NITDTET/ITA/02/2025-26

Welding Table, 3ft X5ft, Made by 38mmX6mm Mild Steel Angle Structure And 12mm MS Plate Top

Worm and Worm Wheel, An all metallic self contained apparatus useful for demonstrating the efficiency of worm and wheel and also the principle of works. It Consist of machine cut worm gear of 25 cm diameter, carrying a metal drum on 12 cm diameter, and machine cut worm on steel spindle carrying a 12 cm diameter pulley. The whole arrangement is fixed on heavy cast iron bracket capable to be a wall. Complete with effort pulley, string and hooks with Suitable weight.

Wheel & axle simple without weight, The wheel is of 30 cm dia .axles are in steps of 15 & 7.5. cm reducing diameter giving a ratio 1: 2: 4. A steel axle passes through the center of the wheel supported on ball bearings in iron brackets. The base is provided with holes to fix the apparatus on wall. Complete with snatch pulley block, cord and hooks.

Simple screw jack without weight, Screw diameter 30 mm & lifting height 500 mm. All metallic construction accuracy machined, nut and screw with a pitch of 5 mm carrying a double flanged turned table of 20 cm dia.Fitted onsteel base and complete with two adjustable pulleys, chords and hooks.

Winch crab single purchase without weight, Single Purchase Crab Winch fitted with heavy Cast Iron wall brackets and attachable to portable M.S. framed trolley. The effort wheel is of C.I. material of 25 cm diameter with a hole for effort attachment mounted on a shaft of about 40 mm dia. On the same shaft a geared wheel (machine cut) of 15 cm dia shall be mounted. The teeth of this pinion wheel shall mesh with another spur toothed wheel of 30 cm diameter, This spur wheel shall be counted on another axle to which a load drum of about 7.5 cm diameter of heavy loads can be attached at bottom. Apparatus showing details of all parts for demonstration and standard lab experiment purpose.

Analytical Balance, Single pan, pan size 130 mm, Readability 0.001g, cap120g, (A & D make) FZ 120i/equivalent internal calibration

Arsenic set (For Laboratory), Semiquantitative, 0.005-0.5 ppm range, with test strips & Re agents (Merck/Hach/equivalent)

Redwood Viscometer, Heavily silver plated brush oil cup, ballvalve, spirit cover with Thermometer clip, capacity 50 ml (Biomed instrumentation/any reputed brand)

Daniel - Cell for EMF measurement, Complete set for Daniel Cell

Spherometer :, least count 0.05 mm, made by Mitu – Toya (Japan).

Convex and concave mirror surface, radius of curvature 20 cm, Diameter 80 mm

Standard quality Hooke's law apparatus, Complete set: Retort stand (a vertical metal rod ( length 75 cm, diameter 2 cm) attached at the centre of the base with horizontal metallic standard extension at the top ) with clamp having heavy metallic circular base (diameter 18 cm , 4cm thick).

Springs, Two different springs with hanging facility from the above extension, and with attached pointer and hook hanging facility at the lower end.

Hanger, Hanger with load to be hung from the lower end of the hook

Standard weight, 20 gm, 6 nos.

flywheel with shaft, Complete set: Standard quality flywheel with shaft. Weight hanger, slotted weights

Stoke’s law apparatus for viscosity, Neutral glass thick tube about 1.25 inch diameter and 1 meter long fitted on a wooden stand with a meter scale. The glass tube is having a nozzle at the bottom fitted with a rubber tube and pinch cock.

Glass Container, 500 c.c.,borosil made

Magnifying glass, 6cm diameter with steel frame

Travelling microscope , Cast-iron heavy base with three leveling screws. Stainless steel made body. Calibrated movement in Horizontal and Vertical direction. 180mm horizontal scale and 140mm vertical scale both graduated in 1/2mm division with every cm numbered. Vernier constant 0.01mm. Rack & pinion fine focusing knob and can be set vertically or horizontally and fitted with 75mm FL Achromatic Objective and 10x eyepiece with cross hair.

co-efficient of linear expansion of the material of a rod., Complete set: Pullinger's apparatus, optical level, high resolving power telescope with scale and thermometer

HYDROSTATIC BALANCE, Capacity 250g and sensitivity 1 mg, body made of teak wood, made of brass with others accessories (for the determination of specific gravity expt.).

