ME2142-2 SPEED/POSITION CONTROL OF A DC MOTOR
Department of Mechanical Engineering
National University of Singapore
To become familiar with the operation of an armature-controlled DC motor.
To study the transient and ste
Moment of a Force
Find the moment of the force F about the point A.
We form the relative position vector
rB/A from A to a point B where the
force F acts through.
The moment, which is a vector, is
given by the cross-product
MA = rB/A F
ME3122 Quiz #2
Date/Time: 07 November (Saturday); 10:00AM
Venue: 1st Floor of EA Building: LT7A and ENGAUD (Engineering Auditorium).
Seats: Seats are arranged in groups. Groups
3A, 3C, 3G and 3H will be in ENG-AUD while
Groups 3B, 3D, 3E, 3F,
1. Two thousand bars 80mm diameter and 300mm long must be turned down to 65mm diameter
for 150mm of their length. The surface finish and accuracy requirements are such that a heavy
roughing cut (removing most of the material) followed by a light