Defence Research & Development Organisation Summer Intern Interview Questions and Answers

Types of heat exchangers include shell and tube, plate, finned tube, and double pipe.

• Shell and tube heat exchangers are the most common type, with one fluid flowing through tubes and another surrounding them in a shell.

• Plate heat exchangers use plates instead of tubes to separate the fluids and increase heat transfer.

• Finned tube heat exchangers have fins on the tubes to increase surface area and improve heat transfer.

• D...read more

Distillation columns used in industries include fractional distillation columns, vacuum distillation columns, and steam distillation columns.

• Fractional distillation columns are used to separate mixtures based on boiling points, commonly used in oil refineries.

• Vacuum distillation columns are used to distill high boiling point compounds at lower temperatures, commonly used in petrochemical industries.

• Steam distillation c...read more

AJAX is a technique for creating interactive web applications by asynchronously sending and receiving data from a server without interfering with the display and behavior of the existing page. JSON is a lightweight data interchange format.

• AJAX stands for Asynchronous JavaScript and XML

• It allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes

• JSON (JavaScript O...read more