STD. WEIGHT BOX, Chrome Plated Brass weights in box, containing from 1 mg to 100 g (grade “A”), ISI Standard .

BEAKER, 150 ml capacity, borosil.

SPECIFIC GRAVITY BOTTLE, 50 ml capacity.

Wooden Bridge, (teak wood made).

Metre Scale, Wooden

G Clamp, Metallic

Slotted Weight, 50 gm

Slotted weight holder with hook, Metallic

Stop Watch, 1sec. division, 60 sec

RECTANGULAR GALSS SLAB, Crown glass, size : 4 inch x 3.5 inch x 1 inch ( for the verification of laws of refraction Expt.) Transparent all sides

DRAWING BOARD, made of Soft wood ( 18 inch x 18 inch), good quality.

STOUT HAIR PIN, 2.5 – 3 inch height

BOARD PIN, Standard

WOODEN METER SCALE (1m)., Standard

Kirchoff's Law Trainer Kit with Meter, Standard

Power supply, 9 V@ 500 mA

Variable resistors, 0 to 10 K

Multimeter, Standard

Photo cell (Selenium), Mounted in the metal box with connections brought out at terminals

Lamp holder with bulb, 60W bulb,

Moving coil analog microammeter, Range 500µA (mounted on the front panel and connections brought out at terminals)

Moving coil analog millivoltmeters, Range 1000mV, (mounted on the front panel and connections brought out at terminals)

Wooden bench fitted with scale, Good quality wood

AM Modulator and Demodulator Kit, Message Signal: Sine wave Frequency 100 Hz to 2.8 KHz Amplitude 0 to 3V Carrier Signal Sine wave Frequency 28 KHz to 108 KHz Amplitude 2V

FM Modulator and Demodulator Kit MAKE: CALTEK, Message Signal : Sine wave Frequency 100 Hz to 2.8 KHz Amplitude 0 to 3V Carrier Signal : Sine wave Frequency 100 KHz Amplitude 5V Modulation : XR 2206 Based Demodulation : PLL Detector & LPF

30MHz, CRO Dual trace 50MHz, DSO Dual trace, 3 GHz,Spectrum Analyzer, Frequency Range 9 kHz – 3 GHz Frequency Resolution 10 HZ Span 0 Hz (zero Span), 100 Hz – 3 / 4.5 GHz DANL -136 dBm (-161 dBm with optional preamplifier) Display 25,7 cm (10.1″) TFT-Color-LCD Touchdisplay (1024 × 600 Pixel) Interfaces USB-Host, USB, LAN, GPIB Dimensions 410 mm × 224 mm × 135 mm

DC – 30MHz Bandwidth 1mV/div Sensitivity on Both Channels CH1, CH2 (Independent Channels), CH1 & CH2 (Alternate / CHOP), CH2 INVT, ADD and SUBTRACT X-Y Operation 40ns/div to 0.2s/div Time Base 140mm Rectangular CRT with Internal Graticule Triggering to 40MHz Z Modulation (TTL Level) 8 x 10 cm. Display TV Triggering Frame (V) & Line (H) MAINS Trigger Variable Hold Off Built-in Component Tester / Comparator

PCM Modulator and Demodulator Kit, Message Signal 1 : Frequency 500 Hz Amplitude 0 to 2.5V Message Signal 2 : Frequency 1 KHz Amplitude 0 to 2.5V Mic Pre Amplifier : Transistor Based Sampling Rate : Frequency 128KHz Modulator Type : ADC based (AD 7819) Demodulator : DAC based (DAC 0800) Filter : 4th order LPF Supply Voltage (Board) : +12V, +5V / DC Supply current : 100 mA (Minimum)

