1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
podryga [215]
3 years ago
8

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

Business
1 answer:
Triss [41]3 years ago
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.
You might be interested in
The simple structure usually depends on ________ to coordinate work activities, so it is very difficult to operate as the compan
ivanzaharov [21]

Answer:

Simple structure depends on owner supervision to look after the all activities that performed during the task.

Explanation:

Simple structure depends on owner supervision to look after the all activities that performed during the task. Therefore it become sometimes  more difficult to look on every activities and this become more critical and complex when company grows.

it is very simple design in any business. as in case of small business where owner itself act as manager to operate all activities at his/her level

7 0
3 years ago
A firm currently has a debt-equity ratio of 1/2. The debt, which is virtually riskless, pays an interest rate of 6%. The expecte
Svetradugi [14.3K]

Answer:

Expected return on equity is 11.33%

Explanation:

Using Weighted Average Cost Capital without tax formula, overall rate of return is given by the formula:

WACC=(Ke*E/V)+(Kd*D/V)

Kd is the cost of debt at 6%

Ke is the cost of equity at 12%

D/E=1/2 which means debt is 1 and equity is 2

D/V=debt/debt+equity=1/1+2=1/3

E/V=equity/debt+equity=2/1+2=2/3

WACC=(12%*2/3)+(6%*1/3)

WACC=10%

If the firm reduces debt-equity ratio to 1/3,1 is for debt 3 is for equity

D/V=debt/debt+equity=1/1+3=1/4

E/V=equity/debt+equity=3/1+3=3/4

WACC=10%

10%=(Ke*3/4)+(6%*1/4)

10%=(Ke*3/4)+1.5%

10%-1.5%=Ke*3/4

8.5%=Ke*3/4

8.5%=3Ke/4

8.5%*4=3 Ke

34%=3 Ke

Ke=34%/3

Ke=11.33%

4 0
3 years ago
(True) or (False)? A chart of accounts is a list of all accounts with the detail of every transaction, as well as the running ba
Kisachek [45]

Answer:

True

Explanation:

  • A chart of accounts is a list of all accounts with the detail of every transaction, as well as the running balances.

A chart of accounts (COA) is a financing tool that provided a list of every account in a system. Connected to those accounts is every detail of transactions made and running balances.

8 0
3 years ago
Assume interest rates on 10-year government Treasury Notes (T-Notes) and 10-year Corporate Bonds are as follows: T-Notes = 3.85%
goldenfox [79]

Answer:

The correct option is D,default risk differences

Explanation:

Default risk is the risk which stems from the fact that the borrower might fail to discharge its obligation in paying  interest and principal  as and when due as  contained in the debt contract agreement.

The investor is expected to be compensated for default risk,in other words,highly risky investment pays a spread over and above risk free investment return.

Government Treasury Notes are risk-free,pays zero compensation for default  risk, while corporate bonds that more riskier pays a little extra to entice investors to invest in their bonds,otherwise the planned amount expected from bond issuance would not be realized.

7 0
3 years ago
Calculate the cost variance if the cumulative earned value is $10 and the cumulative actual costs are $20.
masya89 [10]
$12 is the answer that you want
4 0
3 years ago
Other questions:
  • Vincent enjoys investing his money in ways that can generate a return. He realizes that also a chance that his investment will d
    12·1 answer
  • Which of the following should be shown on a statement of cash flows under the financing activities section? a.the proceeds from
    14·1 answer
  • During 2014 Carne Corporation transferred inventory to Nolan Corporation and agreed to repurchase the merchandise early in 2015.
    15·1 answer
  • The system that provides common industry definitions for Canada, Mexico, and the United States, which makes it easier to measure
    5·1 answer
  • Provide an example of one company that should employ the simple structure organizational configuration.
    8·1 answer
  • If someone has a power of attorney to sign the purchase agreement on behalf of the seller, which of the following would be the p
    14·1 answer
  • What are some examples of poor customer service you have encountered in the past, either as a
    8·1 answer
  • compare how goods and services are distributed and the freedom of consumers and producers in command economies and free market e
    10·1 answer
  • The ___________________________ monitors the sale and registration of vehicles and vessels within the state. A. Division of Driv
    9·1 answer
  • When the CPI increases from 200 in 2016 to 210 in 2017 and the nominal wage rate is constant at​ $10 an​ hour, the real wage rat
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!