10+ Interview Questions and Answers

Different types of lines used in engineering drawing include object lines, hidden lines, center lines, dimension lines, and extension lines.

• Object lines are thick, continuous lines used to outline the shape of an object.

• Hidden lines are used to represent features that are not visible in the current view.

• Center lines are used to indicate the center of a circle or arc.

• Dimension lines show the size of an object or part.

• Extension lines are used to indicate the points between whic...read more

PLC is a specialized computer for industrial control while microcontroller is a small computer on a single integrated circuit.

• PLC is designed for industrial automation and control systems while microcontroller is used in various applications such as consumer electronics, automotive, and medical devices.

• PLC has a fixed set of inputs and outputs while microcontroller can be programmed to interface with various sensors and actuators.

• PLC is programmed using ladder logic or other ...read more

Measuring instruments are tools used to quantify, monitor, and record physical quantities such as length, weight, temperature, and time.

• Measuring instruments are used to ensure accuracy and consistency in measurements.

• Examples include rulers, thermometers, scales, stopwatches, and voltmeters.

• They can be analog or digital, depending on the type of measurement being taken.

• Calibration is important to ensure the accuracy of measuring instruments.

• Measuring instruments are essentia...read more

Least count is the smallest measurement that can be made using a measuring instrument.

• It is the smallest division that can be measured on a scale or instrument.

• It helps in determining the precision of the instrument.

• For example, if a ruler has a least count of 1 mm, it means that the smallest measurement that can be made is 1 mm.

CNC machine stands for Computer Numerical Control machine, which is a computer-controlled machine tool used for cutting and shaping materials.

• CNC machines are used in manufacturing to automate processes such as cutting, drilling, milling, and more.

• They operate based on pre-programmed computer software that controls the movement of the machine's tools.

• Examples of CNC machines include CNC routers, CNC mills, CNC lathes, and CNC plasma cutters.

Unit of resistance is measured in ohms and represents the opposition to the flow of electric current.

• Resistance is measured in ohms (Ω)

• It represents the opposition to the flow of electric current

• Higher resistance means less current flow

• Examples: A light bulb has resistance, resistors in electronic circuits

First angle projection and third angle projection are two methods of creating orthographic projections of a 3D object.

• First angle projection is commonly used in Europe and Asia, while third angle projection is commonly used in North America.

• In first angle projection, the object is placed in front of the viewing plane and the views are created by projecting lines from the object onto the plane.

• In third angle projection, the object is placed behind the viewing plane and the vie...read more

vRS is given only to NTTF students because of their technical expertise and practical knowledge.

• vRS is a high-performance variant of Skoda cars.

• NTTF is a technical training institute that focuses on practical knowledge.

• Skoda has partnered with NTTF to provide hands-on training to their students.

• NTTF students have the technical expertise and practical knowledge required to handle high-performance cars like vRS.

• Skoda believes that NTTF students are the best fit for vRS due to t...read more

Motors are devices that convert electrical energy into mechanical energy. AC motors run on alternating current while DC motors run on direct current.

• Motors are devices that convert electrical energy into mechanical energy

• AC motors run on alternating current

• DC motors run on direct current

• AC motors are commonly used in household appliances like fans and refrigerators

• DC motors are often used in portable devices like power tools and electric vehicles

A lathe machine is a tool that rotates a workpiece on its axis to perform various operations such as cutting, drilling, and sanding.

• Lathe machines are commonly used in metalworking and woodworking industries.

• They come in various sizes and types such as engine lathe, turret lathe, and CNC lathe.

• Lathe machines can be used to create a variety of objects such as bowls, candlesticks, and baseball bats.

• They are operated by skilled workers who use various cutting tools to shape the ...read more

A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).

• Rectifiers are commonly used in power supplies to convert AC to DC for electronic devices.

• There are different types of rectifiers such as half-wave, full-wave, and bridge rectifiers.

• Rectifiers typically consist of diodes that allow current to flow in only one direction.

• Examples of rectifiers include silicon diode rectifiers and vacuum tube rectifiers.