PAM Modulator and Demodulator Kit, Message Signal 1 : Frequency 500 Hz Amplitude 0 to 5V Message Signal 2 : Frequency 1 KHz Amplitude 0 to 5V Message Signal 3 : Frequency 2 KHz Amplitude 0 to 5V Carrier Signal : Frequency 8KHz, 16KHz, 32KHz, 64KHz Amplitude 2V

PWM Modulator and Demodulator Kit, Message Signal 1 : Frequency 500 Hz Amplitude 0 to 5V Message Signal 2 : Frequency 1 KHz Amplitude 0 to 5V Message Signal 3 : Frequency 2 KHz Amplitude 0 to 5V Carrier Signal : Frequency 8KHz, 16KHz, 32KHz, 64KHz Amplitude 2V Modulator Type : LM 311 Based (Comparator) Demodulator : 4th Order LPF

PPM Modulator and Demodulator Kit, Message Signal 1 : Frequency 500 Hz Amplitude 0 to 5V Message Signal 2 : Frequency 1 KHz Amplitude 0 to 5V Message Signal 3 : Frequency 2 KHz Amplitude 0 to 5V Carrier Signal : Frequency 20 KHz Amplitude 5V Modulator Type :IC 555 Based Timer)

ASK Modulator and Demodulator Kit, Message Signal 1 : 8 Bit variable Data Amplitude 5V Message Signal 2 : Debounce Data Amplitude Low (0) & High (5V) Message Signal 3 : Fixed Data 25K, 12.5K, 6.25K, 3.12K Amplitude 5V Carrier Signal : Sine wave Frequency 200 KHz Amplitude 5V

PSK Modulator and Demodulator Kit, Message Signal 1 : 8 Bit variable Data Amplitude 5V Message Signal 2 : Debounce Data Amplitude Low (0) & High (5V) Message Signal 3 : Fixed Data 25K,12.5k,6.25K, 3.12K Amplitude 5V Carrier Signal : Sine wave Frequency 200 KHz Amplitude 5V

FSK Modulator and Demodulator Kit, Message Signal 1 : 8 Bit variable Data Amplitude 5V Message Signal 2 : Debounce Data Amplitude Low (0) & High (5V) Message Signal 3 : Fixed Data 1K, 2K, 4K Amplitude 5V Carrier Signal : Sine wave Mark 70 KHz / Space 30 KHz Amplitude 5V

To measure L & Q by Maxwell method WITH LED BAR GRAPH & OSCILLATOR., Mains supply DC Power supply Sine wave generator Fixed Frequency : 230 V ±10%, 50 Hz : +12V, -12V : 1KHz ±5% Amplitude Control Range : Upto 20Vpp Unknown Inductors DPM : 10 mH, 20mH, 30 mH, 56µH, 24µH, 12µH : 200mV Unknown Internal Resistance:470W, 10 , 20 , 30

To measure the unknown capacitance by Schering bridge WITH LED NULL BAR GRAPH & OSCILLATOR, Input Voltage : 15V dC Output Frequency :1kHz Output Voltage :2V AC Output Current :0.5 Amps Measuring Range : 0.001uF – 2.0uF

CRO demonstration kit : Study working and applications of (i) C.R.O. (ii) Digital Storage C.R.O. & (iii) C.R.O. Probes, CRT : 6"Rectangular screen with internal graphical 8x10 division (1div-1cm) Vertical Deflection Display : CH1, CH2, ADD, ALT & CHOP Deflection Factor : 5mV/div to 5V/div +3%, 1mV/div to 1V/div, +5% (x5), 10 steps Rise Time : <17.2ns Maximum Input Voltage : 250 (DC + AC peak value) when <1KHz (250V, DC +AC)

MOSFET characteristics trainer kit, Two variable DC supplies 0 to 15 V & 0 to 24 V @ 500 mA. On panel circuit diagram with MOSFET Two dual range digital panel meters. Required numbers of patch cords and operating manual.

