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VashaNatasha [74]
3 years ago
10

What are the desired characteristics or values for the following parameters of an ideal amplifier?o Phase change as a function o

f the log of the frequency o Common Mode Rejection Ratioo Input Resistanceo Output Resistance
Engineering
1 answer:
kvv77 [185]3 years ago
4 0

Answer and Explanation:

- Phase change as a function of the log of the frequency

The phase shift should be independent of the frequency of the input signal. It should have an Infinite bandwidth with zero phase shift

- Common Mode Rejection Ratio

An ideal amplifier has Infinite common-mode rejection ratio (CMRR). A perfect operational amplifier amplifies only the voltage difference between its two inputs, completely rejecting all voltages that are common to both.

- Input Resistance

Infinite input impedance and so, zero input current & Zero input offset voltage.

The differential input impedance of the operational amplifier is defined as the impedance between its two inputs; the common-mode input impedance is the impedance from each input to ground.

And the impedance between its inputs should be infinite.

- Output Resistance

Zero output impedance and Infinite output voltage range.

Output Resistance leads to voltage drop. Thee voltage drop across the output impedance effectively reduces the open loop gain. So, the optimal value for this should be zero.

N.B - For AC circuits such as this one being discussed, resistance is known as impedance.

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The hull of a vessel develops a leak and takes on water at a rate of 57.5 gal/min. When the leak is discovered the lower deck is
leva [86]

Answer:

It will be around 146,27 min since the pump is turned on until the deck is clear of the water.

Explanation:

When the leak is discovered and the pump is turned on, the lower deck is already submerged and the leak is not fixed; then, in order to have the deck clear of water, the bilge pump has to remove the <em>accumulated water </em>(V_{0}) and the <em>water that is taking on</em> (r_{in}*t) through the leak. We can represent this mathematically as follow:

V_{0} +r_{in} *t-r_{out}*t=0  <em>Equation 1</em>

Where:

V_{0}: is the accumulated water when the leak was discovered

r_{in}: is the takes on rate through the leak = 57.5 gal/min

r_{out}: is the removing rate of the bilge pump = 73.8 gal/min

t= is the time since the pump is turned on until the deck is clear of water.

To calculate the accumulated water (V_{0}), we will model the lower deck as a flat-bottomed container with a bottom surface area of 510 ft^{2} and straight vertical sides. Knowing that the level submerged is 7.5 inches, and performing the corresponding unit conversions, we obtain:

V_{0}= bottom surface area * lever submerged

V_{0}= 510ft^{2}*7.5 in*\frac{1ft}{12in}=318.75 ft^{3}*7.48\frac{gal}{1ft^{3}}=2384.25 gal <em>Equation 2</em>

Solving equation 1 for time (t), and replacing the value obtained in equation 2, we get:

t=\frac{V_{0}}{(r_{out}-r_{in})} =\frac{2384.25 gal}{(73.8-57.5)gal/min}=146,27 min

8 0
3 years ago
Suppose that on your 21st birthday you are given a $1,000,000 trust fund. If you can earn 4% in annual compound interest, how mu
Elodia [21]

Answer:

annual payment  =  $40000

Explanation:

given data

annual compound interest = 4%

fund value = $1,000,000

to find out

annual payment

solution

we get here annual payment  that is express as

annual payment  = fund value × annual compound interest  ..................1

put here value we get

annual payment  =  4%  × $1,000,000

annual payment  = 0.04 × $1,000,000  

annual payment  =  $40000

8 0
3 years ago
An electric winch operates on 140 volts​ [V] and draws 6 amperes​ [A] of current. The winch has an efficiency of 64​%. The winch
Elis [28]

Answer:

Explanation:

efficiency = (energy output / energy input)

energy input = ivt where i is current = 6 A, v is volts = 140 and t time = 11 seconds

energy input = 6 × 140 × 11 = 9240 J

energy output = 0.64 × 9240 = 5913.6 J

510 pound-force = 2268.593 N

at height h, potential energy = mgh = 5913.6 J

2268.593 × h = 5913.6

h = 5913.6 / ( 2268.593) = 2.61 m

3 0
3 years ago
A design that is found to have flaws and must be redesigned and retested is an example of what
Aleksandr [31]

Answer:

A. prototype

Explanation:

7 0
4 years ago
Dimensioning a drawing means​
lara [203]

Answer:

Dimensioning a drawing refers to drawing a dimension for every side of the figure.  It means to write the lengths of every side in the figure(2D or 3D)

<em>Hope it helps <3</em>

7 0
3 years ago
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