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.
The energy or power produced by dynammoeter engine is transmitted through the dynamometer to some other machines where the power developed is suitably measured. The spur gear is keyed to the engine shaft and rotates in anticlockwise direction.
epicycilc The frame is pivoted at E and its movement is controlled by two stops S,S. Bhaumik patel Nilay patel. The annular gear is also keyed to the driving shaft and rotates in clockwise direction. Due to this, the light does not reach to the eye piece as shown in Figure c.
Epicyclic-train Dynamometer-torque and power transmitted ()
Rotational Dynamics In pure translational motion, all points on an object travel on parallel paths. A counter weight is placed epicyclif the other end of the lever which balances the brake when unloaded. Nirmal Kushwaha Mechanical Deptt. It consists of a pulley A called driving pulley which is rigidly fixed tothe shaft of an engine whose power is required to be measured. Prony brake dynamometer 2. Auth with social network: R And power transmitted. The amount of twist depends upon many factors such 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.
Published by Shanna Daniel Modified over 2 years ago. A helical spring is provided between the nut and the upper block to adjust the pressure on the pulley to control its speed. The pulleys A and B are connected by means of a continuous belt passing round the two epicjclic pulleys C and D which are mounted on epiccyclic T-shaped frame. In the transmission dynamometers, the energy is not wasted in friction but is used for doing work. About project SlidePlayer Terms of Service.
Share buttons are a little bit lower. For a solid shaft of diameter D, the polar moment of epicydlic 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 pinion or the intermediate gear meshes with both the spur and annular gears. The most general motion is a combination of translation. Two stops S, S are provided to limit the motion of the lever.
Dynajometer make this website work, we log user data and share it with processors. The upper block has a long lever attached to it and carries a weight W at its outer end. It consists of two discs A and B fixed on a shaft at a convenient distance apart Each disc has a small radial slot and these two slots are in the same line when no power is transmitted and there is no torque on the shaft. In order to balance it, a weight W is applied at a distance L from E on the frame as shown in Figure.
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 eipcyclic B as shown in Figure d and hence the eye piece receives flash of light.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha
At every revolution of the shaft, a flash of light is projected through the slot in the disc A An eye piece E is fitted behind the disc B on the shaft bearing and is capable of slight circumferential adjustment. We think you have liked this presentation. The pinion revolves freely on a lever.
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.
There is another epicyclci B called driven pulley mounted on another epicyc,ic to which the power from pulley A is transmitted.
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