EPICYCLIC TRAIN DYNAMOMETER PDF
Table, Create, Delete, Add, Rows, Column, Delete, Row, Column, Add, Simple, XY, Pie, Chart. Data, Import, Export. Table, Create, Delete, Add, Rows, Column. FIGURE Epicyclic train dynamometer. direction. The power is transmitted from gear B to D through the intermediate gear C which revolves freely on a pin. This type of dynamometer can be classified as follows: 1. Epicyclic train dynamometer 2. Belt transmission dynamometer 3. Torsion dynamometer. EpicydiC train.
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A little consideration will show that when the power is being transmitted, then the driving end of the shaft twists through a small angle relative to the driven end of the shaft.
A weight w is placed at the smaller end of the lever in order to keep it in position. If the eye piece is now moved round by an amount equal to the lag of disc B, then the slot in the eye piece will be opposite to the slot in disc B as shown in Figure d and hence the eye piece receives flash of light.
Share buttons are a little bit lower. We think you have liked this presentation. Auth with social network: Nirmal Kushwaha Mechanical Deptt. In the transmission dynamometers, the energy is not wasted in friction but is used for doing work.
The upper end of the ropes is attached to a spring balance while the lower end of the ropes is kept in position by applying a dead weight as shown in Figure. It is thus obvious that the frame causes movement about E in the anticlockwise direction.
A belt dynamometer is introduced to measure directly the difference between the tensions of the belt, while it is running. The pulleys A and B are connected ydnamometer means of a continuous belt passing round the two loose pulleys C and D which are mounted on a T-shaped frame.
In order to balance it, a weight W is applied at a distance L from E on the frame as shown in Figure.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha – ppt video online download
Registration Forgot your password? The annular gear is also keyed to the driving shaft and rotates in clockwise direction. My presentations Profile Feedback Log out. Bhaumik patel Nilay patel. The tangential effort P exerted by the spur gear on the pinion and the tangential reaction of the annular gear on the pinion are equal.
A bright electric lamp L, behind the disc A, is fixed on the bearing of the shaft. The energy or power produced by the engine is transmitted through the dynamometer to some other machines where the power developed is suitably measured. If you wish to download it, please recommend it to your friends in any social system.
In the absorption dynamometers, the entire energy or power produced by the engine is absorbed by the friction resistances of the brake and is transformed into heat, during the process of measurement.
A helical spring is provided between the nut and the upper block to adjust the pressure on the pulley to control its speed. Engineering College Palanpur Name: Since the tension in the tight side of the belt T1 is greater than the tension in the slack side of the belt T2 ,so the total force acting on the pulley C i. For a solid shaft of diameter D, the polar moment of inertia for a hollow shaft of external diameter D and internal diameter d, the polar moment of inertia, From the above torsion equation the power transmitted.
The frame traon pivoted at E and its movement is controlled by two stops S,S.
Two stops S, S are provided to limit the motion of the lever. The amount of twist depends upon many factors tarin as torque acting on the shaft T length of the shaft l diameter of the shaft D modulus of rigidity C of the material of the shaft.
To make this website work, we log user data and share it with processors. Rotational Dynamics In pure translational motion, all points on an object travel on parallel paths. It consists of one, two or more ropes wound around the flywheel or rim of a pulley fixed rigidly to the shaft of an engine. Due to epicycilc, the light does not reach to the eye piece as shown in Figure c.
About project SlidePlayer Terms of Service. The most general motion is a combination of translation.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha
The spur gear is keyed to the engine shaft and rotates in anticlockwise direction. A counter weight is placed at the other end of the lever which balances the brake when unloaded.
The pinion or the intermediate gear meshes with both the spur and annular gears. Prony brake dynamometer 2. R And power transmitted.
Epicyclic-train Dynamometer-torque and power transmitted ()
Published by Shanna Daniel Modified over 2 years ago. It consists of a pulley A called driving pulley ttain is rigidly fixed tothe shaft of an engine whose power is required to be measured.