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1. In geared motors, what do AGMA and AGMA Class stand for ? In geared motors, Agma-means American Gear Manufactures Association. Agma Class : I. Light duty II. Medium duty III. Heavy duty 2. What is the difference between
Motorised Gear Units with same KW rating and RPM but different
frame Frame sizes changes according to AGMA class duties. 3. Grade of oil and quantity required for use in MGU. Grade of oil - 460 Servomesh/Amocam/Enklo. Quantity varies according to frame size. DC Motors 1. What are the differences between laminated Yoke and Solid Yoke D.C. Motor ? With same frame size, higher KW rating can be acommodated in Laminated Yoke design than solid Yoke design due to less hysterisis losses. 2. What is the Max. Safe speed of a D.C. Motor? The motors are suitable for a speed varication of 1 : 50 at constant torque by armature voltage control. 3. What is the method for reducing the speed of a D.C. Motor? Armature voltage control. 4. What is the method for increasing the speed of the D.C. Motor ? By field weakening. 5. Can a D.C. Motor be used in B5 configuration without conversion ? Lam Yoke - Possible. 6. Can a D.C. Motor be supplied with compound winding instead of Shunt winding. Yes. 7. Are D.C. Motors with double shaft extention available? Yes, at extra cost. |