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Almost all are electric today, but the very quiet running hydraulic elevators have madce a surprising come-back in Path stations, Book stores, and the Business-science (Altman) branch of the NYPL. They are essentially huge hydraulic jacks, like those in gas stations, and the elevator cab or car is at the apex of the Jack. They only use power on the ascent cycle. so are efficient, the jack is (devalved) for the descent.
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Why is electrical power required at all when the elevator is descending?
Elevators may be a cable type, or a hydraulic type. With a cable type, a counterweight balances the weight of the car, The motor moves the cables that pull the balanced car up or down the shaft. The hydraulic type is used for many low elevators (4 floors or less) A motor turns a hydraulic pump that moves a piston up or down, moving the car up or down.
Applications of induction motor?
A single phase induction motor is mainly used in fans.It is capacitor start capacitor run induction motor.In three phase induction motor squirrel cage induction motor is mainly used in elevators,lifts,cranes.slip ring induction motor is mainly used in electrically driven ships.
What type of motor is used in refrigerator?
stepper motor
How many floors does the Bristol Motor Speedway elevators go to?
Four floors
Type of dc motor used by fan?
Synchronous motor or induction motor
What type of motor is used in watch?
mini stepping motor
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ac motor
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ersal motor
What type of motor used under the water?
It is submersible motor.
What type of motor used in sony DVD?
stepper motor
What type of motor used in exhaust fan?
Induction motor
What type of motors are used on lifts?
dc series motor
