Description
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Motorised Gyroscope Apparatus
The apparatus consists of a rotor mounted in bearings. This rotor is free to rotate about
(i) Its own axis i.e. axis of spin.
(ii) Axis of precession.
(iii) Axis of gyroscopic couple.
The rotor is connected to the variable speed motor. The weight of the motor is balanced by another weight, which is on either side of the rotor. By putting weights on the weight platform torque can be supplied to rotor, which is also called gyroscopic couple.
SPECIFICATIONS OF MOTORISED GYROSCOPE APPARATUS:
1.Rotor dia. 250mm free about 3 axis of rotation driven by variable speed motor.
2.Dimmerstat to control the motor speed.
3.Stopwatch to measure the angular speed about the axis of precession.
4.Weights – 0.2 kg, 0.5 kg and 1 kg.
5.A technical manual accompanies the unit.
SERVICES REQUIRE FOR MOTORISED GYROSCOPE APPARATUS:
1.220v stabilized AC supply with earthing connection.
2.Bench area – 0.5 x 0.5m at working height.
3.Tachometer for speed measurement (can be supplied at extra cost).
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Epicyclic Gear Train Holding Torque Apparatus
It is a motorized unit consisting of SUN gear mounted on input shaft. Two plane gears mesh with the annular gear. These planet gears are mounted on a common arm to which output shaft is fitted. Loading arrangement is provided for loading the system and to measure Holding Torque.
Specifications:
1. External type Epicyclic Gear Train: a. Bearing blocks for input & output shafts. b. A gear train with Holding drum and handle. 2. Internal Type Epicyclic Gear Train: a. A compact Gear Train. b. Variable speed D.C. Motor c. Rope brake arrangement to measure output torque and holding torque. 3 Control Panel comprising of a. Digital Ammeter and Voltmeter. b. RPM Indicator. c. Speed Controller.Experimentation –
1. To measure epicyclical gear ratio between Input shaft and Output shaft. 2. To measure epicyclical gear ratio between Input shaft and holding drum. 3. To measure Input torque, Holding torque and Output torque.Service Required –
1. Floor Space – about 1.5m x 2m. 2. 230 V.AC stabilized power supply.
Whirling Of Shaft Apparatus
The unit consists of a main spindle driven by a variable speed motor. Three different governor assemblies can be mounted over the spindle. A with pointer measures the lift of the governor. Students can calculate characteristics of governor at and compare their performance viz. Sensitiveness, stability, governor effort etc.
SPECIFICATIONS OF WHIRLING OF SHAFT APPARATUS:
1.Governor assemblies – Hartnell, porter & propel governor assembly one each with rotating weights. 2.Variable speed FHP D.C. motor to drive the main spindle. 3.Sliding weights for porter & proell governor. 4.Scale & a pointer to measure governor lift. 5.Spring & Spring compression adjustment arrangement. 6.A technical manual accompanies the unit.SERVICES REQUIRE FOR WHIRLING OF SHAFT APPARATUS:
1.230V, 5A, AC supply connection. 2.Bench area of 0. 75 x 1m. at working height.
Coriollis Component Of Acceleration
This set up is designed to study coriollis component of Acceleration of a slider crank Mechanism. The apparatus uses hydraulic analogy to represent the rotating slider. It consists of a rotating block with two arms in opposite direction. These tubes can be rotated at various speeds by using a swinging field motor, which also acts as a dynamometer to measure torque applied to rotating tubes. A Perspex window on top cover helps to visualize the process. Rotameter is used to measure water flow rate through tubes. Water is circulated by small monoblaock pump.
Specifications:
1.Main Tank with fiberglass lining. 2.Rotating Arms 9/6 mm dia, 300 mm long. 3.Motor – Swinging field, D.C., 0.5 HP. 4.Rotameter 5.Monoblock Pump 6.Control Panel comprising of – (i) Speed Control Unit. (ii) Speed Indicator. (iii) Necessary switches. 7.Rigid support frame.Range of Experiment:
Coriollis Component of Acceleration can be determined at various speeds of rotation and water flow rates.Service Required:
1.A.C. Single Phase .230 V. stabilized supply. 2.Floor Space -1.5 m X 1.5 m.
Motorised Governor Apparatus
The unit consists of a base upon which the bearing holders and driving motor are bearing can be fitted in a holders to end conditions for test shafts, viz. Both end fixed and one end free, one end fixed. A Variac provided control of driving motor. The unit demonstrates the phenomenon of whirling of shafts with single rotor. As the test is destructive, after the test cannot be used, hence the unit only demonstrates the principle.
However, results obtained are closer to theory, as compared to those with bare shafts. Also, It can be demonstrated that, after passing whirling speed, shaft again starts running true.
SPECIFICATIONS OF MOTORISED GOVERNOR APPARATUS:
1.Test shaft – 4.75 mm, 6.35 mm and 7.9 mm – 2 each. 2.Bearing to provided end conditions, (a) Both ends fixed, (b) One end fixed and one end free. 3.Drive motor 1/8 HP, 1500 rpm with control arrangement. 4.The whole unit is mounted on a sturdy base. 5.Rotor for each shaft of suitable size. 6.A technical manual accompanies the unit.SERVICES REQUIRE FOR MOTORISED GOVERNOR APPARATUS:
Floor space area of 2m. X 1m. at working height. 230V, 15 A, AC electric supply connection.
