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Medha Servo Drives Interview Questions and Answers
55 Interview questions
A full wave rectifier converts AC to DC using diodes, allowing current to flow in both halves of the AC cycle.
Uses two or four diodes in a bridge configuration.
Inverts the negative half of the AC signal to positive.
Results in a smoother DC output compared to half-wave rectifiers.
Commonly used in power supplies for electronic devices.
A 12 K resistor has a color code of red, black, orange, and gold indicating its value and tolerance.
The first band (red) represents the first digit: 2.
The second band (black) represents the second digit: 0.
The third band (orange) indicates the multiplier: 10^3 (or 1000).
Combining these gives 20 x 1000 = 20,000 ohms, but for a 12K resistor, we consider the tolerance.
The fourth band (gold) indicates a tolerance of ±...
Design a circuit to convert 72 V DC to a stable 5 V DC output using a voltage regulator.
Use a step-down transformer to reduce voltage if AC input is available.
Implement a linear voltage regulator (e.g., LM7805) for stable 5 V output.
Consider using a buck converter for higher efficiency in DC-DC conversion.
Add filtering capacitors to smooth out the output voltage.
Ensure proper heat dissipation for components handli...
A full adder can be implemented using 2 universal gates: NAND or NOR.
A full adder has three inputs: A, B, and Carry-in (Cin).
It produces two outputs: Sum and Carry-out (Cout).
Using NAND gates, a full adder can be constructed with 4 NAND gates.
Using NOR gates, a full adder can also be constructed with 6 NOR gates.
Universal gates can create any logic function, including adders.
Potential difference, or voltage, is the work done per unit charge to move a charge between two points in an electric field.
Measured in volts (V), it indicates the energy difference between two points.
Example: A battery provides a potential difference that drives current in a circuit.
It can be thought of as the 'pressure' that pushes electric charges through a conductor.
In a circuit, higher potential difference re...
MESH and NODAL analysis are techniques used in circuit analysis to determine currents and voltages in electrical networks.
MESH Analysis: Uses Kirchhoff's Voltage Law (KVL) to write equations for closed loops in a circuit.
Example: In a simple circuit with two loops, apply KVL to each loop to find unknown currents.
NODAL Analysis: Uses Kirchhoff's Current Law (KCL) to write equations at circuit nodes.
Example: In a ci...
Logic gates are fundamental building blocks of digital circuits, performing basic logical functions based on input values.
AND Gate: Outputs true (1) only if both inputs are true. Example: A=1, B=1 -> Output=1.
OR Gate: Outputs true if at least one input is true. Example: A=0, B=1 -> Output=1.
NOT Gate: Inverts the input value. Example: A=0 -> Output=1.
NAND Gate: Outputs false only if both inputs are true. E...
Rectifiers convert AC to DC and come in various types, each with unique operational characteristics.
1. Half-Wave Rectifier: Uses one diode to allow only one half of the AC waveform, resulting in pulsating DC. Example: Simple power supply circuits.
2. Full-Wave Rectifier: Utilizes two diodes or a bridge configuration to convert both halves of the AC waveform into DC. Example: Bridge rectifier circuits.
3. Center-Tapp...
Understanding resistor calculations in series and parallel circuits is essential for effective circuit design and troubleshooting.
In series, resistors add up: R_total = R1 + R2 + R3. Example: R1=2Ω, R2=3Ω, R_total=5Ω.
In parallel, the total resistance is found using: 1/R_total = 1/R1 + 1/R2 + 1/R3. Example: R1=2Ω, R2=3Ω, R_total=1.2Ω.
Series circuits have the same current flowing through all components, while parall...
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).
Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.
Example: Function overlo...
Medha Servo Drives Interview Experiences
79 interviews found
Anonymous
Selected
I applied via Naukri.com and was interviewed in Dec 2024. There were 3 interview rounds.
Mathematics, reasoning
(4 Questions)
- Q1. Electric and electronic
- Q2. Resistor calculation- series/parralal
- Ans.
Understanding resistor calculations in series and parallel circuits is essential for effective circuit design and troubleshooting.
In series, resistors add up: R_total = R1 + R2 + R3. Example: R1=2Ω, R2=3Ω, R_total=5Ω.
In parallel, the total resistance is found using: 1/R_total = 1/R1 + 1/R2 + 1/R3. Example: R1=2Ω, R2=3Ω, R_total=1.2Ω.
Series circuits have the same current flowing through all components, while parallel ci...
- Q3. Unit of capacitance, inductance
- Ans.
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
- Q4. Motor work, different electrical symbol
(1 Question)
- Q1. Salary expectation
Interview Preparation Tips
(2 Questions)
- Q1. If you are experience holder then related to you profile.
- Q2. If you are beginners then related to your field.
Interview Preparation Tips
Selected
I applied via Campus Placement
(2 Questions)
- Q1. What is polymorphism?
- Ans.
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).
Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.
Example: Function overloading...
- Q2. Design a 3 but up/down counter?
- Ans.
A 3-bit up/down counter can be designed using flip-flops and logic gates.
Use 3 D flip-flops to store the count value.
Connect the Q output of each flip-flop to the D input of the next flip-flop.
Use logic gates to control the direction of counting (up or down).
Selected
I applied via Recruitment Consulltant and was interviewed in Sep 2024. There was 1 interview round.
