Indian Railways Apperenticeship Interview Questions and Answers

Quantitative, Reasonning, English Grammer

Q1. Basic HR quesion
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Q2. HR Discussion regarding soft skills.
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Q1. What is torque?
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Torque is a measure of the rotational force applied to an object.
• Torque is calculated by multiplying the force applied by the distance from the pivot point.

• It is measured in units such as Newton-meters (Nm) or foot-pounds (ft-lb).

• Torque is essential in understanding the effectiveness of engines and machinery.

• For example, a wrench applying force to loosen a bolt is exerting torque.
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Q2. Explain power factor.
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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) in a circuit.

• It is a number between 0 and 1, with 1 indicating perfect efficiency.

• Low power factor can result in increased energy costs and inefficient use of electrical power.

• Power factor correction can be implemented to improve power factor and...read more
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Q1. What are the differences between a procedure and a function?
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Q2. Write a query to find 3rd highest salary from each department
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Q3. What is synonym.
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Q4. What are the indexes you used ? Diff between bitmap and btree index
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Q1. What is intent?
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Intent is a messaging object used to request an action from another app component.
• Intent is used to start activities, services, and broadcast receivers in Android.

• It can also be used to pass data between components.

• There are two types of intents: explicit intents and implicit intents.

• Explicit intents specify the component to start by name.

• Implicit intents specify the action to perform and let the system find the approp
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Q2. What is work manager?
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Work Manager is an Android Jetpack library used for managing deferrable, asynchronous tasks.
• Work Manager is part of the Android Jetpack library.

• It is used for managing deferrable, asynchronous tasks that need to run even if the app is in the background.

• Work Manager provides various constraints and options for scheduling tasks, such as network availability, charging status, and more.

• It is recommended for tasks that are ...read more
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Q1. Internal working of Hashmap
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HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap uses hashing to store and retrieve key-value pairs

• It uses an array of linked lists to handle collisions

• The key's hash code is used to determine the index in the array where the key-value pair is stored

• HashMap allows one null key and multiple null values

• Example: HashMap<String, Integer> map = new
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Q2. Difference between string builder and string buffer
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String builder is not synchronized, faster but not thread-safe. String buffer is synchronized, slower but thread-safe.
• String builder is faster due to lack of synchronization, suitable for single-threaded environments.

• String buffer is slower due to synchronization, suitable for multi-threaded environments.

• Example: StringBuilder sb = new StringBuilder(); StringBuffer sbf = new StringBuffer();
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Q1. Why would you like to join us
Ans. 
I am passionate about developing innovative applications and believe in the mission of your company.
• Excited about the opportunity to work on cutting-edge technologies

• Aligned with the company's values and goals

• Seeking a challenging and dynamic work environment

• Impressed by the company's reputation and success stories
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Q2. Expected CTC and current CTC
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Q1. Basics of SQL and pl sql
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Q2. About project tht you worked
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Q1. Java ,SQL,linix question
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Q1. Easy Interview, All about Spring Boot Microservices, Rest controller, Feign client, rest Template, Asynchronous calls
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Q2. Angular Framework Interceptors, AWS Cloud deployment and strategies
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Q1. Asked all java 8, spring boot and cpding questions
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Q1. What is partial Class? out v/s ref ?
Ans. 
Partial class allows a class to be split into multiple files. 'out' passes a variable by reference, 'ref' requires it to be initialized.
• Partial class allows a class to be split into multiple files for easier organization.

• 'out' keyword is used to pass a variable by reference, allowing the method to modify its value.

• 'ref' keyword is used to pass a variable by reference, but it must be initialized before being passed to t
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Q2. SQL questions like how to imrpve performace of Stored procedure
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