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I applied via Walk-in and was interviewed before Feb 2021. There was 1 interview round.
The question covers topics related to electrical circuits and devices.
Star delta starter is used to reduce the starting current of induction motors.
Types of DC generators include shunt, series, and compound generators.
Tube light connection circuit involves connecting the starter, choke, and tube light in series.
Two-way switch connection is used to control a single light or group of lights from two different locations.
The answer includes information about types of starters, star delta connection, types of transformers, working of bukols relay, and types of DC motors.
Types of starters include direct-on-line starter, star delta starter, auto transformer starter, and resistance starter.
Star delta starter is used to reduce the starting current of induction motors.
Star delta starter circuit diagram consists of three contactors, a timer, ...
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A contractor is a person or company hired to perform a specific task or project for a client.
Contractors are often hired for construction projects, electrical work, plumbing, and other specialized tasks.
They are typically paid on a project-by-project basis, rather than receiving a salary or hourly wage.
Contractors may work independently or as part of a larger company.
They are responsible for providing their own tools, ...
A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).
Rectifiers are commonly used in power supplies for electronic devices.
They can be made using diodes or other semiconductor devices.
Rectifiers are essential for many electronic devices to function properly.
Examples of rectifiers include bridge rectifiers, half-wave rectifiers, and full-wave rectifiers.
vvF is not a recognized term in the field of electrical engineering.
vvF is not a standard unit of measurement or abbreviation in the electrical field.
It is possible that the interviewer made a mistake or was testing the candidate's ability to admit when they don't know something.
The candidate could respond by politely asking for clarification or admitting that they are not familiar with the term.
I applied via Naukri.com and was interviewed before Mar 2021. There were 2 interview rounds.
I applied via Company Website and was interviewed in Jan 2022. There were 3 interview rounds.
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I applied via Company Website and was interviewed in Sep 2023. There was 1 interview round.
Reverse forward with drive is a control method used in electrical systems to change the direction of rotation of a motor.
Reverse forward with drive is achieved by using a motor controller that can switch the polarity of the motor's power supply to change its direction of rotation.
This method is commonly used in applications where the motor needs to be able to run in both forward and reverse directions, such as in conve...
Power and control wiring of EOT crane involves connecting electrical components to ensure proper functioning.
Power wiring includes connecting the main power supply to the crane motor and other electrical components.
Control wiring involves connecting control devices such as push buttons, limit switches, and relays to control the movement of the crane.
Proper labeling and color-coding of wires is essential for easy troubl...
posted on 16 Aug 2024
I applied via Naukri.com and was interviewed in Feb 2024. There was 1 interview round.
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Consists of primary and secondary coils
Changes voltage levels (step-up or step-down)
Used in power distribution systems
Examples: power transformers, distribution transformers
CRO stands for Cathode Ray Oscilloscope, a device used to display and analyze the waveform of electrical signals.
CRO is commonly used by electricians and engineers to troubleshoot electrical circuits.
It displays voltage waveforms in real-time, allowing users to identify issues such as voltage spikes or distortions.
CROs are essential tools for testing and measuring electronic equipment.
Example: A CRO can be used to anal...
A motor is a device that converts electrical energy into mechanical energy to produce motion.
Motors are commonly used in various applications such as industrial machinery, household appliances, and vehicles.
There are different types of motors including AC motors, DC motors, and servo motors.
Motors consist of a rotor and a stator, with the rotor rotating when electrical current is applied.
Examples of motors include elec...
Ohm
Unit of resistance in electrical circuits
Symbol is Ω (omega)
Named after German physicist Georg Simon Ohm
Measured using an ohmmeter
The unit of current is Ampere (A)
The unit of current is Ampere (A)
Current is the flow of electric charge in a circuit
1 Ampere is equal to 1 Coulomb per second
Commonly used prefixes for current are milliampere (mA) and microampere (μA)
MCB and DOL starter are both electrical devices used for protection and control, but they have different functions and applications.
MCB stands for Miniature Circuit Breaker and is used for circuit protection against overcurrents and short circuits.
DOL starter stands for Direct-On-Line starter and is used for starting and stopping motors.
MCB is a switch that automatically trips and disconnects the circuit when an overcu...
