Minilec Service Engineer Interview Questions, Process, and Tips

Q1. What is reactor transformer?
Ans. 
A reactor transformer is a type of transformer used in power systems to control voltage and current levels.
• It is used to regulate voltage and current levels in power systems.

• It is designed to handle high levels of current and voltage fluctuations.

• It is often used in conjunction with other types of transformers to provide optimal power distribution.

• Examples include step-up and step-down reactors, which increase or decre
Answered by AI
Add your answer
Q2. Asking about previous job experience
Add your answer
Q3. Asking the question from instrument schematic.
Add your answer

Q1. Hall sensor working principle?
Ans. 
Hall sensor detects magnetic field and converts it into a voltage signal.
• Hall sensor is a transducer that detects the presence of a magnetic field.

• It works on the principle of the Hall effect, where a voltage is generated across a conductor when a magnetic field is applied perpendicular to the current flow.

• The voltage generated is proportional to the strength of the magnetic field.

• Hall sensors are used in various appli...read more
Answered by AI
Add your answer

Q1. Whats your expectation?
Add your answer
Q2. Detailed about your self.
Add your answer

Q1. Pahle kya kaam karte the
Add your answer
Q2. Battery main kitne cell hote hai
Add your answer
Q3. Battery ki toc ka full form
Add your answer
Q4. Ocv ka kya matlab hota hai
Add your answer

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
Answered by AI
Add your answer
Q2. Motor dc and ac
Add your answer
Q3. Capacitor inductor resistance
Add your answer

Railways about rail manufacturing

Normal electrical basic question asking and some regioning quetion also askin aptitude test.

Q1. Basic of transformer
Add your answer
Q2. Igbt working process
Ans. 
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
Answered by AI
Add your answer
Q3. Scr working process
Ans. 
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
Answered by AI
Add your answer
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.
Answered by AI
Add your answer
Q5. Symbols of diode scr igbt thyristor
Ans. 
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
Answered by AI
Add your answer

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
Answered by AI
Add your answer

Q1. Basic trade questions only
Add your answer

Q1. Normal hr questions only
Add your answer

Apptitude 05 nos and Technical 20 nos

Q1. HR and Technical Interview Resistance symbol and unit - ohm Inductance symbol and unit -henry
Add your answer
Q2. Capacitance unit , series and parrallel resistance calculator
Add your answer