Answer:
A key drawback with the use of tests to screen individuals for desirable characteristics is that It is a time-consuming procedure.
It is very important for the employees to know exactly what they must look into and assess the characteristics accurately. This process is very time consuming and takes up a lot of patience and resources to carry the tests.
A study that would need to occur quickly cannot indulge into this testing process because of it being very tedious and time consuming.
DC motors are usually seen in applications where the motor speed needs to be externally controlled. AC motors work best in applications where power performance is sought for extended periods of time. All DC motors are single phase, but AC motors can be single phase or three phase.
AC and DC motors use the same principle of using an armature winding and magnetic field except with DC motors, the armature rotates while the magnetic field doesn’t rotate. In AC motors the armature does not rotate and the magnetic field continuously rotates.
In some applications today, DC electric motors are replaced by combining an AC electric motor with an electronic speed controller, known as variable frequency drives. DC electric motors are replaced with an AC electric motor and an electronic speed controller because it is a more economical and less expensive solution.
DC electric motors have many moving parts that are expensive to replace, and DC electric motor repair is usually more expensive than using a new AC electric motor with an electronic controller.
In our experience, combining an AC motor and drive proves to be the most cost effective solution for mostapplications. When servicing our customers in the field, we often recommend looking at the SMVector Series Variable Frequency Drive in combination with a three phase AC motor.
The correct answer is a Credit Union.
Credit Unions are able to charge lower rates than a bank because of their structure. Banks are set up as a for-profit business, so they charge more in order to make themselves more profitable. Credit Unions are set up like cooperatives where the customers own them, or like a non-profit organization. This allows Credit Unions to charge lower rates. Additionally, the Credit Unions normally distributes the profit back to the customer.
Answer:
- <u><em>All real numbers except c = 0 and c = 3.</em></u>
Explanation:
The equation is:
Since c - 3, c, and c(c - 3) are he denominators, none of them can be equal to zero:
- c (c - 3) ≠ 0 ⇒ c ≠ 0 and c ≠ 3.
Now you can multiply both sides of the equation by the common denominator: c (c - 3):
That means the equality is valid for all real numbers for which it is defined, which is all real numbers except c = 0 and c = 3.
