• Umamageswari

MemberDec 25, 2011

## Torque & Speed Relation

Anyone knows the torque structure ?relation between the speed and torque?
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Replies
• MemberDec 25, 2011

Torque and speed are inversely proportional. why did you give 5 and 3 as options? what does it mean?
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• MemberDec 25, 2011

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• MemberDec 25, 2011

Torque can be increased at the cost of speed.
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• MemberDec 31, 2011

at a constant power output torque is inversely to speed. if power is increasing torque or speed or both can increase significantly.
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• MemberJan 3, 2012

For any rotating machine:
Torque is propotional to the power but,
inversley proportional to velocity.
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• MemberJan 11, 2012

at constant power ,speed is inversly propo to torque.. P=2*pi*N*T/60..
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• MemberJan 19, 2012

So torque is inversly to speed? Could you explain your formula please. Why /60 ?
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• MemberJan 25, 2012

/60 is for N.....
N is revolutions per minute
But T is in seconds
So , we convert rpm(revolutions per minute) in to rps(revolutions per second) dividing it by 60...
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• MemberJan 25, 2012

Torque is the load carrying capacity in crude words...
More over the best example for demonstrating the difference is

1. BENZ car- High speed, Less torque(Load carrying capacity- 4+1 people)
2. BUS - Low speed , High Torque(High load carrying capacity-55 + 2 people)
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• MemberJan 26, 2012

Power[kw]
={torque[N-m]*pi*rotational speed in RPM }/30000

Power[kw]*30000
=torque[N-m]*pi*rotational speed in RPM

TORQUE
={Power[kw]*30000}/pi*rotational speed in RPM

From the above formula,it is clear that torque decreases with speed in Torque vs speed curves.

Source: <a href="https://en.wikipedia.org/wiki/Torque" target="_blank" rel="nofollow noopener noreferrer">Torque - Wikipedia</a>
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• MemberMar 27, 2012

in even more simple words,

speed : it is merely the number of rotations of a wheel or gear per second or per minute or per unit time.

torque : it is the leverage applied to rotate a circular machine member . it is the product of the force applied on a wheel to rotate it and the diameter of the wheel.

thus greater the diameter of the wheel , the lesser the force that can be applied.

and thus when the diameter of the wheel increases its speed decreases

hence torque and speed are inversely proportional
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• MemberJul 6, 2015

i think increase in torque also increase speed
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