Maini Precision Products Maintenance Engineer Interview Questions and Answers

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

There are several types of welding including MIG, TIG, Stick, and Flux-Cored welding.

• MIG welding uses a wire electrode and a shielding gas to join two pieces of metal together.

• TIG welding uses a tungsten electrode and a filler metal to create a strong weld.

• Stick welding uses a consumable electrode coated in flux to create a strong bond.

• Flux-Cored welding uses a wire electrode with a flux core to create a protective shi

1st angle projection is used in Europe & 3rd angle projection is used in North America. They differ in placement of views.

• 1st angle projection places the object in front of the viewing plane while 3rd angle projection places the object behind the viewing plane.

• In 1st angle projection, the top view is placed below the front view while in 3rd angle projection, the top view is placed above the front view.

• 1st angle project...read more

Six Sigma is a data-driven methodology used to improve business processes by reducing defects and variability.

• Six Sigma aims to achieve a level of quality where the probability of defects is extremely low.

• It involves a structured approach to problem-solving using statistical analysis.

• The methodology uses a set of tools and techniques such as DMAIC (Define, Measure, Analyze, Improve, Control) and statistical process con...read more