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Alekssandra [29.7K]
3 years ago
9

It's not a slot machine

Engineering
2 answers:
scoundrel [369]3 years ago
5 0
Maybe it’s a vending machine, I’m confused too
Setler [38]3 years ago
3 0
I believe it is choice a
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A 4-pole, 3-phase induction motor operates from a supply whose frequency is 60 Hz. calculate: 1- the speed at which the magnetic
DiKsa [7]

Answer:

The answer is below

Explanation:

1) The synchronous speed of an induction motor is the speed of the magnetic field of the stator. It is given by:

n_s=\frac{120f_s}{p}\\ Where\ p\ is \ the \ number\ of\ machine\ pole, f_s\ is\ the\ supply \ frequency\\and\ n_s\ is \ the \ synchronous\ speed(speed \ of\ stator\ magnetic \ field)\\Given: f_s=60\ Hz, p=4. Therefore\\\\n_s=\frac{120*60}{4}=1800\ rpm

2) The speed of the rotor is the motor speed. The slip is given by:

Slip=\frac{n_s-n_m}{n_s}. \\ n_m\ is\ the \ motor\ speed(rotor\ speed)\\Slip = 0.05, n_s= 1800\ rpm\\ \\0.05=\frac{1800-n_m}{1800}\\\\ 1800-n_m=90\\\\n_m=1800-90=1710\ rpm

3) The frequency of the rotor is given as:

f_r=slip*f_s\\f_r=0.04*60=2.4\ Hz

4) At standstill, the speed of the motor is 0, therefore the slip is 1.

The frequency of the rotor is given as:

f_r=slip*f_s\\f_r=1*60=60\ Hz

6 0
4 years ago
Given a series of numbers as input, add them up until the input is 10 and print the total. Do not add the final 10. For example,
valentinak56 [21]

Answer:

22

Explanation:

The question talks about a given program to which you input a set of numbers. Once you input number 10, the program stops receiving inputs and adds the numbers you previously inputed, except for the final 10 which only works as a stopping signal. So, imagine you are working on the program and input the numbers 8, 3, 11 and 10 consecutively. Once you input the 10, the program immediately adds the previous numbers: 8+3+11=22.

So the output should be 22.

4 0
4 years ago
Manufacturing employees who perform assembly line work are referred to as
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Answer:

C. assembly line workers.

Explanation:

8 0
3 years ago
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Answer:

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6 0
3 years ago
Consider Fe – 3.0 wt% C steel at a temperature just below the eutectic point. Determine the phase present in this alloy. Determi
Dmitry_Shevchenko [17]

Answer

Please see attachment for the answer. I solved it in its simplest form.

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