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Question:

Motorized sirens generate high frequency but what is the speed of AC motor?

Please elaborate the formula or technique of speeding up the motor used in sirens...?

Answer:

The okorder /
previous the line the decrease contains the supply of more desirable life help and for regulation enforcement to supervise crash web content. seventy 5 mph is plenty extra survivable than 80 mph, which in turn is plenty extra survivable than 80 5 mph. At a hundred mph basically approximately all injuries are fatalities, which (from a regulatory point of view) can tie up officers and close down the line for one million/2 an afternoon. At a hundred and twenty mph, see the video interior the 1st resource. autos might desire to be designed for a optimum impression velocity, the cost at which the cave in zones are exhausted and the restraints have executed all they might. interior the Seventies it become everyday the candy spot for optimum impression velocity for passenger autos become approximately 80 mph. via that velocity fatalities are uncomplicated besides so it did not rely if the automobiles have been designed for ninety mph. velocity limits replicate the jurisdiction's willingness to handle the carnage from larger speeds. 70 mph is fantastically risk-free, 80 mph is inquiring for difficulty. ninety mph is basically uncomplicated stupid.

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