Mechanical Engineering Interview Questions
Questions Answers Views Company eMail

why do we require cooling towers in case of water cooled chillers?????

2 3421

is it necessory to use heat exchanger in case of water cooled chillers & cooling towers?????

3 2703

plz anyone provide me the sample test papers of ONGC as of i m from Mechanical engg bakground and would be appearing for the test in the june 2010. My email id - neeraj_94312@rediffmail.com

TATA,

690




what is vacuuming in air conditioning and why we do it.

intex,

3 3919

when do we use roller bearing, deep groove ball bearing, angular bearing, sealed bearing, semi sealed bearing, unsealed bearing, anti friction bearing, journal bearing, thrust bearing

756

sir i have completed diploma in mechanical engineering in 2006 i have one year experiance in maintenance field but i want to know how can we success in maintenance field fastly

1 2004

sir plz tell me what is the basic concept of mechanical maintenance

HPCL, Bhel,

2 6045

how to masure rake or helix angle of drill ?

1263




why are you want to join our company?

TATA,

16 7810

Write the relation between EER , COP , SEER in airconditioning?

MGL,

1 5845

why machine is required

12 5853

How to calibrate Vacuum Gauges if you don't have any standard gauge available with you? please suggest procedures for calibration of Vacuum gauge like pirani gauge ,cold cathod gauge,thermocouple gauge without any standard gauge.

1404

I am a mechanical student.And have cleared the written for NTPC. Please suggest what and how to prepare for the interview.i have got only 2-3 weeks in hand.

703

Lowest temp in vapour compression cycle in :(Ans:Expansion devices) Contineous welding is type of :(Seam Welding) refrigerant in domestic Refrigerator:(R 134 A) Lowest critical temp of refrigerant:(Freon) Statement....this is .....law:(Avagadros law) Ratio reynold no to prandtl no is:(Pecelent no) if welding is done from right to left then what is the name welding:(Not known) slip gauges are made up of:(alloy steel) clearence between meeting surfaces is due to which gauges: question on rubby laser,rake angle,heat treatment processes,joules law,bell coleman cycle like a/c works on which cycle?

Hitachi,

1051

I am a mechanical student.And have cleared the written for NTPC. Please suggest what and how to prepare for the interview.i have got only 2-3 weeks in hand.

IFFCO,

754


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Un-Answered Questions { Mechanical Engineering }

Name the four most important components of a Freon refrigeration system.

699


What are your significant functional achievements in the present company? How did they contribute to the total process

3043


THIS IS HARI PRASAD. I KNOW THAT HVAC MEANS HEATING VENTILATION & AIR- CONDITIONING. I NEED DESIGN CONSIDERATION OF HVAC UNIT.

1162


on which date sail exam is held & what the criteria for this exam

756


What is the difference between P11 & P22 pipes?

13650






Why the ship cranes are not having counter weights irrespect of industrial & civil construction cranes are having counter weights.

865


project,planning, equioment erraction &maint format. project,planning&scheduling,bar chart

1381


What will you check if one cylinder of your engine is not like the others?

812


Enumerate the cause of pumps low delivery of water

791


Where mixed flow type compressors are used?

591


what is the difference between ASTM A572 GRADE 50 [Fyld 345 MPa ] and IS2062 GRADE A E250 [Fe410 WA]?

1509


can i use IS 2062 gr B pipes in the softening plant pipings?

929


are BS, BSP, BSW threads same?

1102


when do we use roller bearing, deep groove ball bearing, angular bearing, sealed bearing, semi sealed bearing, unsealed bearing, anti friction bearing, journal bearing, thrust bearing

820


What is hertz in electrical system?

762