ITD Cementation India Electrical Maintenance Interview Questions and Answers

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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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
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Q2. Question based on series and parallel resistance
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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
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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
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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
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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.
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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
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12 th & Electricale Engineer Diploma

Q1. Working with the safety of all the colleagues working with you and your own safety.
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Q2. Be it any machinery or any part-time job, keep it safe.
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Q3. Doing the work as instructed by your senior.
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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
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
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