Tvs Brakes India Pvt Ltd Sholinghur Diploma Mechanical Engineer Interview Questions and Answers

A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Consists of two coils of wire (primary and secondary) wound around a core

• Primary coil receives electrical energy and produces a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy to the load

• Used to step up or step down voltage levels in power

Types of DC motors include brushed DC motors, brushless DC motors, and stepper motors.

• Brushed DC motors have a rotating armature connected to a commutator and brushes for switching current.

• Brushless DC motors use electronic commutation instead of brushes for switching current.

• Stepper motors move in precise increments, making them suitable for applications like 3D printers and CNC machines.

Apparatus for underground cable test includes cable fault locators, time domain reflectometers, and insulation resistance testers.

• Cable fault locators are used to pinpoint the exact location of faults in underground cables.

• Time domain reflectometers measure the length of the cable and locate any impedance mismatches.

• Insulation resistance testers check the insulation integrity of the cable to prevent electrical leakage.

Safety devices used on overhead lines include insulators, lightning arresters, and earthing systems.

• Insulators prevent current from flowing to the ground through the supporting structure.

• Lightning arresters protect the line from lightning strikes by diverting the surge of electricity to the ground.

• Earthing systems provide a path for fault currents to safely dissipate into the ground.

• Other safety devices may include bir...read more

Most CNC machines have 3 or 5 axes, but some advanced machines can have up to 9 axes.

• Most common CNC machines have 3 axes: X, Y, and Z.

• Some CNC machines have 5 axes: X, Y, Z, A, and B.

• Advanced CNC machines can have up to 9 axes, including rotational axes for more complex operations.

• The number of axes in a CNC machine determines the complexity of the operations it can perform.

G and M codes are programming languages used in CNC machines to control various functions and operations.

• G codes are used to control the movement and positioning of the tool or workpiece on a CNC machine.

• M codes are used to activate or deactivate specific machine functions like coolant flow or spindle rotation.

• Example: G01 is a code for linear interpolation, while M03 is a code for spindle start in a CNC program.

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

• First angle projection places the object in the first quadrant, with the plane of projection between the observer and the object.

• Third angle projection places the object in the third quadrant, with the plane of projection behind the object and the observer.

• In first angle projection, the top view is...read more

2 stroke engine completes the power cycle in 2 strokes of the piston, while 4 stroke engine completes it in 4 strokes.

• 2 stroke engine has intake, compression, power, and exhaust in 2 strokes

• 4 stroke engine has intake, compression, power, and exhaust in 4 strokes

• 2 stroke engines are simpler and lighter but less fuel efficient

• Examples of 2 stroke engines: chainsaws, mopeds, dirt bikes

• Examples of 4 stroke engines: cars, m

The least count of a digital vernier caliper is the smallest measurement that can be read on the scale.

• The least count of a digital vernier caliper is typically 0.01 mm or 0.0005 inches.

• It is determined by the number of divisions on the main scale and the number of divisions on the vernier scale.

• For example, if the main scale has 10 divisions and the vernier scale has 9 divisions, the least count would be 0.1 mm / 10 =

Measuring gauge is a tool used to measure dimensions accurately. Types include calipers, micrometers, and height gauges.

• Measuring gauge is a precision tool used to measure dimensions accurately.

• Types of measuring gauges include calipers, micrometers, height gauges, etc.

• Calipers are used for measuring the distance between two opposite sides of an object.

• Micrometers are used for measuring very small distances or thicknes...read more

Computer Numerical Control machine is a manufacturing process that uses pre-programmed computer software to control the movement of tools and machinery.

• CNC stands for Computer Numerical Control

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

• Examples of CNC machines include CNC routers, CNC mills, and CNC lathes

The policy and company standard refer to the set of rules and regulations that govern the operations and conduct of the company.

• The policy outlines the company's goals, objectives, and procedures for achieving them.

• The company standard refers to the level of quality, safety, and performance that the company expects from its employees and products.

• These policies and standards are designed to ensure compliance with legal...read more

Induction motor works on the principle of electromagnetic induction to convert electrical energy into mechanical energy.

• Induction motor has a stator and a rotor

• Stator has a set of coils that are supplied with AC current

• This creates a rotating magnetic field which induces current in the rotor

• The rotor then starts rotating due to interaction with the magnetic field

• Induction motor is widely used in industries for various