An electrical motor is a device that converts electrical energy into mechanical energy to perform work.
Electrical motors are used in various applications such as industrial machinery, household appliances, and vehicles.
They work on the principle of electromagnetic induction, where a current-carrying conductor experiences a force in the presence of a magnetic field.
There are different types of electrical motors, includi...
Power factor is a measure of how effectively electrical power is being used in a circuit.
Power factor is the ratio of real power (in watts) to apparent power (in volt-amperes).
It indicates the efficiency of electrical power consumption in a circuit.
A power factor of 1 means all the power is being used effectively, while a power factor less than 1 indicates wastage of power.
Inductive loads like motors and transformers h...
A DOL starter circuit diagram is used to control the starting and stopping of an electric motor.
DOL stands for Direct-On-Line.
The circuit consists of a contactor, overload relay, and start and stop buttons.
When the start button is pressed, the contactor closes and power is supplied directly to the motor.
The overload relay protects the motor from excessive current.
The stop button opens the contactor and stops the motor.
The sources of electricity include fossil fuels, nuclear power, renewable energy sources, and batteries.
Fossil fuels such as coal, oil, and natural gas are commonly used to generate electricity in power plants.
Nuclear power plants use nuclear reactions to produce electricity.
Renewable energy sources like solar power, wind power, hydroelectric power, and geothermal power can generate electricity.
Batteries can store and
Insulators are materials that do not conduct electricity.
Insulators are substances that prevent the flow of electric current.
They have high resistance to the flow of electrons.
Insulators are used to protect against electric shocks and to prevent short circuits.
Examples of insulators include rubber, plastic, glass, and ceramic.
Insulators are commonly used in electrical wiring, circuit boards, and electrical equipment.
Semiconductors are used in various electronic devices and systems.
Semiconductors are used in computers and other digital devices for processing and memory.
They are used in telecommunication systems for signal amplification and transmission.
Semiconductors are used in power electronics for controlling and converting electrical energy.
They are used in lighting systems such as LEDs and OLEDs.
Semiconductors are used in sens...
Resistance is the measure of opposition to the flow of electric current in a material.
Resistance is measured in ohms (Ω).
It is caused by the collisions of electrons with atoms and other electrons in the material.
Resistance can be influenced by factors such as temperature, length, and cross-sectional area of the material.
Ohm's Law states that the current flowing through a conductor is directly proportional to the voltag...
The unit of resistance is ohm (Ω).
The unit of resistance is named after the German physicist Georg Simon Ohm.
Resistance is a measure of how much a material or device opposes the flow of electric current.
The symbol for ohm is the Greek letter omega (Ω).
Resistance can be calculated using Ohm's Law: R = V/I, where R is resistance, V is voltage, and I is current.
Common examples of resistance include resistors, light bulbs,
AC and DC shocks can both be dangerous, but AC shocks are generally considered more dangerous.
AC shocks can cause muscle contractions, making it difficult to let go of the source of the shock.
AC shocks can also cause ventricular fibrillation, a potentially fatal condition where the heart's rhythm becomes irregular.
DC shocks are more likely to cause burns and tissue damage at the point of contact.
However, the severity o...
Most iti electrician interview questions
Cable is a bundle of insulated conductors used for transmitting electrical power or signals.
Cable is made up of multiple conductors that are insulated and bundled together.
Conductors are materials that allow the flow of electric current.
Cables are used for various applications such as power transmission, telecommunications, and data transfer.
Examples of cables include electrical power cables, Ethernet cables, and coaxi
Meger is a term used in electrical engineering to refer to the process of combining two or more electrical circuits or systems.
Meger involves connecting the circuits or systems together to create a single, unified system.
It is commonly used when expanding or upgrading electrical systems.
Meger can be done by connecting the positive terminals of the circuits together and the negative terminals together.
For example, when ...
Earthing and grounding are electrical safety measures that involve connecting electrical systems to the ground.
Earthing is the process of connecting the metallic parts of an electrical system to the earth to prevent electric shock.
Grounding is the process of connecting electrical equipment to the ground to protect against electrical faults and lightning strikes.
Earthing and grounding provide a path for electrical curre...
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