Mechanical Engineering Interview Questions
Questions Answers Views Company eMail

IN AC mechanical fuelpump what stands for AC? IN SU mechanical fuelpump what stands for su?

Nissan,

2050

1hp=how much rpm

Fiat, MAHINDRA,

2 5641

how many kinds of bearing?

JSW, ACC,

3 5579




what are the main problems of solar electrical systems? to make quality control on, which parameters that need so?

860

what are the main challenges with solar energy system?

1081

how many psi to one bar?

6 4229

what is the different between mechanical starter vs electrical starter? Solid stage starter? Soft starter?

Infosys,

1050

A fan is handling hot air at 285 degC with flow of 411635 m3/hr, power consumed is 1165kW and efficiency is 66%. what will happen to flow, power and efficiency of the fan if a water spray system is introduced to reduce the air temperature up to 200 degC? (also please refer any document regarding this)

776




have a clutchless car or bike clutch for power transmission???

818

gearless vehicle used which type of gearbox and do this work????

JCET,

1023

What is Temperature ?

Reddy Labs, Dr Reddys,

4 4209

what is difference between pipe and tube.

Sterlite, Jaiprakash,

4 6279

difference between wps & pqr

MRF, TCS, Spicer India,

2 9357

1. Centrifugal pump is used to drain the coolant from the machine to coolant tank via magnetic separator and paper filter. But more foam is raising in the coolant tank. We need to arrest the foam formation inside tank which is nt desired. How do we correct this issue? (Hardness of the water is at recommended ppm).

Nissan,

2 2651

1) Any pipe line working fluid may water / steam on it one manual isolation valve suppose one side of valve 6 kg/ cm^2 pressure (i.e. up stream) and other side is “ 0” kg/ cm^2 pressure(i.e. down stream) . So how much Tourqe required for opening the valve in terms of Newton force wheather normal man can open this valve. (for reference pipe nominal bore is 100 NB )

Ansaldo,

685


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Un-Answered Questions { Mechanical Engineering }

how to calculate GD square for pump?

168


what is the relation between pressure&veloscity? give me one practical example?

749


my dad is refused 8 times in visitor visa? now my dad wants to go usa only? tell me what he can do? whats the reason?

877


For hot water : please compare to solar heat and heat pump (environment/operation/invest...) Is there any comparison available. Thank you

648


Where is the expansion tank located?

783






on which basis safety valves are set with particular pressures?

710


0 1 2 3 4 0 0 0 1 1 2 1 0 0 1 2 3 2 0 1 2 3 4 3 1 1 2 4 4 4 1 2 3 4 5 Horizontal row = x Vertical row = y I need to term these values as a function (yellow horizontal x, yellow vertical as y) The closest I have got is: ROUND(((X*(Y*10+15)-25)/60+1) Is there a way to calculate it?

592


en 19 & en24 which one is good for pipe mill shaft

413


why the path of a satellite is always elliptical with earth not at the centre of the ellipse?

1766


I want to know flow rate,max pressure drop,heat load,design pressure,test presurre,temp both inlet and outlet of coldside and hot side of 1,2,3,5,5.5,7.5,10,12,15 tons

670


how to calculate bearing width

390


Identify the common problems and solution for gas turbines, diesel generator and wind turbine during operation.

1946


Draw a crankshaft and show the parts?

761


fan having rotational motion why

1262


How cooling Tower height selected

1135