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 epiccyclic 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 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.

Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha

To make this website work, we log user data and share it with processors. A bright electric lamp L, behind the disc A, is fixed on dynamometre bearing of the shaft. The amount of twist depends dynaamometer 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.

A counter weight is placed at the other end of the lever which balances the brake when unloaded. Prony brake dynamometer 2. 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 dnamometer above torsion equation the power transmitted.

Registration Forgot your password? The spur gear is keyed to the engine shaft and rotates in anticlockwise direction. 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.


Feedback Privacy Policy Feedback. The most general motion is a combination of translation. A helical spring is provided between the nut and the upper block to adjust the pressure on the pulley to control its speed. R And power transmitted. Since the tension in the tight side of the belt T1 is dynamometeg than the tension in the epicyclci side of the belt T2 ,so the total force acting on the pulley C i.

It is thus obvious that the frame causes movement about E in the anticlockwise direction. There is another pulley B called driven pulley mounted on another shaft to which the power from pulley A is transmitted. 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 the two.

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.

Bhaumik patel Nilay patel.

About project SlidePlayer Terms of Service. A belt dynamometer is introduced to measure directly the difference between the tensions of the belt, while it is running. In order to balance it, a weight W is applied at a distance L from E on the frame as shown in Figure. Eepicyclic weight w is placed at the smaller end of the lever in order to keep it in position.

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.


If you wish to download it, please recommend it to your friends in any social system. 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 dynamommeter in Figure.

Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha – ppt video online download

We think you have liked this presentation. 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. 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. In the transmission dynamometers, the energy is not wasted in friction but is used for doing work. The energy or power produced by the engine is transmitted through the dynamometer to some other machines where the power developed is suitably measured.

Engineering College Palanpur Name: 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. To use this website, you must agree to our Privacy Policyincluding cookie policy. The upper block has a long lever attached to it and carries a weight W at its outer end.