Tata Steel Junior Web Developer Interview Questions and Answers

Q1. What is lpad and rpad?
Ans. 
lpad and rpad are functions used in SQL to add padding characters to the left or right of a string.
• lpad adds padding characters to the left of a string

• rpad adds padding characters to the right of a string

• Syntax: lpad(string, length, padding_character)

• Example: lpad('123', 5, '0') will result in '00123'

• Syntax: rpad(string, length, padding_character)

• Example: rpad('123', 5, '0') will result in '12300'
Answered by AI
Add your answer

Q1. Can you tell me about yourself?
Add your answer

Q1. Types of welding
Ans. 
Types of welding include MIG, TIG, stick, and flux-cored welding.
• MIG welding uses a wire electrode and shielding gas.

• TIG welding uses a tungsten electrode and inert gas.

• Stick welding uses a consumable electrode coated in flux.

• Flux-cored welding uses a tubular wire filled with flux.

• Other types include spot welding, laser welding, and resistance welding.
Answered by AI
Add your answer
Q2. Engeneering Material also read
Add your answer

Q1. 7Qc tools, 5S, TPM, Kaizen, Root cause, Quality Parameters, SAP Management, Incoming Quality tools
Add your answer

Q1. TPM , 7Qc tools, CAPA
Add your answer

Q1. What is the difference between MCB and overload realy?
Ans. 
MCB and overload relay are both electrical protection devices, but they serve different purposes.
• MCB stands for Miniature Circuit Breaker and is used to protect electrical circuits from overcurrents and short circuits.

• Overload relay is used to protect motors and other electrical equipment from excessive current that can cause overheating and damage.

• MCB operates based on the principle of thermal and magnetic tripping, w...read more
Answered by AI
Add your answer
Q2. Working of soft starter?
Ans. 
A soft starter is a device used to gradually start and stop the motor by controlling the voltage applied to it.
• Soft starters are used to reduce the starting current and torque of an electric motor.

• They provide a smooth and controlled acceleration and deceleration of the motor.

• Soft starters can be used in various applications such as pumps, fans, and conveyor belts.

• They typically consist of power electronics, control ci...read more
Answered by AI
Add your answer
Q3. Working of drive?
Ans. 
A drive is a device that reads and writes data to storage media, allowing users to access and store information.
• Drives can be internal or external, such as hard disk drives (HDDs) or solid-state drives (SSDs).

• They use various technologies like magnetic or flash memory to store data.

• Drives are connected to a computer or device through interfaces like SATA, USB, or PCIe.

• They have controllers that manage data transfer and...read more
Answered by AI
Add your answer
Q4. Why we use star delta starter?
Ans. 
Star delta starters are used to reduce the starting current of induction motors.
• Star delta starters are used in applications where the starting current needs to be limited.

• They are commonly used in industries where large motors are employed.

• By starting the motor in star configuration, the current is reduced to one-third of the delta configuration.

• This helps in preventing excessive voltage drop and reduces stress on the...read more
Answered by AI
Add your answer
Q5. What is the protection of transformer?
Ans. 
The protection of a transformer involves various measures to ensure its safe and reliable operation.
• Overcurrent protection: Protects against excessive current flow.

• Overvoltage protection: Guards against high voltage surges.

• Under/over frequency protection: Monitors and controls the frequency of the input power.

• Temperature protection: Prevents overheating by monitoring the transformer's temperature.

• Buchholz relay protect...read more
Answered by AI
Add your answer

Q1. Detatal about the subject in which you are strong
Add your answer
Q2. Proper introduction
Add your answer

Be confident in your answer and no more confusing. Think twice, answer Little bit similar but u have to choose one it has a more accurate. Time management is main. What time you did taken to answer for each question.

Talk short with important matter. Your voice should to audible for all.

Q1. This is related to your study. Befor going to interview first you should know the which type of company that is and what they produce. Go to the deep through it on this basis you have to prepare.
Add your answer
Q2. Sketch the Lathe diagram Stress strain diagram About Boiler About hydraulic system About pneumatic system About engines About machanical properties Project principles About manpower handling
Add your answer

Q1. Electrical basis questions. As that ckt. diagrams of motor satr and delta connection control & power supply.
Add your answer
Q2. Motor megger value & cable size as per rating of motor.
Ans. 
Motor megger value should be at least twice the rated voltage of the motor. Cable size should be selected based on the full load current of the motor.
• Motor megger value should be at least 2 times the rated voltage of the motor to ensure insulation integrity.

• Cable size should be selected based on the full load current of the motor to prevent overheating and voltage drop.

• For example, for a motor rated at 400V, the megger...read more
Answered by AI
Add your answer
Q3. OLR value of motor as per rating of motor & MPCB rating.
Ans. 
OLR value of a motor is determined by the rating of the motor and the MPCB rating.
• OLR value is the Overload Relay value, which is used to protect the motor from overload conditions.

• The OLR value is typically set based on the rating of the motor and the rating of the Motor Protection Circuit Breaker (MPCB).

• For example, if a motor has a rating of 5 HP and the MPCB rating is 10A, the OLR value would be calculated accordin
Answered by AI
Add your answer