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JCB Diploma Electrical Engineer Interview Questions and Answers
JCB Diploma Electrical Engineer Interview Experiences
1 interview found
Selected
I applied via Campus Placement and was interviewed before May 2023. There were 2 interview rounds.
Math, English, Grammar
(3 Questions)
- Q1. What is frequency
- Ans.
Frequency is the number of occurrences of a repeating event per unit of time.
Frequency is measured in Hertz (Hz).
It is commonly used in electrical engineering to describe the rate at which alternating current changes direction.
Higher frequency signals can carry more data but may have shorter range.
Examples of frequency include 50 Hz for power supply in Europe and 60 Hz in the United States.
- Q2. What is difference between fuse and Mcb
- Ans.
A fuse is a one-time use device that melts when there is an overload, while an MCB is a reusable device that trips when there is an overload.
Fuse is a one-time use device, while MCB is reusable
Fuse needs to be replaced after it melts, MCB can be reset
Fuse operates on the principle of thermal or electrical melting, MCB operates on the principle of electromagnetism
Fuse is slower in response time compared to MCB
Examples:
- Q3. What is capacitor
- Ans.
A capacitor is an electronic component that stores electrical energy in an electric field.
Capacitors consist of two conductive plates separated by an insulating material called a dielectric.
Capacitors are commonly used in electronic circuits to store and release electrical energy.
They are used for filtering, smoothing, timing, tuning, and power factor correction in electrical systems.
Examples of capacitors include cera...
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Selected
I applied via Campus Placement and was interviewed in Feb 2024. There was 1 interview round.
(2 Questions)
- Q1. Which liquid is in use battery
- Ans.
The liquid in use in a battery is typically an electrolyte solution.
The most common liquid used in batteries is sulfuric acid.
Other types of batteries may use different electrolyte solutions, such as lithium-ion batteries using lithium salts in organic solvents.
The electrolyte solution allows for the flow of ions between the battery's electrodes, facilitating the chemical reactions that generate electrical energy.
- Q2. Sulfuric acid (H2SO4)
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- Mechanical Engineering
Diploma Electronics Engineer Interview Questions & Answers
LG Electronics
Anonymous
posted on 21 Aug 2023
Selected
I applied via Campus Placement and was interviewed in Jul 2023. There were 2 interview rounds.
(4 Questions)
- Q1. Active components
- Q2. Passive components
- Q3. Signal there are two types
- Q4. (1) Analog signal definition
- Ans.
An analog signal is a continuous signal that represents information using a continuous range of values.
Analog signals can take on any value within a continuous range.
Examples of analog signals include voltage, current, and sound waves.
Analog signals are used in many electronic devices such as radios and televisions.
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Selected
(1 Question)
- Q1. Question related yo my trade of diploma
(1 Question)
- Q1. About course related subjects
Selected
I applied via Job Portal
(4 Questions)
- Q1. Electrical motors and transformer
- Q2. Transformer ct pt
- Q3. Ac current and DC
- Q4. All topics electrical
Interview Preparation Tips
I applied via campus placement at AL-Kabir Polytechnic, Jamshedpur and was interviewed in Jun 2022. There were 3 interview rounds.
Mechanical Questions Aptitude Test
(2 Questions)
- Q1. Working Principle of Air Conditioning System, Refrigeration and Air Conditioning.
- Ans.
Air conditioning and refrigeration systems work on the principle of heat transfer and phase change of refrigerant.
Air conditioning system cools and dehumidifies air in a room or building.
Refrigeration system removes heat from a space and transfers it to the outside environment.
Both systems use a refrigerant to absorb and release heat through phase change.
Air conditioning system uses a compressor, evaporator, condenser,...
- Q2. Describe Vapour Compression Refrigeration System.
- Ans.
Vapour Compression Refrigeration System is a common refrigeration system used in air conditioning and refrigeration applications.
It works by compressing refrigerant vapor to increase its temperature and pressure.
The high-pressure vapor then condenses into a liquid, releasing heat.
The liquid refrigerant then passes through an expansion valve, where it evaporates and cools the surrounding area.
The low-pressure vapor is t...
(1 Question)
- Q1. Introduction About you Family and educations, Last employment,etc
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I love work with Daikin Family.
Thank you.
Selected
I applied via Referral and was interviewed in Aug 2022. There were 4 interview rounds.
Normal technical based questions
(1 Question)
- Q1. Total diploma based questions
(1 Question)
- Q1. This about my family background and my goal and etc
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Mechanical Questions Type Aptitude Test.
(2 Questions)
- Q1. Working Principle of Air Conditioning System.
- Ans.
Air conditioning systems work by removing heat from indoor air and transferring it outside, cooling the air in the process.
Air conditioning systems use refrigerant to absorb and release heat, allowing for the transfer of heat from inside to outside.
The refrigerant circulates through a closed loop system of coils, compressors, and fans to cool and dehumidify the air.
The cooled air is then distributed throughout the buil...
- Q2. Describe Vapour Compression Refrigeration System.
- Ans.
Vapour Compression Refrigeration System is a common method used for cooling in various applications.
Consists of four main components: compressor, condenser, expansion valve, and evaporator
Refrigerant circulates through the system, changing from liquid to vapor and back to liquid
Compressor increases the pressure and temperature of the refrigerant vapor
Condenser removes heat from the refrigerant vapor, causing it to cond...
(1 Question)
- Q1. About our Family Details, Last Employment, etc
I applied via Campus Placement and was interviewed in Apr 2021. There were 4 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Define one cycle of refrigeration with thermodynamic processes?
- Ans.
Refrigeration cycle involves four thermodynamic processes: compression, condensation, expansion, and evaporation.
The refrigerant is compressed by a compressor, increasing its temperature and pressure.
The high-pressure refrigerant then flows through a condenser, where it releases heat and condenses into a liquid.
The liquid refrigerant then passes through an expansion valve, where it undergoes a pressure drop and becomes...
- Q2. Explain the functions of parts of the Air Conditioner.
- Ans.
The functions of parts of an Air Conditioner include cooling, dehumidifying, filtering, and circulating air.
Compressor: compresses and circulates refrigerant to cool the air
Condenser: releases heat from the refrigerant to the outside air
Evaporator: absorbs heat from the air and cools it down
Expansion valve: regulates the flow of refrigerant into the evaporator
Fan: circulates the air over the evaporator and condenser co...
- Q3. Basic HR Questions.
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I applied via Campus Placement and was interviewed before Sep 2020. There were 4 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Explain me about color coding?
- Ans.
Color coding is a system of using colors to convey information or identify objects, wires, or components.
Color coding is widely used in various industries such as electrical, electronics, telecommunications, and automotive.
It helps in quickly identifying and distinguishing between different objects or components.
Color coding can be used to indicate the value or type of a component, the function of a wire, or the status...
- Q2. Tell us about noise filter circuit?
- Ans.
A noise filter circuit is used to remove unwanted noise from a signal.
It is a type of electronic filter that attenuates or removes noise from a signal
It can be implemented using passive components like resistors, capacitors, and inductors
Active components like operational amplifiers can also be used to design noise filter circuits
Examples include low-pass filters, high-pass filters, band-pass filters, and notch filters
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