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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:

c. the trade balance and the exchange rate.

Explanation:

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What sets these two models apart is that in an open economy, both imports and exports are allowed, so that countries necessarily have to trade in more than one currency, so the exchange rate must be examined. In addition, business transactions are recorded in a balance of payments. So these are the two concepts that are not tried in a closed economy analysis, but are introduced in an open economy.

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Which three factors decrease because of protectionism?
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competition, goodwill with trade partners, and importation of goods

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3 years ago
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$47439.50

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if barbara falcon invests $16,751.84 now and she will receive $30,000 at the end of 10 years, what annual rate of interest will
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9% of annual rate of interest will she be earning on her investment .The price of borrowing money is reflected in the interest rate on a credit card.

<h3>What is annual  rate interest ?</h3>

The price of borrowing money is reflected in the interest rate on a credit card. We utilize the annual percentage rate for this (APR). On the majority of credit cards, you can avoid paying interest on purchases if you pay your balance in full each month by the due date.

The term annual percentage rate of charge refers to the interest rate for an entire year rather than just a monthly fee or rate as applied on a loan, mortgage loan, credit card, etc. It can also be referred to as a nominal APR or an effective APR. It is an annual rate of a finance charge.

To learn more about annual rate of interest refer to:

brainly.com/question/15728540

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When managers work on creating conditions and systems to ensure that everything and everyone works together to achieve the organ
SVETLANKA909090 [29]

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