When two walls are in contact each other, considering thermal contact resistance, What is the mode of heat transfer in the air gap present between two walls?

Chandrakant Sahu

• Sep 24th, 2016

Convective Heat Transfer

sourabh

• Sep 21st, 2016

Heat loss is minimum

Answer Question  Select Best Answer

In which direction should a mill turn, throw up or in an approaching way between the pinion and the girth gear 

Ganesh ram.s

• Nov 1st, 2016

Usually ball and tube mills are working in the principal of Attrition ,Hammering

Answer Question  Select Best Answer

What is the Shearing Stress of Al, Steel & Stainless Steel for tonnage calculation?

santosh das

• Oct 31st, 2016

Stress is directly propositional to strain with elastic limit and constant young modulus is different for different metals, so we calculate stress.

Answer Question  Select Best Answer

santosh das

• Oct 31st, 2016

Displacement pump is a mechanical pump which is converted to mechanical energy to hydraulic energy.

Centrifugal pump is a mechanical device which is converted to mechanical energy to kinetic energy or pressure energy.

sahil sarpaul

• Jun 20th, 2016

In displacement pumps the fluid is confined in the space i.e. within the working boundary of the pump whereas in case of the centrifugal pumps the is not confined within the boundary instead its supplied uniformly and steadily to get the required motion.

Answer Question  Select Best Answer

Is Pneumatic cylinder used as a hydraulic cylinder, if so how?

Arvind kumar yadav

• Feb 27th, 2017

Like Hydraulic cylinders, something forces a piston to move in the desired direction. So we can use pneumatic cylinders as hydraulic cylinder with some modifications like a vessel for fluid storage, a...

Suriya

• Dec 5th, 2014

Pneumatic cylinder - Its being actuated with the help of air as a medium,instantaneous actuation and cant expel more load since its highly compressive load carrying is limited Hydraulic cylinder-Its b...

Answer Question  Select Best Answer

How can we close a door by using a sliding plate stroke in a machine, not physically connected to the door?

How to calculate damping force in shock absorber?

deepak

• Apr 4th, 2017

Damping force is equal to multiplication of damping coefficient and velocity of damper.

Answer Question  Select Best Answer

M33*2 bolt size refers to ..................

Ashis kar

• May 9th, 2017

M33 for major diameter & 2 for pitch of threader length (mm)

srmyst

 Profile Answers by srmyst Questions by srmyst

• Mar 25th, 2012

M33*2 refers to major diameter of thread is 33mm and pitch size(distance between two crests) is 2 mm.

Answer Question  Select Best Answer

What is the difference between Production and Manufacturing

Naveen kumar

• May 12th, 2017

Manufacturing is the process of converting the raw materials into desired shape.

Production is the process of making the manufacturing parts into working model.

i.e. Production is look like boundary inside things happening is called as manufacturing.

chetan

• Apr 4th, 2017

Production is the process of manufacturing.

Answer Question  Select Best Answer

What happens when we close the valve in discharge line while the pump still working?

eiddy

• Jun 1st, 2017

Water hammer phenomena takes place due to the pressure rise.
Closing the valve suddenly causes revers flow (reaction flow) may damage the pump or elbows if exist.

pawan kumar singh

• Nov 1st, 2016

When the discharge valve is closed in the running condition of a pump then the friction between pump impeller and liquid generates heat which increases continue and hence the fluid gets vaporized which causes problems of cavitation.

Answer Question  Select Best Answer

A piece of concrete has density of 2300 kg/m3 and is 400 x 600 x 3000mm thick. It is lowered into the sea by a crane for an underwater construction project. Determine the tension in the rope of the crane

(a) When the concrete is suspended in the air
(b) When the top is 1.5m above water,
(c) When the top is just below water, and
(d) When the top is 2m below water....

eiddy

• Jun 1st, 2017

a) The tension force equals the weight of the concrete = d*v*g (density, volume and acceleration of gravity respectively). b) Approximately the same result. c) Here there is an affective buoyancy fo...

Answer Question  Select Best Answer

Er. Sudheer kr yadav

• Jun 11th, 2017

Gear is larger diameter where as pinion is smaller diameter & gear is driver and pinion is driven element.

MAHESH YERRABATHULA

• Feb 22nd, 2017

Pinion is smaller in diameter whereas gear has larger diameter. If we give power to the pinion and treat it as driver when both are engaged then speed will be reduced.

Answer Question  Select Best Answer

nag

• Jul 4th, 2017

Bolts have internal threads and Nuts have external threads

c.jeno

• May 2nd, 2017

Designation of bolt determined by major diameter and pitch so example of bolt selection M6x1.

Answer Question  Select Best Answer

How to calculate weight of jaw plate of a jaw crusher with its given dimensions and drawing?

Abhiram

• Aug 4th, 2017

Refrigerator is confined to small enclosure, it just maintains the temperature below the room temperature whereas air conditioner is confined to room. It can be used to cool the air, heat, humidify, dehumidify etc.

H V VENKATESH

• Jul 13th, 2017

Refrigeration: is referred to cooling of required space using various processes. Most of the refrigeration involves Vapor Compression Refrigeration Process which involves following steps which i...

Answer Question  Select Best Answer

Why steels are heat treatable and why not cast irons? If yes why?

akshat srivastava

• Aug 8th, 2017

Cast iron is not heat treated because it becomes brittle.

hvdwaard

 Profile Answers by hvdwaard Questions by hvdwaard

• Feb 16th, 2016

Steel is an Iron/Carbon Alloy for arguments sake. So the carbon is fully absorbed within the Iron.The carbon and iron re-settle in a various atomic micro-structures when heated and cooled down quickly...

Answer Question  Select Best Answer

Which type of heat exchangers are commonly used:
a. Counter current flow
b. Parrell current flow
c. Cross flow
d. All the above

Aitazaz

• Aug 8th, 2017

Counter current is mainly used in refineries to increase heat exchange but if we will talk about industrial scale like cooling towers then cross flow has the major importance.

Lalith

• Apr 9th, 2017

Counter Flow H.E. are mostly used. Because:
1. More heat exchange, with minimum medium of exchanger.
2. Less material requirement for production.
3. Can be utilized for small exchange purpose to High as required.

Answer Question  Select Best Answer

mahesh kolpe

• Aug 9th, 2017

The role of mechanical Engg. in industry is to working your idea and give best to your in industry and main part is take maintenance knowledge and learning manufacturing process.

neeraj

• Jul 9th, 2017

I think the role of mechanical engineer is to take the product from an idea to the finished goods.

Answer Question  Select Best Answer

Ranvijay

• Aug 13th, 2017

Stainless steel and Mercury

saroj

• Dec 22nd, 2016

Vanadium

Answer Question  Select Best Answer

What is the latest casting process used?

chandan kumar

• Aug 21st, 2017

The latest casting process is Injection Moulding System

Answer Question  Select Best Answer