Mechanical engineers similar professions: Interview Questions Amongst Answers

During condensation, which type of estrus is released
Ans: Latent estrus of vaporization

What is a Isochoric procedure
Ans : Constant Volume (Process that takes house at constant volume)

During sensible cooling of moist air, what happens to its relative humidity
Ans: Increases

At critical point, what is the enthalpy of vaporization is
Ans: Zero 




What is conduction, convection together with radiation? Give Examples?
Ans:-
Conduction - The transfer of unloose energy betwixt objects that are inwards physical contact

Convection - The transfer of unloose energy betwixt an object together with its environment, due to circular fluid motion

Radiation - The transfer of unloose energy to or from a trunk yesteryear way of the emission or absorption of electromagnetic radiation

Can you lot transfer the estrus unloose energy from mutual frigidity trunk to hot body?
- Yes, amongst external work. Eg : Air conditioner

What is priming?
Ans:- Pump casing must live filled amongst liquid earlier the view is started, or the view volition non live able to function. If the view casing becomes filled amongst vapors or gases, the view impeller becomes gas-bound together with incapable of pumping.

What is yield point?
The yield strength or yield point is the stress at which a textile begins to deform plastically.

During rainy flavor fifty-fifty though thunder occurs commencement followed yesteryear lightning; why hit nosotros run across lightning commencement together with and then take away heed the thunder?
- Light travels faster than sound

What is viscosity?
Viscosity is a mensurate of the resistance of a fluid which is beingness deformed yesteryear either shear stress or tensile stress.

What is unit of measurement of specific gravity?
A – Dimensionless (No Unit) because it is a ratio of density to density

Zeroth police pull of thermodynamics:
If ii systems are in thermal equilibrium with a 3rd system, together with then the ii systems are also inwards thermal equilibrium amongst each other.

What happens to the specific book of H2O when heated from 00C
Ans: first decreases together with and then increases

What is the pregnant of Entropy
Entropy may live understood equally a mensurate of disorder inside a macroscopic system.

The 2d police pull of thermodynamics states that an isolated system's entropy never decreases. Such systems spontaneously evolve owards thermodynamic equilibrium, the nation amongst maximum entropy.

What is a Steady nation process:
Ans:  A procedure that occurs without a alter inwards the internal energy

What is a specific heat?
The specific heat is the amount of heat required per unit of measurement majority to heighten the temperature yesteryear ane marking Celsius.


Name iii units of Energy
Joules, Kilo Watt Hour, British Thermal Unit (BTU), Calories, Tons of Oil Equivalent, Electron Volt, Foot-Pound

Name about forms of Energy
Kinetic, Potential, Mechanical, Electric, Magnetic, Gravitational, Chemical, Ionization, Nuclear, Chromodynamics, Elastic, Mechanical wave, Sound wave, Radiant, Thermal

What is the departure betwixt consummate together with incomplete combustion
Ans:- Incomplete combustion occurs due to insufficient oxygen. In consummate combustion, carbon dioxide is the solely production that includes carbon whereas, inwards incomplete combustion, carbon monoxide and carbon dust are formed equally products.

What are the products of a consummate combustion?
During complete combustion carbon and hydrogen combine with oxygen (O2) toproduce carbon dioxide (CO2) together with H2O (H2O). During incomplete combustion component subdivision of the carbon is non completely oxidized producing soot or carbon monoxide(CO).

What is the departure betwixt Absorption together with Adsorption
Absorption is the procedure inwards which a fluid is dissolved yesteryear a liquid or a company (absorbent). Adsorption is the procedure inwards which atoms, ions or molecules from a core (it could live gas, liquid or dissolved solid) adhere to a surface of the adsorbent.

What is a Catalyst:-
a core that increases the charge per unit of measurement of a chemic reaction without itself undergoing whatsoever permanent chemic change.

What is a Reynolds Number
The Reynolds number is a dimensionless value that measures the ratio of inertial forces to gummy forces together with descibes the marking of laminar or turbulent flow.

What is In Bernoulli's regulation inwards fluid dynamics
Bernoulli's regulation states that an increment inwards the speed of a fluid occurs siimultaneously amongst a decrease in pressure or a decrease inwards the fluid's potential energy

What is sublimation
A procedure alter inwards which a core changes from a company to a gas without always passing through a liquid phase.

What is estrus capacity
The estrus capacity of a core indicates the remain amongst which a core heats up. A good thermal conductor would own got a low estrus capacity, indicating that a little amount of unloose energy causes a large temperature change. H5N1 proficient thermal insulator would own got a large estrus capacity, indicating that much unloose energy transfer is needed for a temperature change.

What is Mechanical Equilibrium
Mechanical equilibrium: when at that topographic point is no alter inwards pressure level at whatsoever dot of the system. However, the pressure level may vary inside the organization due to gravitational effects.

What is Thermal Equilibrium
Thermal equilibrium: when the temperature is the same throughout the entire system.

What are intensive properties of a organization amongst abide by to Thermodynamics.
Intensive properties: are those that are independent of the size (mass) of a system, such equally temperature, pressure, together with density. They are non additive.

The kinematic viscosity is the ratio of
absolute viscosity to the density of the liquid




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