All categories

3 years ago

Why exam is important in our life

Engineering

2 answers:

qwelly [4]3 years ago

6 0

Answer:

I am also finding this ans but it is difficult

Explanation:

well to live in this world exam r important

we have to come with every difficulty

so that we can learn

forsale [732]3 years ago

4 0

Explanation:

Exam gives the result that what you learnt

And for Education exam is main

without Education everything is very difficult

You might be interested in

The ratio of the rate of etch-product formation to the flow rate of etch gas should be greater than 0.15 for uniform etching. Su

son4ous [18]

Answer:

answer for the question :

The ratio of the rate of etch-product formation to the flow rate of etch gas should be greater than 0.15 for uniform etching. Suppose a 200 mm diameter silicon wafer is etched at a rate of 50.0 nm/min in a CF4 plasma.(a) How many Si atoms are removed per minute?(b) What evolution rate of SiF4 does this correspond to in standard cubic centimeters per minute?(c) What minimum flow rate of CF4 should be maintained? "

is explained in the attachment.

Explanation:

7 0

4 years ago

a ball is subject to two forces F1 and F2. The magnitudes of the two forces are 45.0 N and 70.0 N respectively. In the figure be

tino4ka555 [31]

Answer:

F1.x ≈ -28.93
F1.y ≈ 34.47
F2.x = 70
F2.y = 0
(F1+F2).x ≈ 41.07
(F1+F2).y ≈ 34.47
|F1+F2| ≈ 53.62
∠(F1+F2) ≈ 40.0°

Explanation:

A suitable calculator can show you the vector components and their resultant in polar or rectangular format. (See attached.) 2D vectors are conveniently treated as complex numbers, which is why the y-component values are shown as imaginary.

(The 50° angle measured from the -x axis is equivalent to 130° measured from the +x axis, which is the reference we're using here.)

If you'd like to compute the vector components by hand, they are ...

(x, y) = magnitude×(cos(angle), sin(angle))

This notation is sometimes abbreviated <em>magnitude cis angle</em>, a reference to the complex number form x+yi.

8 0

2 years ago

You receive the bill for servicing your diesel engined car. As a good engineer you immediately notice that one of the items on b

vichka [17]

Answer:

b. spark plugs

Explanation:

Diesel engines are characterized in that the mechanism that activates the explosion of fuel is high pressures, so when the piston reaches the top of the cylinder, the pressure of the air-diessel mixture is so high that it causes the explosion, this It is what generates the power in a diesel engine.

3 0

3 years ago

The surface of an object is the<br> texture value appearance or function

maksim [4K]

Texture value appearance

4 0

3 years ago

Consider a cylinder of height h, diameter d, and wall thickness t pressurized to an internal pressure P_0 (gauge pressure, relat

Serggg [28]

Explanation:

Note: For equations refer the attached document!

The net upward pressure force per unit height p*D must be balanced by the downward tensile force per unit height 2T, a force that can also be expressed as a stress, σhoop, times area 2t. Equating and solving for σh gives:

Eq 1

Similarly, the axial stress σaxial can be calculated by dividing the total force on the end of the can, pA=pπ(D/2)2 by the cross sectional area of the wall, πDt, giving:

Eq 2

For a flat sheet in biaxial tension, the strain in a given direction such as the ‘hoop’ tangential direction is given by the following constitutive relation - with Young’s modulus E and Poisson’s ratio ν:

Eq 3

Finally, solving for unknown pressure as a function of hoop strain:

Eq 4

Resistance of a conductor of length L, cross-sectional area A, and resistivity ρ is

Eq 5

Consequently, a small differential change in ΔR/R can be expressed as

Eq 6

Where ΔL/L is longitudinal strain ε, and ΔA/A is –2νε where ν is the Poisson’s ratio of the resistive material. Substitution and factoring out ε from the right hand side leaves

Eq 7

Where Δρ/ρε can be considered nearly constant, and thus the parenthetical term effectively becomes a single constant, the gage factor, GF

Eq 8

For Wheat stone bridge:

Eq 9

Given that R1=R3=R4=Ro, and R2 (the strain gage) = Ro + ΔR, substituting into equation above:

Eq9

Substituting e with respective stress-strain relation

Eq 10

part b

Since, axial strain(1-2v) < hoop strain (2-v). V out axial < V out hoop.

Hence, dV hoop < dV axial.

part c

Given data:

P = 253313 Pa

D = d + 2t = 0.09013 m

t = 65 um

GF = 2

E = 75 GPa

v = 0.33

Use the data above and compute Vout using Eq3

Eq 11

Download docx

3 0

3 years ago