Mechanical Engineering Questions

Mechanical Engineering Questions

What is Archimedes principle

Archimedes principle is a physical law of buoyancy which states that a body, wholly or partly immersed in a fluid, experiences an upthrust (the buoyancy force or apparent loss of weight) equal to the weight of the fluid displaced.

What do you mean by term consolute temperature

Convolute temperature refers to the temperature at which two partially miscible liquids become fully miscible.

Define isobaric process

The isobaric process is defined as a thermodynamic process that is carried out at constant pressure.

What do you mean by annealing in metal alloys

Annealing is defined as the heat treatment process that involve altering of the microstructure of materials to bring a change in its mechanical or electrical properties. Annealing in alloys is defined as process of restoring ductility and lowering the strength of cold-worked components and is carried by heating above the recrystallization temperature and cooling slowly.

What are different types of fits in Mechanical Engineering

Three types of fits are there in Mechanical Engineering

  1. Clearance Fit: Clearance fit is used in situations that require loose mating and components free movement.
  2. Interference Fit: Interference fit, also called as press fit or friction fit is defined as fastening of two components by pushing them together.
  3. Transition Fit: These fits lie between clearance and interference fits and are recommended for situations in which accuracy is very important.

What does ABS signifies in Motor Vehicle Engineering

ABS stand for anti-lock braking system and it signifies sensor-controlled brakes on a motor vehicle that prevent wheel lockup during braking.

What do you mean by octane scale in fuels, specify components with 100 and 0 Octane number

The octane scale is an arbitrary scale for the octane rating.

  • Iso-octane is given an octane number of 100
  • Heptane is given octane number of zero

What is open-loop control system

Open-loop control system is defined as a control system where the input applied to the plant is independent of the plant output.

What is Bénard convection

Bénard convection is a form of natural convection ascending as a result of thermocapillary instability, in which horizontal counter-rotating vortices occur in a thin layer of liquid heated from below.

What is a Damper

A sliding or hinged plate for controlling the draught through a furnace

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