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MArishka [77]
3 years ago
7

Carbon dioxide enters a compressor at 100 kPa and 300 K at a rate of 0.2 kg/sec and exits at 600 kPA and 450 K. Determine the po

wer input to the compressor if no irreversibility are present. Assume surroundings are at 25 oC.
a. 25.5 kW
b. 30 kW
c. 15.5 kW
d. 10 kW

Engineering
1 answer:
NemiM [27]3 years ago
8 0

Answer:

Explanation:

attached below

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A cylindrical tank is required to contain a gage pressure 560 kPa . The tank is to be made of A516 grade 60 steel with a maximum
adoni [48]

Answer:

5.6 mm

Explanation:

Given that:

A cylindrical tank is required to contain a:

Gage Pressure P = 560 kPa

Allowable normal stress \sigma = 150 MPa = 150000 Kpa.

The inner diameter of the tank = 3 m

In a closed cylinder  there exist both the circumferential stress and the longitudinal stress.

Circumferential stress \sigma = \dfrac{pd}{2t}

Making thickness t the subject; we have

t = \dfrac{pd}{2* \sigma}

t = \dfrac{560000*3}{2*150000000}

t = 0.0056 m

t = 5.6 mm

For longitudinal stress.

\sigma = \dfrac{pd}{4t}

t= \dfrac{pd}{4*\sigma }

t = \dfrac{560000*3}{4*150000000}

t = 0.0028  mm

t = 2.8 mm

From the above circumferential stress and longitudinal stress; the stress with the higher value will be considered ; which is circumferential stress and it's minimum value  with the maximum thickness = 5.6 mm

8 0
4 years ago
if this light stays on after the initial startup of the vehicle it signals a warning that there is something wrong with the serv
NemiM [27]

Service brake system indicator is the warning that there is something wrong with the service brake system.  Hence option f is correct.

<h3>What is indicator?</h3>

Amber-colored indicator lights can be found at the front, back, and occasionally on the left and right sides of the vehicle. Whether you're turning left, right, or into oncoming traffic, you use your indicators to signal your planned change of direction.

When this light turns on, one of two things will happen. Either the parking brake is engaged or the hydraulic fluid (brake fluid) in the master cylinder is low. Your brakes are made up of a system of hydraulic oil-filled tubes called brake lines.

Thus, service brake system indicator is the warning that there is something wrong with the service brake system.  Hence option f is correct.

To learn more about indicator, refer to the link below:

brainly.com/question/28093573

#SPJ1

7 0
1 year ago
Unfiltered full wave rectifier with a 120 V 60 Hz input produces an output with a peak of 15V. When a capacitor-input filter and
Alborosie

Answer:

V_{pp}=2V

Explanation:

Source Voltage V= 120V

Frequency f=60Hz

Peak output voltage Vp=15V

Peak Output Voltage with filter V_p'=14V

Generally the equation for Peak to peak voltage is mathematically given by

V_p'=V_p-\frac{V_{pp}}{2}

Therefore

V_{pp}=2(V_p-v_p')

V_{pp}=2(15-14)

V_{pp}=2V

5 0
3 years ago
What is the first thing a person must do before anything can be done today corroded area
melamori03 [73]

Answer:

Explanation:

We have learned that three things are required for the anodic and cathodic steps of corrosion to occur: an electrolyte, an exposed metal surface, and an electron acceptor. It follows, then, that we can prevent corrosion by removing one of these essential conditions.

8 0
2 years ago
At an operating frequency of 5 GHz, a 50 lossless coaxial line with insulating material having a relative permittivity r = 2.25
lapo4ka [179]

Answer:

The answer is "150 \Omega".

Explanation:

Its line length must be converted into wavelengths for the Smith chart to be used.

\to \beta  = \frac{2 \pi }{\lambda } \\\\\to u_p = \frac{\omega }{\beta}\\\\\lambda =\frac{2 pi}{\beta} =\frac{2 \pi U_p}{\omega}=\frac{c}{\sqrt{\varepsilon_r f}}

                        = \frac{3 \times 10^8}{ 2.25 \times  (5  \times 10^9)}\\\\= \frac{3}{ 2.25 \times  5\times 10 }\\\\= \frac{3}{ 22.5 \times  5 }\\\\= \frac{3}{ 112.5}\\\\= 0.04 \ m.

l =\frac{0.30 }{0.04 } \times \lambda

  = 7.5 \lambda

Because it is an integrated half-wavelength amount,

Z_{in} = Z_L = 150 \ \Omega

8 0
3 years ago
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