BGR Energy Systems Deputy Manager-Electrical Interview Questions and Answers

General knowlegde, Basic Aptitude, Domain Technical MCQ

Genx vs Genz, Altitude and comparsion

Q1. Components of Transformer
Ans. 
Components of a transformer include core, windings, and insulation.
• Core: Provides a path for magnetic flux

• Windings: Primary and secondary coils for inducing voltage

• Insulation: Prevents short circuits and ensures safety
Answered by AI
Add your answer
Q2. Question based on series and parallel resistance
Add your answer

Q1. Why do you want to do job?
Add your answer
Q2. Why have you joined Electronics?
Add your answer
Q3. What is Ohm's law?
Ans. 
Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
• Ohm's law is represented by the equation I = V/R, where I is the current, V is the voltage, and R is the resistance.

• It is named after Georg Simon Ohm, a German physicist who first formulated this law.

• This law is applicable to all types of circuits, including DC and AC circuits.

• It is use...read more
Answered by AI
Add your answer

Q1. What is CT and PT
Ans. 
CT stands for Current Transformer and PT stands for Potential Transformer. They are used in electrical systems for measurement and protection purposes.
• CT is used to measure current in high voltage circuits by stepping down the current to a safe level for measurement.

• PT is used to measure voltage in high voltage circuits by stepping down the voltage to a safe level for measurement.

• Both CT and PT are essential components...read more
Answered by AI
Add your answer
Q2. What is DTC structure
Ans. 
DTC structure stands for Direct Torque Control structure, a control method used in AC motor drives for precise torque and speed control.
• DTC structure is a control technique used in AC motor drives to directly control torque and flux without the need for a separate speed controller.

• It is based on the principle of controlling the torque and flux by selecting the appropriate voltage vectors in the motor.

• DTC structure offe...read more
Answered by AI
Add your answer
Q3. Use of LA, AB switch
Ans. 
LA, AB switch is used in electrical engineering to switch between two different signal sources or destinations.
• LA, AB switch is commonly used in audio and video equipment to switch between different inputs or outputs.

• It allows for easy switching between two different signal sources or destinations without having to physically disconnect and reconnect cables.

• The switch typically has two positions - one for each signal s...read more
Answered by AI
Add your answer

30 questions in 30 minutes question from machine and power system

Q1. Questions from transformer and 3 phase synchronous machine and from internship
Add your answer

Q1. What is phase voltage for 220kv
Ans. 
Phase voltage for 220kV is approximately 127kV.
• Phase voltage is the voltage between any one phase and the neutral point in a three-phase system.

• For a 220kV system, the phase voltage can be calculated using the formula: Phase Voltage = Line Voltage / √3.

• In this case, Line Voltage = 220kV, so Phase Voltage ≈ 220kV / √3 ≈ 127kV.
Answered by AI
View 1 more answer

Q1. What is phase voltage 220kv
Ans. 
Phase voltage 220kV refers to the voltage between any two phases of a three-phase power system.
• Phase voltage is the voltage between any two phases of a three-phase power system

• In a 220kV system, the voltage between any two phases is 220kV

• This voltage is used for transmission of power over long distances

• It is important to note that the voltage between a phase and neutral in a 220kV system is 127kV
Answered by AI
Add your answer

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
Answered by AI
View 1 more answer
Q2. Parts of transformer
Ans. 
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
Answered by AI
View 2 more answers