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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The upper block has a long lever attached to it and carries a weight W at its outer end. Share buttons are a little bit lower. The most general motion is a combination of translation. The pulleys A and B are connected by means of a continuous belt passing round trzin two loose pulleys C and D which are mounted on a T-shaped frame.
In the transmission dynamometers, the energy is not wasted in friction but is used for doing work. The frame is pivoted at E and its movement is controlled by two stops S,S. Prony brake dynamometer 2. Engineering College Palanpur Name: 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.
Epicyclic-train Dynamometer-torque and power transmitted ()
The pinion or the intermediate gear meshes with both the spur and annular gears. Belt transmission dynamometer 3. In order to prevent the slipping of the rope over the flywheel, wooden blocks are placed at intervals around the epichclic of the flywheel. A counter weight is placed at the other end of the lever which balances the brake when unloaded. Auth with social network: In the absorption dynamometers, the entire dynamomster 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.
Rotational Dynamics In pure translational motion, all points on an object travel on parallel paths. My presentations Profile Feedback Log out. Bhaumik patel Nilay patel.
Two stops S, S are provided to limit the motion of the lever. A bright electric lamp L, behind the disc A, is fixed on the bearing of the shaft. 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.
To make this website work, we log user data and share it with processors. 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. 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.
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.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha
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. The pinion revolves freely on a lever. Absorption dynamometers, and 2. The energy or power produced by the engine is transmitted through the dynamometer to some other machines where the power developed is suitably measured.
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.
Nirmal Kushwaha”— Presentation transcript: R And power transmitted.
The annular gear is also xynamometer to the driving shaft and rotates in clockwise direction. About project SlidePlayer Terms of Service. 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. We think you have liked this presentation. V-belt drive V-belt is mostly used in factories and workshops where a great dynamometter of power is to be transmitted from one pulley to another when the two.
It is thus obvious that the frame causes movement about E in the anticlockwise direction. Published by Shanna Daniel Modified over 2 years ago. Due to this, the light does not reach to the eye piece as shown in Figure c.
A helical spring is provided between the nut and the upper block to adjust the pressure on the pulley to control its speed.
If you wish to download it, please recommend it to your friends in any social system. 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.