ONKAR DIES Mechanical Maintenance Engineer Interview Questions and Answers

There are various types of compressors used in mechanical maintenance, including reciprocating, rotary, centrifugal, and axial flow compressors.

• Reciprocating compressors use a piston to compress the gas, similar to the engine of a car.

• Rotary compressors use rotating impellers or screws to compress the gas.

• Centrifugal compressors use a rotating impeller to accelerate the gas and then convert the kinetic energy into pres...read more

A combination set is a tool used for measuring and marking angles, distances, and depths accurately.

• Combination sets are commonly used in engineering and construction.

• They typically include a protractor, ruler, and depth gauge.

• The protractor is used to measure and mark angles.

• The ruler is used to measure and mark distances.

• The depth gauge is used to measure and mark depths.

• Combination sets are versatile and can be used...read more

There are several types of CNC control units used in engineering.

• There are three main types of CNC control units: open-loop, closed-loop, and computer numerical control (CNC).

• Open-loop control units are the simplest and least expensive, but they do not provide feedback on the actual position of the machine.

• Closed-loop control units use feedback sensors to continuously monitor and adjust the position of the machine, res...read more

3ph induction motor works on the principle of electromagnetic induction to convert electrical energy into mechanical energy.

• Three-phase AC power is supplied to the stator winding, creating a rotating magnetic field.

• This rotating magnetic field induces a current in the rotor, which in turn creates its own magnetic field.

• The interaction between the stator and rotor magnetic fields causes the rotor to rotate, converting e

1 HP is equal to 746 watts.

• HP stands for horsepower, a unit of power used in the automotive and manufacturing industries.

• Watt is the SI unit of power.

• The conversion factor between HP and watt is 746.

Incremental encoder measures relative position changes while absolute encoder measures absolute position.

• Incremental encoder generates a series of pulses as the shaft rotates, which are used to determine the relative position change.

• Absolute encoder generates a unique digital code for each shaft position, providing absolute position information.

• Incremental encoder is simpler and less expensive, while absolute encoder i...read more