(5 Questions)
- Q1. I am study complete iti
- Q2. But and study appearing
- Q3. I am Rahul kumar
- Q4. My father name sujit kumar
- Q5. I live at korbaddha Samastipur Bihar
Interview Preparation Tips
Selected
I appeared for an interview in Jun 2025, where I was asked the following questions.
- Q1. What is u r strength?
- Ans.
My strength lies in my technical skills, problem-solving abilities, and strong work ethic, enabling me to excel in challenging situations.
Technical Skills: Proficient in troubleshooting and repairing electronic devices, ensuring minimal downtime.
Problem-Solving: Successfully resolved a recurring issue in equipment that improved efficiency by 20%.
Adaptability: Quickly learned new software tools to enhance workflow and p...
- Q2. Your good hobbies?
- Ans.
I enjoy various hobbies that enhance my skills and provide relaxation, such as photography, hiking, and reading technical books.
Photography: Capturing nature and urban landscapes helps me develop an eye for detail.
Hiking: Exploring trails keeps me physically active and connected to nature.
Reading: I often read technical books to stay updated on industry trends and improve my knowledge.
- Q3. Tell me u r self in one sentence ?
- Ans.
I am a dedicated technician with a passion for problem-solving and a strong background in technical support and maintenance.
Experienced in troubleshooting hardware and software issues, such as fixing network connectivity problems.
Skilled in performing routine maintenance on equipment, ensuring optimal performance and longevity.
Strong communicator, able to explain technical concepts to non-technical users, enhancing use...
- Q4. Your family backgrounds?
- Ans.
I come from a supportive family that values education and hard work, which has greatly influenced my career path.
My parents are both educators, instilling a love for learning in me from a young age.
I have a sibling who is also in the technical field, providing a collaborative environment for growth.
Family gatherings often involve discussions about our careers, encouraging us to share knowledge and experiences.
My family...
Interview Preparation Tips
Selected
I appeared for an interview in Oct 2024.
Total 25marks test
20marks from core subjects
5marks for reasoning
(2 Questions)
- Q1. What is the project made in diploma final year?
- Ans.
The project made in diploma final year was an electromagnetic wave detector using Arduino and RF module.
Designed circuit using Arduino and RF module to detect electromagnetic waves
Implemented code to analyze and display the intensity of detected waves
Tested the device in different environments to ensure accuracy
Presented findings and project at final year exhibition
- Q2. Tell me about yourself?
(3 Questions)
- 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...
- Q2. Motor dc and ac
- Q3. Capacitor inductor resistance
- Q1. Sample Question: Design a circuit to get a 5 V DC output whether input supply is 72 V DC.
- Ans.
Design a circuit to convert 72 V DC to a stable 5 V DC output using a voltage regulator.
Use a step-down transformer to reduce voltage if AC input is available.
Implement a linear voltage regulator (e.g., LM7805) for stable 5 V output.
Consider using a buck converter for higher efficiency in DC-DC conversion.
Add filtering capacitors to smooth out the output voltage.
Ensure proper heat dissipation for components handling hi...
- Q2. Sample Question: Explain the colour code of a 12 K resistor with 5% tolerance.
- Ans.
A 12 K resistor has a color code of red, black, orange, and gold indicating its value and tolerance.
The first band (red) represents the first digit: 2.
The second band (black) represents the second digit: 0.
The third band (orange) indicates the multiplier: 10^3 (or 1000).
Combining these gives 20 x 1000 = 20,000 ohms, but for a 12K resistor, we consider the tolerance.
The fourth band (gold) indicates a tolerance of ±5%.
- Q3. Sample Question: Draw full wave rectifier
- Ans.
A full wave rectifier converts AC to DC using diodes, allowing current to flow in both halves of the AC cycle.
Uses two or four diodes in a bridge configuration.
Inverts the negative half of the AC signal to positive.
Results in a smoother DC output compared to half-wave rectifiers.
Commonly used in power supplies for electronic devices.
(3 Questions)
- Q1. What is the fitter
- Ans.
A fitter is a skilled technician who is responsible for assembling, installing, and maintaining machinery and equipment.
Fitters read and interpret blueprints and technical drawings
They use a variety of hand and power tools to assemble parts
Fitters may also be responsible for troubleshooting and repairing machinery
Examples: automotive fitters, industrial machinery fitters
- Q2. What is the wrok shop
- Ans.
The workshop is a space where technicians work on machinery, equipment, or vehicles to repair, maintain, or fabricate parts.
Workshop is equipped with tools and machinery for various tasks.
Technicians use hand tools, power tools, and specialized equipment.
Tasks in the workshop include assembly, disassembly, repair, maintenance, and fabrication of parts.
Examples of workshops include automotive repair shops, machine shops...
- Q3. A person who puts together or installs machinery,engine parts,or other equipment a qualified gas fitter
- Ans.
A gas fitter is a person who assembles and installs machinery, engine parts, or other equipment related to gas systems.
Gas fitters are responsible for installing, maintaining, and repairing gas appliances and systems.
They must have knowledge of gas regulations and safety standards.
Gas fitters may work in residential, commercial, or industrial settings.
Examples of equipment they work on include gas stoves, water heaters...
Interview Preparation Tips
K Sidhi Sree
(1 Question)
- Q1. Gate exam type questions from networks, op amp, digitals, C language, 8051,8086
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