges, temperature sens
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Q2. Document work DQ,IQ,OQ and USFDA work in plant
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Q3. Power plant Electrical power generation, distribution E.T.C
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Q4. SAP PM moduleand Excel,MS Word
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Q1. Selery related questions
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Q1. What is an ideal transformer
Ans. 
An ideal transformer is a theoretical transformer with no losses and perfect efficiency.
• An ideal transformer has no resistance, leakage inductance, or core losses.

• It has a turns ratio that perfectly converts voltage and current from primary to secondary windings.

• Efficiency is 100% in an ideal transformer.

• Real transformers have losses due to resistance, eddy currents, and hysteresis.
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Q2. Relation between kva and kw
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kVA is the apparent power, while kW is the real power. The relationship between them is determined by the power factor.
• kVA is the product of voltage and current in a circuit, while kW is the actual power consumed by the load.

• The relationship between kVA and kW is determined by the power factor of the load.

• Power factor = kW / kVA. A power factor of 1 indicates all power is being used efficiently.

• For example, if a load h...read more
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Q1. Fitter maintenance
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Q2. Fitter maintenance experience
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I have 5 years of experience as a Maintenance Fitter in a manufacturing plant.
• Performed routine maintenance on machinery and equipment

• Diagnosed and repaired mechanical issues

• Implemented preventative maintenance schedules

• Collaborated with other team members to troubleshoot complex problems
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Am Rupesh Kumar am now staying in delahi from Bihar araria

Q1. What is the series motor
Ans. 
A series motor is a type of electric motor where the field windings are connected in series with the armature windings.
• The torque of a series motor is proportional to the square of the current flowing through it.

• Series motors are used in applications where high starting torque is required, such as in electric trains and cranes.

• They are not suitable for applications where constant speed is required, as their speed varie...read more
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Q2. What are the different between universal motor and series motor?
Ans. 
Universal motors are used for AC and DC power while series motors are used for DC power only.
• Universal motors have a high starting torque and can operate at high speeds, making them suitable for appliances like vacuum cleaners and power tools.

• Series motors have a high starting torque and can operate at low speeds, making them suitable for applications like electric trains and cranes.

• Universal motors have brushes that w...read more
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Q3. How many types of transformer
Ans. 
There are several types of transformers used in electrical engineering.
• Power transformers

• Distribution transformers

• Instrument transformers

• Auto transformers

• Isolation transformers

• Step-up and step-down transformers

• Three-phase transformers

• Toroidal transformers

• Ferrite core transformers

• Air core transformers
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Q4. Explain of step down transformer
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A step-down transformer is a type of transformer that reduces the voltage level from primary to secondary winding.
• It has more turns in the primary winding than in the secondary winding

• It is used to step down the voltage level in power transmission and distribution

• It is commonly used in electronic devices to convert high voltage to low voltage

• Examples include power adapters for laptops and mobile phones
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Q5. What's the compound motor
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A compound motor is a type of electric motor that combines the features of a series motor and a shunt motor.
• It has both a series field winding and a shunt field winding

• It provides high starting torque and good speed regulation

• It is commonly used in applications such as elevators, cranes, and hoists
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