A motor drive has three different loads, first is rotational motion and coupled directly to the motor with the torque of 3 Nm. Second a rotational load is connected to the first load through a reduction gear with the ratio of 1:4. This load has a moment of inertia of 12 kg.m² and torque of 8 Nm. The third load is connected to the second rotational load that has a translational motion and consists of 1250 kg weight to be lifted up at a uniform speed of 115 meter per-minutes. The gear and translational system have efficiency of 85% and 90%, respectively. At this condition, the motor has an inertia of 0.3 kg.m² runs at a constant speed of 1350 rpm. If the transmission losses are neglected, (i) draw and label the block diagram to represent the drive system. (ii) calculate the equivalent inertia referred to the motor shaft. (iii) determine the total developed torque from the motor. (iv) examine the developed power from the motor.

A motor drive has three different loads, first is rotational motion and coupled directly to the motor with the torque of 3 Nm. Second a rotational load is connected to the first load through a reduction gear with the ratio of 1:4. This load has a moment of inertia of 12 kg.m² and torque of 8 Nm. The third load is connected to the second rotational load that has a translational motion and consists of 1250 kg weight to be lifted up at a uniform speed of 115 meter per-minutes. The gear and translational system have efficiency of 85% and 90%, respectively. At this condition, the motor has an inertia of 0.3 kg.m² runs at a constant speed of 1350 rpm. If the transmission losses are neglected, (i) draw and label the block diagram to represent the drive system. (ii) calculate the equivalent inertia referred to the motor shaft. (iii) determine the total developed torque from the motor. (iv) examine the developed power from the motor.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

A motor drive has three different loads, first is rotational motion and coupled
directly to the motor with the torque of 3 Nm. Second a rotational load is
connected to the first load through a reduction gear with the ratio of 1:4. This load
has a moment of inertia of 12 kg.m² and torque of 8 Nm. The third load is
connected to the second rotational load that has a translational motion and consists
of 1250 kg weight to be lifted up at a uniform speed of 115 meter per-minutes.
The gear and translational system have efficiency of 85% and 90%, respectively.
At this condition, the motor has an inertia of 0.3 kg.m² runs at a constant speed of
1350 rpm. If the transmission losses are neglected,
(i) draw and label the block diagram to represent the drive system.
(ii) calculate the equivalent inertia referred to the motor shaft.
(iii) determine the total developed torque from the motor.
(iv) examine the developed power from the motor.

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