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Open Wind Tunnel Apparatus

Technical Description

A wind tunnel is the classic experiment system for aerodynamic flow experiments. The model being studied remains at rest while the flow medium is set in motion, and thus the desired flow around the model is generated. Open wind tunnel used to demonstrate and measure the aerodynamic properties of various models. For this purpose, air is drawn in from the environment and accelerated. The air flows around a model, such as an aerofoil, in a measuring section. The air is then decelerated in a diffuser and pumped back into the open by a fan. The carefully designed nozzle contour and a flow straightener ensure a uniform velocity distribution with little turbulence in the closed measuring section. The flow cross section of the measuring section is square. The built-in axial fan with guide vane and a variable-speed drive is characterised by an energy-efficient operation at high efficiency. Air velocities of up to 28m/s can be reached in this open wind tunnel. The trainer is equipped with an electronic two-component force sensor.Lift and drag are detected and displayed digitally. The air velocity in the measuring section is displayed on the inclined tube manometer. The tube manometers is recommended for measuring the pressure curves in drag bodies. Extensive accessories allow a variety of experiments, for example lift measurements, pressure distributions, boundary layer analysis or visualisation of streamlines. The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives & Experiments

– Determine drag and lift coefficients for different models – Pressure distribution when flowing around drag bodies – Boundary layer analysis – Investigation of flutter – Wake measurement

Features

* Open wind tunnel for a variety of aerodynamic experiments * Homogeneous flow through the flow straightener and special nozzle contour * Transparent measuring section

Post Office Box, Plug Type

Description

Plug type, with three pairs of ratio coils of 10,100 and 1000 ohms and 16 series coils from 1 to 5000 ohms, total 11,110 ohms, giving a range from 0.01 ohm to 1,111,000 ohms. Two tapping keys are provided for battery and galvanometer. Accuracy ratio coils ±0.05%, others ±0.1%

Shunt Active Filter Trainer

Specification

• FPGA Spartan 3A DSP board used for generating the PWM signals. • Three phase 3 level diode clamped inverter used as a Active filter. • SRF (or) Instantaneous PQ theory will be used to generating reference current. • PI control or fuzzy logic will be used to regulate the dc link capacitor voltage. • Reference DC link Voltage will be 250V. • Hall effect current transducers used to sense the source currents, load currents and compensation currents. • Hall effect voltage transducers used to sense the dc link voltage and source voltages. • Necessary source inductor and filter inductor provided. • Input source Line voltage -200V (Peak). • Input source Current -10A (Peak). • Power Rating -3KW. • Reactive power compensation can be provided. • 3KW linear and non-linear loads will be given. • User can modify source, filter inductance and external loads. • User can modify control algorithm. • Industrial type cabinet provided. • Before compensation source current THD will be greater than 26% • After compensation source current THD - 2.5 - 4% in 3 level inverter - 4 - 5% in 2 level inverter

Digital Colony Counter

Description

Fitted with automatic 3 Digits LED Digital Display. Counting plate with illuminated standard wolf hugel ruling ensures clearly differentiated and sharply defined colonies. Each touch of making pencil in the petri dish increment the colony count by '1' and the glowing LED Display depicts the total colony count. Provided with a manual reset of digital display, ON/OFF Switch, counting plate, 100 mm. dia lens, cord and plug. To work on 220V A.C.
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Cylinderical Magnet

Description

Cylindrical shape, Chrome Steel, half Red / Blue 10 mm dia in Pairs Cylinderical Magnet Size are mentions below which we have :- 50 mm 75 mm 100 mm

Wave Machine, Metal

Description :- Demonstrating longitudinal and transverse waves. A number of eccentric discs move a number of metal rods. Transverse waves are obtained by straight rods and longitudinal waves by bent rods.

Lenses, Set of Six

Description

Glass, one each double convex, Plano – convex, concavo – convex, convexo – concave, Plano – concave and double concave lens, in box. Sizes in 38mm and 50mm.
Lenses, Set of Six (50mm).

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Transformer and Stand For Sodium Lamp

Description

The transformer is housed in a two-part sheet steel case with ventilation and has a lamp house support rod mounted directly on to the transformer case to provide a convenient, self-contained assembly with 1.5m wire.

