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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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Using the sequential method, Pone Hill Company allocates Janitorial Department costs based on square footage serviced. It alloca

Tpy6a [65]

Answer:

10% of the Janitorial Department's $450,000 costs is allocated to the Cutting Department

Explanation:

Given:

Costs Square Feet Number of Employees

Janitorial Department $450,000 100 20

Cafeteria Department $200,000 10,000 10

Cutting Department $1,500,000 2,000 60

Assembly Department $3,000,000 8,000 20

Cafeteria Cutting Assembly Total

Department department department

Square feet 10,000 2,000 8,000 20,000

% of allocation 50% 10% 40%

$\frac{10,000}{20,000}$ × 100 $\frac{2,000}{20,000}$ × 100 $\frac{8,000}{20,000}$ × 100

Hence, % usage by the cutting department is 10%

5 0

3 years ago

Ellie has been working for an engineering firm and earning an annual salary of $80,000. she decides to open her own engineering

goldenfox [79]

Ellie would have annual expenses of $15000+$3000+$1000+$1200+$35000=$55,200. If she cashed in her $20.000 deposit then her balance owing would be $35,200 so she would have to make at least this much or preferably the $55,200 to break even.,

7 0

3 years ago

The accounts used by a business can be kept on pages or cards, which are kept together in a book or file called a(n) ___________

mel-nik [20]

The accounts used by a business can be kept on pages or cards, which are kept together in a book or file called .. Ledger.

8 0

2 years ago

A person whose license has been cancelled or revoked, whether by voluntary action or by disciplinary action of the Board, may af

butalik [34]

Answer:

The appropriate fill-in-the-blank is 05 years. Thus the statement becomes

A person whose license has been cancelled or revoked, whether by voluntary action or by disciplinary action of the Board, may after <u>05</u> years from the effective date of such cancellation or revocation, petition the Board for reinstatement of the license, unless another time is provided in the cancellation or revocation order, or unless no provision was made in the order for reinstatement. This section does not apply to licensees who let their licenses lapse for non-payment of renewal fees or licensees against whom a cancellation or revocation proceeding is not pending before the Board or in any other jurisdiction.

Explanation:

According to the KRS 335.360, A person whose license has been revoked is eligible to apply for reinstatement after 05 years.

4 0

3 years ago

Based on the cost, the process that is best suited for the current contracted volume is

Vsevolod [243]

Answer:

Force Measurement System

Explanation:

(FMS) Hope this helps!

5 0

2 years ago