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mixas84 [53]
2 years ago
10

The driveshaft of an automobile is being designed to transmit 134 hp at 2900 rpm. Determine the minimum diameter d required for

a solid steel shaft if the allowable shear stress in the shaft is not to exceed 6100 psi.
Engineering
1 answer:
Misha Larkins [42]2 years ago
4 0

Answer:

The minimum diameter is 1.344 in

Explanation:

The angular speed of the driveshaft is equal to:

w=\frac{2\pi N}{60}

Where

N = rotational speed of the driveshaft = 2900 rpm

w=\frac{2\pi *2900}{60} =303.69rad/s

The torque in the driveshaft is equal to:

\tau=\frac{P}{w}

Where

P = power transmitted by the driveshaft = 134 hp = 73700 lb*ft/s

\tau=\frac{73700}{303.69}  =242.68lb*ft

The minimum diameter is equal to:

d_{min} =(\frac{16T}{\pi *\tau } )^{1/3}

Where

T = shear stress = 6100 psi

τ = 242.68 lb*ft = 2912.16 lb*in

d_{min} =(\frac{16*2912.16}{\pi *6100} )^{1/3} =1.344in

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Answer:

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Explanation:

given data

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minimum electric power consumption of the fan motor

solution

we know that energy balance equation that is express as

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E in =  \rho A V \frac{V^2}{2}  

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Question

Determine the average water exit velocity

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53.05 m/s

Explanation:

Given information

Volume flow rate, Q=16 m^{3}/min

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  • Water is discharged to the atmosphere hence pressure is ignored

We know that Q=AV and making v the subject then

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Volgvan

Answer:

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