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 bright electric lamp L, behind the disc A, is fixed on the bearing of the shaft. To make this website work, we log user data and share it with processors. A weight w is placed at the smaller end of the lever in order to keep it in position. Auth with social network: In order to balance it, a weight W is applied at a distance L from E on the frame as shown in Figure. The spur gear is keyed to the engine shaft and rotates in anticlockwise direction.
Belt transmission dynamometer 3. My presentations Profile Feedback Log out. V-belt drive V-belt is mostly used in factories and workshops where a great amount of power is to be transmitted from one pulley to another when dynammoeter two.
Bhaumik patel Nilay patel. Engineering College Palanpur Name: Nirmal Kushwaha”— Presentation transcript: 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 loose pulleys C and D which are mounted on a T-shaped frame. The pinion or xynamometer intermediate gear meshes with both the spur and annular gears.
Registration Forgot your password? Two stops S, S are provided to limit the motion of the lever. Rotational Dynamics In pure translational motion, all points on an object travel on parallel paths. The energy or power produced by the engine is transmitted through the dynamometer to some other machines where the power dynwmometer is suitably measured.
Prony brake dynamometer 2. A belt dynamometer is introduced to measure directly the difference between the tensions of the e;icyclic, while it is running. 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. 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.
The frame is pivoted at E and its movement is controlled by two stops S,S. 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. It is thus obvious that the frame causes movement about E in the anticlockwise direction.
Due to this, dynaometer light does not reach to the eye piece as shown in Figure dynakometer. Published epicycpic Shanna Daniel Modified over 2 years ago. 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 pinion revolves freely on a lever. 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.
The amount of twist depends upon many factors such as dynxmometer 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. Share buttons are a little bit lower.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha
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. A counter weight is placed at the other end of the lever which balances the brake when unloaded.
The most general motion is a combination of translation. Absorption dynamometers, and 2.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha – ppt video online download
In order to prevent the slipping of the rope over the flywheel, wooden blocks are placed at intervals around the circumference of the flywheel. Since the tension in the tight side of the dynamometeer T1 is greater than the tension in the slack side of the belt T2 ,so the total force acting on the pulley C i. If you wish to download dhnamometer, please recommend it to your friends in any social system.
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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. 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 traain 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 dynamoemter will be opposite to the slot in disc B as shown in Figure d and hence the eye piece receives flash of light.
The annular gear is also keyed to the driving shaft and rotates in clockwise direction.