Once upon a time there lived a lovely princess with fair skin and blue eyes. She was so fair that she was named Snow White. Her mother died when Snow White was a baby and her father married again. This queen was very pretty but she was also very cruel. The wicked stepmother wanted to be the most beautiful lady in the kingdom and she would often ask her magic mirror, “Mirror! Mirror on the wall! Who is the fairest of them all?” And the magic mirror would say, “You are, Your Majesty!” But one day, the mirror replied, “Snow White is the fairest of them all!” The wicked queen was very angry and jealous of Snow White. She ordered her hunt
Answer:
Explanation:
The number of deaths of infants under one year old in a given year per 1,000 live births in Bangladesh is 45.67 while in The United States it is 6.17. The life expectancy at birth in Bangladesh is 70.65 while in The United States it is 79.56. In Bangladesh it is 32.10 while in The United States it is 45.00.
plz mark as brainliest
By collecting them all in one box at a time
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.
