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.
Answer:Lack of Feasibility studies
Explanation:
He might experience obstacle if he choose not to understand the area and its demand by the people around the selected area.
Secondly is lack of capital to start up the business.
Answer:
B. $0.02
Explanation:
The computation is shown below:
Since the annual holding cost percentage is 10% and the cost of production is $5. So, the holding cost would be
= $5 × 10%
= 0.5
Now if the t-shirts run 25 times a year, so the holding cost would be
= 0.5 ÷ 25 times
= $0.02
Simply we compute the holding cost based on number of times the t-shirt turns in a year
All other information which is given is not relevant. Hence, ignored it
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