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3 years ago

Design a linkage with the following requirements:

Engineering

1 answer:

iris [78.8K]3 years ago

5 0

Answer:

For definite motion in all links, two inputs to any 2 links are required

Explanation:

According to Grubler's equation

F = 3(n-1) - 2l - h

where

h= number of higherr pairs ;

l = number of lower joints ;

n = number of links ;

F = Degree of freedom ;

we have ,

n=5 ; l=5 ; h=0

By putting values we get,

F = 3(5-1) - 2*5 - 0

F = 12-10-0

F = 2

So, in order to yield definite motions in all links 2 inputs in 2 links are required.

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topjm [15]

Answer:

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Explanation:

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4 years ago

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Goshia [24]

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3 years ago

For a fluid with a Prandtl Number of 1000.0, the hydrodynamic layer is thinner than the thermal boundary layers. a) True b) Fals

kvv77 [185]

Answer:

(b)False

Explanation:

Given:

Prandtl number(Pr) =1000.

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$\alpha$ is the molecular diffusivity of heat.

Prandtl number(Pr) can also be defined as

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Where $\delta$ is the hydrodynamic boundary layer thickness and $\delta_t$ is the thermal boundary layer thickness.

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So hydrodynamic layer will be thicker than the thermal boundary layer.

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4 years ago