To study a Jones chopper, D.C. Source : 24V DC (Unregulated). Trigger Circuit : 1. UJT Trigger Circuit with variable trigger frequency to trigger the Main SCR. 2. UJT Trigger Circuit with variable trigger frequency to trigger the Auxiliary SCR. Commutation : Class ‘D’ Type. Output Voltage : 5V to 20V approximately (variable). Output Frequency : 30V to 100Hz approximately. Duty Cycle : 20 to 70% at 50Hz approximately. Controls : 1] Mains ON / OFF. 2] Frequency Control. 3] ON Time Control.

GSM, GPRS trainer kit for Laboratory., Voltage: 220V Frequency: 50-60Hz Phase: Single

To measure the unknown frequency by Wein Bridge. WITH LED NULL BAR GRAPH & OSCILLATOR, I.C regulated power supply : +12 V and -12 V @250 mA. Set of Resistances. Set of Capacitors. 2 nos. Variable Resistance. Op.Amp : LM741. Connecting Wire.

To construct and test a Q-meter WAVE SPECTRUM ANALYSIS USING Q METER CONCEPT & STUDY KIT WITH DSO CUM SPECTRUM ANALYZER FREE SW. OR IN DSO-FFT.(this kit consist of Mixed signal generator, Digital meter & specially designed Q Meter system to find out all mixed frequency. Decade Inductance box, Complete kit, resonance indication on meter, CRO & PC INTERFACE (Free Virtual PC based DSO+SPECTRUM ANALYZER SW TO OBSERVE FREQUENCY FFT) THIS IS OUR PROPRIETARY ITEM. , Sine Frequency Digital Mixer Section Out Of Seven Fixed Frequency. Matching Module/network For Short Ckt. Of Q Meter Network. 'Q’ Meter Circuit With Decade ‘L' & ‘C’ Box For Heavy Current. Full Function Digital Multi-meter With FRQ. ‘L' & ‘C’ Measurement. Computer Output & Software For Spectrum Observation & Balance.

Demonstration of Photocopier, Copy Speed Simplex to Simplex Up to 20 ppm in A4 (21 ppm in Letter) FCOT (B&W) From Ready Less than 14 seconds (from platen) Copy Resolution Text : Scan: 300 x 300 dpi , Printing : 600 x 600 dpi @ ADF Scan: 600 x 300 dpi , Printing : 600 x 600 dpi @ Platen Text/Photo Original Type Factory Default Text/Photo Max. Original Platen A4 ,Size ADF Legal (8.5" x 14"), Multi Copy 1~9

To study the different blocks of a telephone receiver., Diagram on board describing different sections in telephone like Line protector, Voltage dropper, Ringer, Dialer, Keymatrix Sound amplifier section etc. Test points to measure the signals in different sections. Can be used as normal telephone instrument. User&#39;smanual with fault finding

Implement Half Adder, Full Adder, Half Subtractor and Full subtractor by using different digital ICs. ,Built-in power supply DC +5 V @ 500 mA 3 Logic input switches with green LED display 3 Logic output red LED display Two and gates ( 7408 ), one OR gate ( 7432 ) Two not gates ( 7404 ) & Two EX-OR gates ( 7486 ) on panel Required numbers of patch cords and operating manual.

Realization of parallel and serial full-adder using ICs (IC- 74LS83) , 4-bit/8-bit Binary Addition & Subtraction Easy switching between addition and subtraction modes LEDs fo6/isual indication of input-output & carry out logics TECHNICAL SPECIFICATION DC Power Supply : 5 V DC Logic levels 5 V : High (logic 1) 0V : Low (logic 0) LED indication : LED will be ON for logic high or '1' state and Will be OFF for Logic low or '0' state Weight : 1 KG (Approx) Dimensions (mm) : W340 X H125 X D210

Test the performance of speaker Functional blocks with self-explanatory waveforms and technical details indicated on board. Facility to learn the characteristics of the loud speaker, Loud speaker Trainer, Temperature Range: -5 to 45 Celsius Type: Educational Training Kit Material: Metal Display Type: Analog Voltage: 220-240 Volt (v) Colour: White and black.

