Agreed- This is BS, You are really messing things up for people that are preparing for exams. I hope you are a just mistaken and not trying to decieve people. That would be cruel and you my friend would be a seriously messed up person in the cabeza. Not funny- simply stupid.
The correct answer to this question is B, short circuited. The short circuit allows the l. motor to be started. The synchronous motor is an AC motor, which is synchronized the a supply current's frequency. There are various types of synchronous motors, including reluctance motors, permanent-magnet motors, and DC excited motors.
The speed of these motors is measure in revolutions per minute, by using the formula Ns = 60 f/p = 120 f/p.These motors are the most used in the AC motors. Synchronous motors can be found in a number of devices such as steppers, robots, turntables, and ball mills.
A is the proper answer to this. The main function of the transformer is to change the level of voltage. Take note that transformers can be used both ways. There are times when they are used to increase the voltage. Sometimes, they are used to lower the voltage. This electrical device is considered to be very important.
The transformer has the tendency to burst when it has become fully loaded for a long time. If this will be done often, the transformer will not last for a long time and would need to be replaced. Proper usage of electricity is important so that this situation can be avoided.
The correct answer is option D.
Lead sulfate is the end state of electrolyte (liquid) when a 12v lead acid battery is discharged.
When a battery is being discharged, the sulfuric acid in the electrolyte is being depleted so that the electrolyte look more like water.
This electrolyte has charged ions of sulfate and hydrogen, as the sulfate ions are negatively charged, and the hydrogen ions are positively charged.
The remaining sulfate combines with the active materials on the plate to form lead sulfate. The reaction of the positive ions and the negative ions form the lead sulfate.
3 mechanical horsepower is equivalent to 2237.1 watts. A lot of people say that one horsepower is equivalent to 745.7 watts so you just have to do that math. Horsepower can be used in order to describe the power of certain items. For example, if you say horsepower and you will relate it to cars, this means speed.
If you would use horsepower and connect it to air conditioning units, this means the power of the units in order to improve the temperature of a room depending on its size. Horsepower will matter a lot but it should be remembered that more horsepower means using more watts as well.
This is difficult to answer without the official textbook name. Industry wise, this will probably fluctuate from brand to brand as to how much protection is offered, but the standard will be the same. Depending on how old this particular version of this textbook is, this information could even be out of date, which would be bad for those using this book and getting ready to go into the field.
However, the answer given here is “0.37kW”, given by Williams. This might be correct, but I cannot verify this. Again, without the name of the textbook, or at least the authors, this will not be easy to verify. Different companies have different standards, and almost none are the baseline federal guideline.
There are some people who are not too sure about the ratio in general. They do not understand what this means. The fact that this ratio is used means that the answer is letter B. The primary ratio is 20 times greater as compared to the secondary. There are some people who become confused with this because grammatically, the ratio should be written 1:20.
Nevertheless, this is something that you should understand especially if you are going to work with transformers. A transformer is going to be very useful for increasing or decreasing the amount of electricity used. The ratio is normally used when there are different values that are being compared.
The correct answer to this question is C.An ambient temperature of 40 degrees Celsius. The maximum current carrying capacity of the cable under normal conditions is how a current cable rating is determined. There are three types of cable rating classifications. The first is ordinarily current carrying capacity, which allows the cable to operate in minimum temperatures.
Then, there is over current rating, which is based on the thermal conditions of the cable. These conditions can include ground and air temperatures. The last type of rating is short circuit ratings, in which the current flow is multiplied by the current's full load.