A nut which is connected to a lead screw is moved in a horizontal plane against a force of 100KN at a speed of 4mm/sec by electric motor powered screw. The following data is given Single start square thread screw Pitch of the screw=6mm Outlet diameter of the screw =40mm Co-efficient of friction of the screw thread =0.15 Efficiency of the motor=85% Determine the power required and efficiency of the screw

A nut which is connected to a lead screw is moved in a horizontal plane against a force of 100KN at a speed of 4mm/sec by electric motor powered screw. The following data is given Single start square thread screw Pitch of the screw=6mm Outlet diameter of the screw =40mm Co-efficient of friction of the screw thread =0.15 Efficiency of the motor=85% Determine the power required and efficiency of the screw

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.

Question

A nut which is connected to a lead screw is moved in a horizontal plane against a force of 100kN
at a speed of 4mm/sec by electric motor powered screw. The following data is given
Single start square thread screw
Pitch of the screw=6mm
Outlet diameter of the screw =40mm
Co-efficient of friction of the screw thread =0.15
Efficiency of the motor=85%
Determine the power required and efficiency of the screw
The following data is refers to a screw jack.
The vertical load on the screw=20kN
Force applied at the lever end whose length=80cm
The mean radius of the screw-2.5cm
Pitch of the screw=1cm
Co-efficient of friction between the screw thread and the nut=0.15
Determine the force on the lever end while raising the load and efficiency of the screw jack

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