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2 years ago

The flow between two infinitely flat parallel plates displays a parabolic profile, and is called plane Poiseulle flow.

Engineering

1 answer:

murzikaleks [220]2 years ago

6 0

Answer:

a. True

Explanation:

The study of fluids in a state of rest or in motion and the forces involved in it is called fluid mechanics. Fluid mechanics has a wide range of applications in the field of mechanical engineering as well as civil engineering.

When we study the flow of fluid between any two flat plates that is indefinitely flat and is parallel, the flow of the fluid is known as plane Poiseulle flow. The profile of a plane Poiseulle flow is parabolic.

The velocity profile of a plane Poiseulle flow is :

$\frac{u(y)}{U_{max}}=1-\left(\frac{2y}{h}\right)^2$

Thus the answer is TRUE.

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A manager who focuses on the employees who enable a company to do business is human resource management. True True False False

nydimaria [60]

Answer:

False.

Explanation:

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2 years ago

) Assuming different AM regulations; the receiver is using mixer with subtracting format. The frequency selectivity ratio is app

Zarrin [17]

Answer:

$F=710KHZ$

Explanation:

From the question we are told that:

Frequency selectivity ratio $R=10$

AM range 750 kHz to 2600 kHz

Therefore Bandwidth is

$B=2100-680$

$B=1420KHZ$

Generally the equation for The intermediate frequency is mathematically given by

Intermediate frequency=\frac{Bandwidth}{2}

$F=\frac{B}{2}$

$F=\frac{1420}{2}$

$F=710KHZ$

8 0

2 years ago

What is the major drawback to use whiskers as a dispersed agents in composites? a)- High price b)- Large length to diameter rati

artcher [175]

Answer: C) a&c

Explanation: Composite materials are the materials which are made up of the two or more material of different properties.They are usually having properties like high hardness,low in density,no dissolving into each other etc. Whiskers as a dispersing agent in composite materials are usually not preferred because they are expensive as well as they are not easy to disperse in the composite material.Thus option (c) is the correct answer.

7 0

3 years ago

Suppose that the time (in hours) required to repair a machine is an exponentially distributed random variable with parameter ???

Andrej [43]

We need to define the variables,

So,

$F_x (x) = 1-e^{-\lambda x}\\F_x (x) = 1-e^{-0.5x}$

Therefore, the probability that the repair time is more than 4 horus can be calculate as,

$P(x>4)=1-P(x4)= 1-F_x(4)\\P(x>4) = 1-e^{-0.5*4}\\P(x>4) = 1-0.98\\P(x>4) = 0.018$

The probability that the repair time is more than 4 hours is 0.136

b) The probability that repair time is at least 12 hours given that the repair time is more than 7 hoirs is calculated as,

$P(x\geq 12|x>7)=P(X\geq7+5|x>7)\\P(x\geq12|x>7)=P(X\geq5)\\P(x\geq12|x>7)=1-P(x\leq 5)\\P(x\geq12|x>7)=1-e^{-0.5(2)}$

$P(x\geq 12|x>7)=0.6321$

The probability that repair time is at least 12 hours given that the repair time is more than 7 hours is 0.63

3 0

3 years ago

A 360 kg/min stream of steam enters a turbine at 40 bar pressure and 100 degrees of superheat. The steam exits the turbine as a

Brrunno [24]

Answer:
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2 years ago