SunSource Energy Electrical Quality Engineer Interview Questions and Answers

Q1. Basic law of governing transformer
Ans. 
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
Ans. 
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
Ans. 
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
Ans. 
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
Ans. 
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.
Ans. 
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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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. 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. CT and PT ampere ?
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Q2. 5 golden rules? Transformer kV ?
Ans. 
5 golden rules for electrical safety. Transformer kV is dependent on load and voltage requirements.
• Always turn off power before working on electrical equipment

• Use proper personal protective equipment

• Regularly inspect and maintain electrical equipment

• Follow lockout/tagout procedures

• Properly train and educate employees on electrical safety

• Transformer kV is determined by load and voltage requirements

• Higher kV transformers...read more
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Work job is working very honest

Q1. What is the process charge of PCC Panel
Ans. 
The process charge of a PCC Panel refers to the electrical load connected to the panel.
• Process charge is the total electrical load connected to the PCC Panel.

• It includes all the equipment and machinery powered by the panel.

• The process charge determines the capacity and rating of the panel.

• Regular monitoring and maintenance of the process charge is essential to ensure optimal performance.

• Examples of process charge inclu...read more
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Q2. What is the process charge of transformer
Ans. 
The process charge of a transformer refers to the amount of electrical energy required to magnetize the core and establish the magnetic field.
• The process charge is necessary to create the magnetic flux in the core of the transformer.

• It is typically measured in kilovolt-amperes (kVA) or kilowatts (kW).

• The process charge is essential for the transformer to function properly and efficiently.

• Examples: A 100 kVA transformer
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Q1. What is your name and where r u from
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Q2. Qualification,and working experience
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Q3. Why do you want to work in utl
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Q1. What is the resistance
Ans. 
Resistance is the opposition to the flow of electric current.
• Resistance is measured in ohms (Ω)

• It is caused by the interaction between electrons and the atoms of a material

• Materials with high resistance are called insulators, while those with low resistance are called conductors

• Resistance can be calculated using Ohm's Law: R = V/I

• Examples of resistors include light bulbs, heating elements, and electronic components
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Q2. What is capacitor and diode
Ans. 
A capacitor is an electronic component that stores energy in an electric field, while a diode is a semiconductor device that allows current to flow in only one direction.
• Capacitors are commonly used in electronic circuits to filter out noise and stabilize voltage.

• Diodes are used in rectifiers, voltage regulators, and signal demodulators.

• Capacitors are measured in farads, while diodes are measured in volts and amperes.
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Q3. What is the transistor
Ans. 
A transistor is a semiconductor device used to amplify or switch electronic signals and power.
• It has three layers of semiconductor material: P-type, N-type, and P-type.

• It can be used as an amplifier to increase the strength of a weak signal.

• It can also be used as a switch to turn a circuit on or off.

• Transistors are commonly used in electronic devices such as computers, radios, and televisions.
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