Journal Bearing Apparatus
DESCRIPTION:
The apparatus consists of a plain steel shaft encased in a bearing and directly driven by a small electric motor. The bearing is freely supported on the shaft and sealed at motor end. The motor speed is precisely controlled by control unit and sealed at motor end. The motor speed is precisely controlled by control unit and can be run in both directions. The bearing contains twelve equi-spaced pressures tapping around circumference and four along the axis. All are connected by light flexible plastic tube to the manometer so that the pressure head of all sixteen point can be observed at a time. The bearing can be loaded by attaching weight to the arm supported beneath it.SPECIFICATIONS:
1. Journal : 50 mm. dia. (nominal) 2. Bearing : 55 mm. dia. 3. Weights : 4 adjustable weights 4. Motor : D.C. shunt Motor, 3,000 RPM. 5. Control panel : For speed control of Motor 6. Manometer panel : 16 tube Manometer 7. Oil recommended : SAE 10EXPERIMENTS:
1. Observation of the pressure profile at various conditions of load and speed. 2. Plotting the Cartesian and polar pressure curves. 3. Plotting the theoretical Summerfield curves.SERVICE REQUIRED:
1. Electric Connections : A.C Single Phase, 230v. supply with ear thing. 2. Stand Alone Space : 1.5m X 1.5m X 4m Height.
Vibration Lab Complete 11 Experiment
The VIBLAB is designed to help in conducting various experiments to illustrate and verify the principles and relations involved in the study of vibrations.
This apparatus enables a comprehensive range of Vibration Experiments to be conducted on single basic framework. The frame is robustly constructed from channel section. The experiments are specially designed for quick and easy assembly on to the framework using a minimum amount of common engineering tools. To reduce changeover time on tube more advanced free and forced vibration experiments, large knurled knobs are used to clamp components on the frame and many components are common to several experiments.
All of the referenced groups of experiments are available separately making it possible to procure them individually & if required to build up a complete set over a period of time.
Specifications:
1.Wide range of experiments. 2.Forced and Free Vibrations. 3.Damped and undamped vibrations. 4.Arrangements for variation of damping. 5.Sturdy storage cabinet. 6.Experiments easily assembled. 7.Covers experiments for undergraduate studies. 8.Scope for student projects.Features:
[I] Pendulum Experiments: 1.Simple Pendulum. 2.Compound Pendulum. 3.Bi-filler Suspension. [II] Longitudinal Vibration Expiariment. 1.Spring Mass System. 2.Eciuivalent Spring Mass study of undarrped 3.System free vibration [III] Torsional Vibration Experiment. 1.Single Rotor Systern. 2.Two Rotor System. 3.Single Rotor with viscous darnping. [IV] Damped Vibration Experiment. 1.Verification of Dukerleys Rule. 2.Forced rotor with viscous damping along with frictional HP Motor Strip chart recorder & control unit. 3.A technical manual accompanies the equipment.Services required:
1.230 V, A.C. stabilized supply along with earthing connection. 2.Bench area 0.5m x 0.5m x 0.5m height. 3.Tachometer to measure the jumping speed, (can be supplied extra)
Cam Analysis Apparatus
The apparatus is designed to study the cam profiles and performance of cam and follower system. The apparatus consists of a shaft supported by ball bearings upon which three different types of cams can be mounted.
The push rod for follower is supported vertically, which can adopt three different types of followers. Cams and followers can be changed easily. A variable speed motor rotates the cam. A dial gauge permits plotting of follower displacement with respect to cam position. By operating the system at different Speeds, jump speed can be found and also the effect of weight and spring force on jump speed can be studied. Jump can be visualized also with the help of stroboscope (it is not supplied With the product).
SPECIFICATIONS OF CAM ANALYSIS APPARATUS:
1.Cam -Eccentric, tangent and circular ARC type – one each. 2.Follower- mushroom, flat faced and roller type – one each. 3.Cams and followers are hardened to reduce wear of the surfaces. 4.Variable speed motor coupled to camshaft of suitable range and Variac. 5.A dial gauge to note the follower displacement. 6.A technical manual accompanies the equipment.SERVICES REQUIRE FOR CAM ANALYSIS APPARATUS:
1.230 V, A.C. stabilized supply along with earthing connection. 2.Bench area 0.5m x 0.5m x 0.5m height. 3.Tachometer to measure the jumping speed, (can be supplied extra)
Lathe Tool Dynamometers
This is a strain gauge type two component lathe tool dynamometer designed to measure vertical and horizontal forces on the while orthogonal cutting process. The unit is in two parts one is mechanical sensing unit or tool holder, which can mounted on the top of the Ross slide after removing swivel base and compound slide of a lathe and digital force indicator. With this Dynamometer student can study the change in these forces by varying Speed, Cut and Feed.
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