Study the internal layout of black and white TV receiver All the fault switches are provided to conduct fault and observe the output. And the test points are provided to know the voltages at the different section of the TV and to observe the signal output of the different sections. The output is observed on 20” picture tube., Black and white television trainer. Lines: 625 Picture: 38.90 MHz Sound: 33.40 MHz Video band width: 6 MHz Inter carrier sound if: 5.5 MHz Channels: 100 Aspect ratio: 4:3

a)Study the internal layout of colour television, b)Fault finding in given Colour TV :i) No colour ii) Red b)Colour only iii) Blue colour only iv) Green colour only v)Magenta colour only vi)Cyan colour only vii)Yellow only viii)No raster, No Sound. c) Measure voltage level to sketch composite video signal at different stages of TV receiver., Colour television trainer. Superior quality 21-inch HD LCD Colour, Television/ PC Monitor , Manual and Remote control operation PAL/ NTSC video formats ,Composite video input/ VGA input ,Complete block diagram of a LCD TV system on-board Display: LCD, HD Screen Size: 21 Inch (53cm) Display Resolution : 1280 (H) X 1024 (V) pixels resolution Contrast Ratio: Dynamic Contrast Ratio (1000:1)

Test various section of LED TV receiver, LED TV TRAINER KIT WITH 50MHz DSO PATTERN GENERATOR

Demonstration of Washing Machine, Motorized washing and dryer assembly. High functionality. Washing machine trainer Semi-Automatic, single phase, 50Hz frequency, 230V AC power supply, Pressure Gauge:-30 to 150PSIG (P2, low), Tank capacity: 20Liters

Demonstration of Refrigerator., Trainer is designed with simple and functional concepts to visualize the main parts of compression refrigeration cycle. The total set-up is housed in well-designed rigid structure. Stabilized power supply 15 Amp 220 V AC Water Supply & Drain.

Single Phase Bridge Inverter Trainer Kit, On board firing circuit : Ramp Comparator method Interconnections : 2 mm sockets SCR : SCR 2P4M 400V/2A Mains Supply : 220V/110V, 50Hz / 60Hz

Control System Lab Trainer Kit, emperature Sensor 10 mV / Deg C Features: Open loop Control system Close loop Control system Feedback concept Servo motor control DC motor control Speed control Light intensity control Temperature Control V/F & F/V conversion LED bar display Bread board for circuit design User can design & develop own circuits On board DC supply PC interface for open loop & Close loop control PC based Frequency counter PC based DC voltmeter Real time graphical representation User friendly software Exhaustive course material & references PC based Analog Inputs 4 Inputs with 0 to 5 V / 0 to 10 V PC based DC Voltmeter 0 to 10 V range PC based Frequency counter 0 to 6 MHz (square wave) PC based Analog Output 1 Output with 0 to 5 V / 0 to 10 V

Installation of DTH trainer, Main DTH kit mounted in an all open fashion in Master Unit for easy viewing through transparent acrylic cocer. Facility to connect LCD / LED / CRT TV. Interface: RF Signal Input - x1, Video Output - RCA x1, Audio Output - Stereo RCA x1, Baud Rate - 115 Kbps Tuner: RDA5815M, Receiving Frequency - 950 - 2150 MHz

To study SMPS with PWM regulator chip, 24V small rated SMPS is required for lab purpose

Online UPS Demonstration Kit, Output Voltage : 230 V AC Nominal, Input Voltage : +12V DC Battery. Capacity : 500VA, Output Frequency : 50 Hz Accuracy : + 5%. Switching : Automatic. Backup time : 12 Minutes.

400W Small Wind Turbine (SWT) system to generate electricity. , 400W Small Wind Turbine (SWT)

A.C.Motor Drives (variable voltage variable frequency), 1 or 3 Phase Input, 3 Phase 0-400HZ Output, 4kW 5HP 220V 17A for Motor Speed Control.

