How can loose terminals of the battery in the automobile cause discharging?

Which is the hardest material in the earth?

rameshm04

 Profile Answers by rameshm04 Questions by rameshm04

• Aug 15th, 2009

In matter of matal tungstun carbide is hardest one

Usman Adil

 Profile Answers by Usman Adil Questions by Usman Adil

• Jan 31st, 2009

First one is Diamond and the second one is cubic boron nitride(CBN)

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What is Stress Concentration? Give numerical examples.

harsh.ankalkoti

 Profile Answers by harsh.ankalkoti Questions by harsh.ankalkoti

• Aug 21st, 2009

It is the concentration of stress at a particular point or region such as holes, sharp edges, corners etc., This is due to the reduced cross section area.As we know stress= force / area........The ...

vrsaikumar

 Profile Answers by vrsaikumar Questions by vrsaikumar

• Jun 25th, 2009

Stress concentration or the stress will be maximum at the joints such as T joints and L joints. This results in fracture of materials easily. This is the reason whenever a material is manufactured w...

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thoratpiyush

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• Aug 26th, 2009

There is two procedure for engine testingOne for IC engine testing at EOL (End of Line) another for IC engine testing for Quality assurance.In 1st testing defects in the engine assembly can find out...

mailmisterk

 Profile Answers by mailmisterk Questions by mailmisterk

• Dec 11th, 2008

Morse test is conducted?to test ic engines. In this test, multi cylinders is used, indicated horse power, brake horse power and frictional power can be obtained.

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bhargavmech

 Profile Answers by bhargavmech Questions by bhargavmech

• Aug 27th, 2009

Hey i got the halticket for the vizag steel re-test.. halticket is nw given for only for those candidates who already had written the earlier exam...Now the exam is on 6th of sept (3PM-5PM)

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Name the different types of Bearing?what type of bearing used in Pumps?What type of bearing used in Air compressor?

bhargavmech

 Profile Answers by bhargavmech Questions by bhargavmech

• Aug 29th, 2009

There are many types of bearings, each used for different purposes either singularly or in combinations. These include ball bearings, roller bearings, ball thrust bearings, roller thrust bearings ...

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What is the difference between tractive force and frictional force? Which one drives the vehicle? What are the directions of the forces with respect to the wheel?

bhargavmech

 Profile Answers by bhargavmech Questions by bhargavmech

• Aug 29th, 2009

Yes you are right. But as you know that traction force is applied by the car wheels (tyres) against the ground. As the wheel is moving forward, the traction force is in the forward direction an...

NSK7777

 Profile Answers by NSK7777 Questions by NSK7777

• Aug 25th, 2009

Thanks for your reply, but I have a small doubt.Now consider a drive wheel rotating in a dry surface and other one on a icy surface.Slip do not occur in the first one because traction force is les...

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What does unit PS for the engine power means?

theleo

 Profile Answers by theleo Questions by theleo

• Sep 4th, 2009

PS stands for Pferdest?rken, a German measure for the power output of a car, equivalent to 1?01387 bhp.

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While riding bike in 5th gear at speed around 70-80 km/hr. suppose by any means the speed decreases such as break, but keeping the gear on 5th. Engine of the bike stops. Why? Explain.

theleo

 Profile Answers by theleo Questions by theleo

• Sep 4th, 2009

Generally in 1st and 2nd gear bike gives huge torque and less speed. But as we increase gears engine gives speed to maintain or increase speed which already bike have and give less torque. so, whe...

vivekzgoal

 Profile Answers by vivekzgoal Questions by vivekzgoal

• Sep 2nd, 2009

Because the engine will not produce a required torque in 5th gear, so power is transmitted from wheel to engine through clutch and gear box and finally it stops the engine.

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Why are petrol and diesel are most popular among fuels used in I.C. engine?

shukla_vivek1011

 Profile Answers by shukla_vivek1011 Questions by shukla_vivek1011

• Sep 6th, 2009

Because the ignition point or the combustion point of these two fuels (fluid) are very high as compared to any other fuel, other than gas fuel.

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What are the propulsion technologies used in automobiles other than I.C. engines?

ntinku

 Profile Answers by ntinku Questions by ntinku

• Sep 6th, 2009

3 cycle internal combustion engine and 2 cycle internal combustion engine.

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How can we manufacture T-joint from a cylinder with minimum material removal rate?

Is involute or cycloidel gear best and generally used in industry? Give Reason.

S.KALAIYARASAN

 Profile Answers by S.KALAIYARASAN Questions by S.KALAIYARASAN

• Sep 13th, 2009

Involute gear is best when compared to cycloidel gear. Because backlash is very less.

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What are DIN Standards?

RAVI MENON

 Profile Answers by RAVI MENON Questions by RAVI MENON

• Sep 16th, 2009

This is a German material standardDIN means DEUTSCHES INSTITUT FUR NORMUNG e.v

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What is the minimum set of inspection equipment which we have to keep at site to inspect blasting and painting?

RAVI MENON

 Profile Answers by RAVI MENON Questions by RAVI MENON

• Sep 16th, 2009

Blasting surface profile gauge,
Wet film thickness gauge,
Dry film thickness gauge

rameshm04

 Profile Answers by rameshm04 Questions by rameshm04

• Aug 15th, 2009

For measure Blasting?readings good equipment Roughness meter and for painting ELCO Meter

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How we can increase the efficiency of boiler without creating any effort?

dneipp

 Profile Answers by dneipp Questions by dneipp

• Sep 20th, 2009

Different ways, 1. use a vent damper, 2. insulate steam pipes and condensate pipes. That will not increase the efficiency of the boiler, but will save substanial energy. Make sure the boiler is tuned in properly. Make sure your steam traps are working properly.

nilesh87

 Profile Answers by nilesh87 Questions by nilesh87

• Sep 10th, 2009

Increase boiler efficiency one percent for each 15 percent reduction in excess air or 40 degree Fahrenheit reduction in flue gas.

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How can we decide the height for cooling tower?

bhargavmech

 Profile Answers by bhargavmech Questions by bhargavmech

• Oct 1st, 2009

General rules are usually used to determine cooling tower height depending on the necessary time of contact:Approach to Wet Bulb (0F) Cooling Range (0F) Tower Height (ft) ...

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State the laws of Thermo dynamics.

selvasuresh

 Profile Answers by selvasuresh Questions by selvasuresh

• Nov 3rd, 2009

There are laws of thermodynamics1. Zeroth law2. First law of thermodynamics3. Second law of thermodynamics4. Third law of thermodynamicsZeroth laws says that energy can neither create nor be destroyed...

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Why diesel engines are called as high torque engines and petrol engines as high speed engines?

Sanjana0320

 Profile Answers by Sanjana0320 Questions by Sanjana0320

• Nov 12th, 2009

As diesel engine has high compression ratio therefore it has high torque. Petrol engines have high speeds coz it produces more heat at combustion chamber because of high calorific value moreover heat ...

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Why ethanol fuel tank is not used in automobile for increasing efficiency?

rohanmeher0287

 Profile Answers by rohanmeher0287 Questions by rohanmeher0287

• Nov 13th, 2009

Because in automobile we use diesel fuel and diesel fuel and ethanol are non mixing in nature. Gasoline is a octane fuel whereas diesel is a cetane fuel.

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