Daramic Battery Separator India Senior Slitting Operator Interview Questions and Answers

Basic Questions of Electrical and some reasoning related questions

Q1. Asking me about previous job and Gate related questions
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Q1. If you are experience holder then related to you profile.
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Q2. If you are beginners then related to your field.
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Q1. Transformer principle
Ans. 
Transformer principle involves electromagnetic induction to transfer electrical energy between two or more circuits.
• Transformers work based on Faraday's law of electromagnetic induction.

• They consist of primary and secondary coils wound around a core.

• Step-up transformers increase voltage while step-down transformers decrease voltage.

• Efficiency of transformers is determined by the ratio of output power to input power.

• Tra...read more
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Q2. Motor dc and ac
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Q3. Capacitor inductor resistance
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Normal electrical basic question asking and some regioning quetion also askin aptitude test.

Q1. Basic of transformer
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Q2. Igbt working process
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IGBT stands for Insulated Gate Bipolar Transistor, a semiconductor device used for switching applications in power electronics.
• IGBT combines the advantages of MOSFETs and bipolar transistors

• It has three terminals: gate, collector, and emitter

• Works by controlling the voltage applied to the gate terminal to switch the device on and off

• Used in applications like motor drives, inverters, and power supplies
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Q3. Scr working process
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SCR (Silicon Controlled Rectifier) is a semiconductor device used for controlling large amounts of electrical power.
• SCR is a type of thyristor used in power control applications.

• It consists of four layers of alternating N and P-type material.

• SCR works by controlling the flow of current between the anode and cathode.

• It requires a trigger signal to turn on and start conducting.

• Once triggered, SCR will continue to conduct...read more
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Q4. Bridge rectifier working process
Ans. 
A bridge rectifier is a type of full-wave rectifier that converts AC to DC by using four diodes in a bridge configuration.
• Bridge rectifier uses four diodes to convert AC to DC.

• It rectifies both halves of the AC input waveform.

• The output voltage is the absolute value of the input voltage.

• Commonly used in power supplies and battery chargers.
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Q5. Symbols of diode scr igbt thyristor
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Symbols of diode, SCR, IGBT, and thyristor are important for understanding and troubleshooting electronic circuits.
• Diode symbol: Arrow pointing towards a line representing the cathode

• SCR symbol: Three layers with a gate, anode, and cathode

• IGBT symbol: Combination of a MOSFET and a bipolar transistor

• Thyristor symbol: Similar to SCR but with an additional gate terminal
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Mathematics, reasoning

Q1. Electric and electronic
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Q2. Resistor calculation- series/parralal
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Q3. Unit of capacitance, inductance
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Capacitance is measured in farads (F) and inductance is measured in henrys (H).
• Capacitance is the ability of a component to store electrical charge, measured in farads (F)

• Inductance is the ability of a component to store energy in a magnetic field, measured in henrys (H)

• Examples: Capacitors have capacitance measured in farads, while inductors have inductance measured in henrys
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Q4. Motor work, different electrical symbol
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Q1. Salary expectation
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Totel 25 questions were asked in exam.which 20 questions were from electrical engineering and 5 questions were from math and reasoning.

Q1. From induction motor Unit of electrical terms From transducers lvdt Vfd
Ans. 
Unit of electrical terms for induction motor include voltage, current, power factor. LVDT transducers measure displacement. VFD stands for Variable Frequency Drive.
• Unit of electrical terms for induction motor: voltage, current, power factor

• LVDT transducers measure displacement

• VFD stands for Variable Frequency Drive
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Q1. Basic trade questions only
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Q1. Normal hr questions only
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Q1. How to reduce resistance for transformer
Ans. 
To reduce resistance in a transformer, one can use low resistance materials, increase the cross-sectional area of the winding, and minimize the length of the winding.
• Use low resistance materials for the transformer windings

• Increase the cross-sectional area of the winding to reduce resistance

• Minimize the length of the winding to reduce resistance

• Ensure proper insulation to avoid any short circuits

• Maintain proper cooling
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