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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.
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Answer:

False

Explanation:

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Hence as the computers became popular, the typewriter went to the decline stage of product life cycle because there wasn’t much demand left for producing typewriters

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2 years ago
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2. If a company complies with government regulations, it incurs A. reputation costs. B. court costs. C. implementation costs. D.
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2 years ago
When senior managers of a construction firm gather information to evaluate whether supply trends will have a significant effect
serg [7]

Answer:

The correct answer is letter "A": True.

Explanation:

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6 0
3 years ago
Which of these is an example of a trade restriction?
Alex787 [66]

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5 0
2 years ago
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Steeler Corporation is planning to sell 100,000 units for $2.00 per unit and will break even at this level of sales. Fixed expen
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The company's variable expenses per unit is 1.25

<h3>What is breakeven?</h3>

Breakeven is a point at which neither profit nor loss is made. It is used to determine the number of units or dollars of revenue needed to cover total costs.

Number of units to sell = 100,000

Price per unit = 2

Fixed expense = 75000

At break even point :

Revenue = total expenses

Total expenses

= fixed cost + variable cost

Let variable cost = x

Revenue

= units to sell * price per unit

Revenue

= 100,000 * 2

= 200,000

Hence,

Fixed cost + variable cost = Revenue

75000 + x = 200,000

x = 200, 000 - 75000

x = 125,000

Variable cost = 125,000

The variable expense per unit is thus :

Variable expense / number of units

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= 1.25 per unit

Hence, the company's variable expenses per unit is 1.25

Learn more about break even here: brainly.com/question/9212451

7 0
2 years ago
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