3 years ago

Fill in the blank to correctly complete the statement below.

Engineering

1 answer:

liubo4ka [24]3 years ago

4 0

ddditidifkxkdlfkdkdkdk

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kobusy [5.1K]

Answer:

okay checked it

Explanation:

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3 years ago

A motor vehicle engine operating with a diesel engine takes in atmospherics air at a temperature of 30°C and pressure of 1 bar.

nydimaria [60]

Answer:

η=0.568

Explanation:

At inlet condition

temperature = 30 C and pressure P=1 bar

The maximum temperature = 13456 C

Compression ratio r= 12

We know that for process 1-2

$\dfrac{T_2}{T_1}=r^{\gamma -1}$

$\dfrac{T_2}{303}=12^{1.4 -1}$

$T_2=818.68 K$

Now for process 2-3

$\dfrac{T_3}{T_2}=\dfrac{V_3}{V_2}$

$\dfrac{273+1345}{818.86}=\dfrac{V_3}{V_2}$

$\dfrac{V_3}{V_2}=1.97$

So the cut off ratio ρ=1.97

Efficiency of diesel engine

$\eta =1-\dfrac{\rho ^{\gamma}-1}{r^{\gamma -1}\gamma \left (\rho -1\right )}$

Now put the values

$\eta =1-\dfrac{1.97 ^{1.4}-1}{12^{1.4-1}\times 1.4\times \left (1.97 -1\right )}$

⇒η=0.568

So the efficiency is 56.8%.

4 0

3 years ago

Which option identifies the type of device the engineer will develop in the following scenario?

Stells [14]

It would be actuator

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3 years ago

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MArishka [77]

When two people put in an answer it tells u to mark someone. Like u can try it on me

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3 years ago

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Estimate the daily carbon utilization to remove chlorobenzene from 1.0 MGD of ground water saturated with chlorobenzene. Assume

Setler [38]

Answer:

4.6398 kg/day

Explanation:

Please find attached file for complete answer solution.

5 0

3 years ago