interview questions

What is the difference between 2T and 4T oils ?
What is the difference between flywheel and governor ?
What is the difference between refrigeration and air conditioning ?
What is the difference between refrigirator and heat pump ?
In 2-stroke engine the pick-up is relatively more. Why ?
What is the difference between 2-stroke and 4-stroke engines ?
Laws of Thermodynamics.
Mention various gear finishing processes.
Iron-Carbode diagram.
Why you cannot move your vehicle in top gear from rest ?
Example for simply supported beam and cantilever beam.
Point of contraflexer occurs in which beam ?
What is pure bending ?
Tool nomenclature. Tool signature.
HSS composition.
High, medium, and low carbon steels.
Define Youngs modulus, Bulk modulus, Rigidity modulus.
Define sheer stress, tensile stress.
Define SFD and BMD and explain types of beams.
Differentiate piercing and blanking.
Some sheet metal operation like notching, lancing, flaring.
Some operations in welding-types of welding. Types of flames in gas welding.
Investment casting, sheel mould casting.
Some operations in lathes.
What is Finite Element Method ?
What is the difference between AutoCad and Pro-E ?
Advantages of Pro-E ?
Stress-Strain diagram.
How will you determine the efficency of IC engines.
Poisons ratio.
Carnot cycle, Otto cycle, Diesel cycle P-V and T-s diagram.
What is Tool signature ?
Intensive and Extensive properties.
How can you specify a lathe ?
What are the types of scales ?
1st and 3 rd angle projection ?
Fatigue, creep in strength of metals ?
Indicator ? Imporatnce of Bulk modulus ?
In refrigeration, why does the temperature decreases when the refregirant passes through the expansion valve ?
What is the difference between a throttle valve and nozzle ?
What is the use of hot rolling and cold rolling ?
What is meant by recrystallisation ?
What is the difference between hardness and hardenability ?
Differentiate nozzle and a diffuser.
Differentiate jig and fixture.
Fire tube/water tube boiler. Example.
Thermodynamics laws with life time examples (refrigeration for 3rd law).
What do you mean by knocking and ani-knocking agents. Examples.
Perspective projection.
Turbines-Types-Examples.
What is Surface Tension force ? (This question requires answer without tension)
What is the Point of Contraflexure ?
Give the characteristics of ideal fluid.
IC ENGINES
Difference between 2 stroke and 4 stroke engines ?
Why does Diesel engine do not have spark plugs ?