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3 years ago

Explain the relationships among speed, frequency, and the number of poles in a three-phase induction motor

1 answer:

5 0

The synchronous speed (rpm) equals 60 times the frequency divided by the number of pole pairs. For 50Hz, a two-pole motor will have a synchronous speed of 3000 rpm, a four-pole motor of 1500 rpm.

The actual speed is a few percent lower due to the slip of the asynchronous motor.

The slip increases with the torque, typical values are 5–10%. The rated speed for a four-pole motor at 50Hz will thus be something like 1360 rpm. At no-load, the slip is very small.

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When the Fed buys securities from the public, banks' reserves ________ and the quantity of money ________.

kow [346]

When Fed buys securities from the public, banks' reserves increases and the quantity of money reduces in supply.

<h3>What are Securities?</h3>

Securities simply put are assets that has monetary values like bonds, stocks and they can be traded.

In recent times, people enjoy the digital form of money/securities like cyptocurrencies.

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2 years ago

During 2022, Crane Company entered into the following transactions.

Anastasy [175]

Answer:

Assets = Liabilities + Stockholders' Equity = $206,670

Explanation:

Note: See the attached excel file for the analysis of the tabular analysis of the effect of each transaction on the accounting equation.

From the attached excel file, we have:

Assets = = – $172,670 + 68,620 + $310,720 = $206,670

Liabilities = $68,620

Stockholders' Equity = $138,050

Liabilities + Stockholders' Equity = $68,620 + $138,050 = $206,670

Therefore, we have:

Assets = Liabilities + Stockholders' Equity = $206,670

Download xlsx

4 0

3 years ago

Sheryl Hansen started a business on May 1, 20--. Analyze the following transactions for the first month of business using T acco

slava [35]

Answer:

Sheryl Hansen

T- Accounts

Cash

Account Titles Debit Credit

a. Sheryl Hasen, Capital $3,100

b. Equipment $500

d. Accounts Payable 300

e. Sheryl Hasen, Drawings 700

Sheryl Hasen, Capital

Account Titles Debit Credit

a. Cash $3,100

Equipment

Account Titles Debit Credit

b. Cash $500

c. Accounts Payable 800

Accounts Payable

Account Titles Debit Credit

c. Equipment $800

d. Cash $300

Sheryl Hasen, Drawings

Account Titles Debit Credit

e. Cash $700

Explanation:

a) Data and Analysis:

a. Cash $3,100 Sheryl Hasen, Capital $3,100

b. Equipment $500 Cash $500

c. Equipment $800 Accounts Payable $800

d. Accounts Payable $300 Cash $300

e. Sheryl Hasen, Drawings $700 Cash $700

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3 years ago

8. Suppose the total cost function is as follows: TC= x^3/3 -x^2+11x

elena55 [62]

At 1.5 the average total cost is a minimum and the total cost will be 10.25 where the TC = total cost; x = output (in 1,000 units)

<h3>What are maxima and minima?</h3>

Maxima and minima of a function are the extremes within the range, in other words, the maximum value of a function at a certain point is called maxima and the minimum value of a function at a certain point is called minima.

We have a total cost function:

TC = x³/3 - x² + 11x

Average total cost:

$\rm F\left(x\right)=\dfrac{\left(\dfrac{x}{3}^3-\:x^2\:+\:11x\right)}{x}$

Differentiating with respect to x and equating to x

d(F(x))/dx = 0

We will get:

x = 1.5

F'(1.5) > 0

At 1.5 the average total cost is a minimum.

Thus, at 1.5 the average total cost is a minimum and the total cost will be 10.25 where the TC = total cost; x = output (in 1,000 units)

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2 years ago

Kevin wants to buy a house that costs $350,000. Kevin will need to go to a bank and obtain a mortgage in order to purchase the h

Anestetic [448]

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3 years ago