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The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge. This machine consists of a long arm, to one end of which is attached a chamber in which the astronaut sits. The other end of the arm is connected to an axis about which the arm and chamber can be rotated. The astronaut moves on a circular path, much like a model airplane flying in a circle on a guideline. The chamber is located 15 m from the center of the circle. At what speed must the chamber move so that an astronaut is subjected to 8.9 times the acceleration due to gravity?
to find a horizontal force acting on a body which is inclined to the plane with a particular angle
Q. Describe Direct extrusion? • Direct extrusion, also known as forward extrusion, is the most common extrusion process. • It works by placing the billet in a heavy walle
Calculate Machining Time and Material Removal Rate A hole of 40 mm diameter and 50 mm depth is to be drilled in a mild steel component. The cutting speed can be taken as 65 m/
Yoke or magnetic frame It is the outer cover of the machine. An even number of pole cores are bolted to the yoke. Its serves the following purposes 1. It gives mechanical su
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Illustrate in brief the types of power plant? Illustrate the factor to be considered for site selection in hydro power plant? a) Compare stream power plant with hydro power p
A modified NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; inverting bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make the
Point of inflexion: Define the term point of contraflexure or point of inflexion. Also define point of zero shear force? Sol.: The points (other than extreme ends of beam)
Flash Butt Welding-Flashing The phenomenon of flashing is of extreme importance in achieving satisfactory welds. Flashing can begin only after a molten bridge has been formed s
Standard for the specific standard technical areas These norms are based on previously described models. Typical categories of these norms are: (a) drafting, which describe
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