work=mass x gravity x height that's the answer for part a
for part b about the power its just work/time therefore (mgh)/time is the answer for b
The frequency of the applied voltage is constant.
Elevator counterweights help balance the weight of the elevator car, making it easier for the motor to lift and lower the car. This balancing act reduces the amount of energy needed to operate the elevator, resulting in a smoother and more efficient ride for passengers.
Because it raises loads against the force of gravity, the energy produced, which is the same as the work done, is Force x Distance. The downward force on any mass M is MG Newtons, so the work done in raising it a height H meters is MGH Joules.
counterweight carried by an elevator cable to balance the weight of an elevator cab; the counterweight travels upward when the cab travels downward, and vice versa; usually composed of steel plates stacked within a frame.
The speed of a split-phase motor is directly proportional to the frequency of the power supply, not the voltage. As long as the frequency remains constant, the speed of the motor will remain relatively stable regardless of minor fluctuations in voltage within normal operating limits.
no,elevetor motor depends on size of elevetor & how many persons are accomodate in elevetor.
An electric elevator operates using a system of cables, pulleys, and a motor. The motor, typically located at the top of the elevator shaft, drives a sheave (a pulley) that moves the elevator car vertically by winding or unwinding the cables attached to the car. When the motor runs in one direction, the elevator ascends, and when it runs in the opposite direction, the elevator descends. Safety mechanisms, such as brakes and limit switches, ensure the elevator operates safely and stops at designated floors.
The constant humming sound from the machine could be caused by a malfunctioning motor or fan, loose components, or an issue with the power supply.
The Synchronous motors will operate at a constant speed from noload to fullload. Even it is classified as an AC motor, we have to fed the motor both AC and DC supplies. That we have to supply DC to the Field (Normally Rotor) and AC to the Armature (Normally Stator).
Dc shunt motor is constant speed motor.Its speed is constant with armature current.This shunt motor is used in paper mills and drilling machines
yes the motor will run but will draw more current and the torque will be not constant means not smooth due to unbalanced current
Dc shunt motor is constant speed motor.Its speed is constant with armature current.This shunt motor is used in paper mills and drilling machines
The frequency of the applied voltage is constant.
The phase voltage is usually constant and determined by the supply voltage.
just connect the supply of motor to power supply..and run..then ovserve the motor sounds,temperature and vibration.
Passenger elevators are big pulleys powered by a motor with 6-8 cables or more that pull the elevator cab or the counter weight letting the elevator go up or down.
An elevator pit typically contains the elevator buffer, which absorbs energy in case of a sudden stop or free fall, the counterweights, and the guide rails that ensure the elevator cab moves smoothly. Additionally, it may also house the hydraulic equipment or motor that powers the elevator.