Analytical Funnel

Our exclusive Analytical Funnel is designed specifically for analytical chemistry; the body of the Analytical Funnel is 60". Moulded in polypropylene, these Analytical Funnel is provided with internal & external ribs to prevent air blockage. We offer our Analytical Funnel at market leading prices. Material : Polypropylene
ParticularsPack (Pcs) 
Analytical Funnel 35 mm72 
Analytical Funnel 50 mm72 
Analytical Funnel 62 mm36 
Analytical Funnel 75 mm36 
Analytical Funnel 100 mm36 

Test Tube PEG Rack

We bring forth supreme Test Tube PEG Rack for our clients. Our range of Test Tube PEG Rack has been highly appreciated for its quality. These can conveniently hold inverted tubes for drying purpose and minimizes collections of airborne contaminants inside the tube. This rack can also be used to hold and dry electrophoresis and chromatography plates. Material : Polypropylene
ParticularsPack (Pcs) 
Test Tube Peg Rack-96 Places for 13mm Tubes6 
Test Tube Peg Rack-50 Places for 16mm Tubes6 

STAINING RACKS

PRODUCT DESCRIPTION: We have marked a distinct and dynamic position in the market by providing a high quality array of Wooden Test Tube Staining Rack.(12hole)
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Automobile Parts Actual Cut Section

This model helps the student to understand the working of automobile parts very easily. It is specially made dissectible for demonstration purposes. 1 Self Starter 2 Battery 3 Distributor 4 Ignition Coil 5 Spark Plug 6 Magneto 7 Electrical Fuel Pump 8 Mechanical Fuel Pump 9 Master Cylinder 10 Brake Cylinder 11 Gear Lubricating Pump 12 Water Pump or Water Body 13 Radiator 14 Crank Shaft 15 Cam Shaft 16 Connecting Rod 17 Piston With Rings 18 I.C. Injector 19 Speedometer 20 Shock Absorber

Human Eye, 3 Times Enlarged

Description

7-part model. The upper half of the sclera with cornea and eye muscle attachments, both halves of choroid with iris and retina, lens and vitreous humourare removable, mounted on stand with key card.

Heart With Artery Blockage Models

We are well known manufacturer and supplier of the human anatomy models. We offer a wide range of models of heart with artery blockage. This model is used to show and learn the artery blockage in the heart. We give the model of heart with the blockage of the artery for easy understandings.

Conductivity Appratus Ingen – Hauzs

Description

Consists of 5 metal rods of different materials having equal lenghts mounted in sheet metal box 150 x 90 x 100mm with corks. Metal rods 150 x 3 mm length x diameter, one each of aluminium,brass, copper, lead and iron, embedded along one side of a metal tank size 150 x 90 x 100 mm length x width x height.
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Reptilia

Description

All Charts are made on PVC rexine , hand drawn, waterproof, in fast multi colors with a black background. Each chart is provided with rollers to hang on wall,Size 75×100 cm. Types of Reptiles Snakes Poisonous & Non-poisonous Types Varanus Skull different views Varanus Skeleton Varanus Circulatory System Varanus Excretory System Lizard various systems (Each system on a separate chart) Uromastix various systems (Each system on a separate chart)

Crucibles Porcelain Gooch

Description

Glazed inside and outside except base. Perforated bottom. Available with or without lid.

Capacity

1. 10ml 2. 15ml 3. 25ml 4. 50ml 5. 100ml

Cube, Glass, Hollow

Description

50 mm side, cemented, with hole and stopper at top

Three Phase Cyclo Converter

This module is designed for three phase half wave-step down cycloconverter. It consists of 18 Synchronized firing pulses, 18 SCRs, Relevant power supply and circuitry for frequency divisions.

Specification

• Eightin nos. SCR with RC snubber protection is provided for 3phase • cycloconverter power circuit (each phase consist of 6 SCRs) Rated at 1200V@25Amps. • Three nos. center tapped inductor (0%.50%, 100%) is provided for power circuit. • Eightin nos. Isolated gate pulses for SCR power circuit. • One potentiometer is provided to vary the frequency. • One potentiometer is provided to vary the output voltage. • MCB protection. • Housed in sleek screen printer cabinet. • Provision for V/F control Power Supply. • Input 440V ± 10%, 50HZ three phase AC supply. • ± 15V DC, 9V, 9V, 9V AC (3phase) for the firing circuits. • 24-0-24V 3phase input for power circuit.
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SILICA CRUCIBLE WITHOUT LID

PRODUCT DESCRIPTION
  • Crucible is glazed inside and outside.
  • Highly resistant to alkalis and hot temperatures
  • 50ml capacity
  • Outside diameter 55mm, 42mm height
  • No lid includedSilica crucible is glazed inside and outside. Highly resistant to alkalis and hot temperature SIZES ARE: 15ML 25ML 50ML 80ML 100ML 150ML

SILICA CRUCIBLE TALL FORM Without Lid, Translucent

PRODUCT DESCRIPTION -Without lid, translucent, glazed - Ordinary type lids to be purchased separately Size/ dimension:
  • 20ml,  Dia. 35mm x Ht. 38mm
  • 30ml, Dia. 43mm x Ht. 38mm
  • 50ml, Dia. 51mm x Ht. 51mm

SILICA MUFFLE TRAYS (For VM Crucible)

PRODUCT DESCRIPTION:   Available in 2types:  Two Hole, 39mm Length Four Hole, 76mm Length
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