AC distributor simulator , ELECTRICAL POWER SYSTEM SIMULATOR TRAINER ELECTRICAL POWER SIMULATOR TRANSMISSION, DISTRIBUTION AND CONTROL

Experimental set up for load test and O.C. & S.C. test of three phase alternator. , three phase alternator

Experimental set up for load test of 3 phase 2 HP Induction Motor., 3 phase 2 HP Induction Motor

Experimental set up for Load Test of single phase 1 kVA transformers, single phase 1 kVA

Experimental set up to measure and control the temperature of furnace/ machine using thermocouple. , a setup that includes the thermocouple, a temperature controller, and a heating/cooling mechanism (like a furnace).

Experimental setup for Dielectric Strength test set for transformer oil., a testing apparatus, a clean oil sample, and specific procedures to ensure accurate results Components of the Experimental Setup: Testing Apparatus,Oil Sample,Measuring Device

Experimental setup for Speed control of 1 HP Induction Motor (Frequency Changing with required Panel & VVVF drive and other accesso.ries) , 1 HP Induction Motor, a Variable Voltage Variable Frequency (VVVF) drive, along with a control panel and other accessories.Typically includes a rectifier (to convert AC to DC), a DC link (for smoothing and energy storage), and an inverter (to convert DC back to AC at the desired frequency)

Heat run test of a single phase transformer, single phase 1 KVA Transformer, a crucial test for single-phase transformers to ensure they can operate safely at their rated load without overheating.

Parallel operation of two single phase 1 kVA transformers., Parallel operation of two single-phase 1 kVA transformers set up

Experimental setup for Measurement of temperature using Thermocouple,RTD, Thermister., placing each sensor in the same thermal environment, alongside a reference thermometer, and then measuring the corresponding output (voltage for thermocouple, resistance for RTD and thermistor) as the temperature changes.

The direct load test on 1 HP single phase induction motor to determine the efficiency and speed regulation for different loads., 1 HP single phase induction motor, gradually increasing the mechanical load on the motor (e.g., using a brake and pulley arrangement) while simultaneously measuring electrical parameters like voltage, current, and power, as well as mechanical parameters like speed.

Simulator for differential protection scheme for transformer with power system simulation. kit , typically involves a hardware or software platform that replicates the behavior of a transformer and its associated protection relay

Set up to control the speed of a three phase induction motor by using constant V/f method and facility to plot the graph between speed and frequency, need a variable frequency drive (VFD) and a way to measure motor speed, such as a tachometer. The VFD will adjust both voltage and frequency while maintaining a constant V/f ratio.

Set up to control the speed of a three phase induction motor by varying frequency and facility to plot the graph between speed and frequency, This setup allows for adjusting the motor's speed by changing the frequency of the power supply to the stator windings. The VFD also enables the creation of a graph plotting the motor's speed against the applied frequency

Schering bridge to measure unknown capacitance, accurately measure the capacitance of an unknown capacitor, as well as its dissipation factor and dielectric loss

Testing of static distance protection relay using Relay Testing Kit., simulating fault conditions and verifying the relay’s response, including its tripping time and accuracy

Testing of Directional Over Current Relay (DOCR) [ Industrial grade]by Relay Testing Kit., Testing a Directional Overcurrent Relay (DOCR) with a relay testing kit involves simulating fault conditions and verifying the relay's ability to operate correctly based on the direction of fault current

Display board containing sample of different types of Overhead Conductors, Underground Cables., A display board showcasing different types of overhead conductors and underground cables could feature samples of common conductor materials, cross-sections of cable designs, and labels explaining their applications. The board would visually demonstrate the physical differences between materials like copper, aluminium, and steel-reinforced aluminium (ACSR) for overhead lines, as well as the layered construction of underground cables.

PODDAR SYSTEM AND SERVICES (BID ID -7538526)

ADVANCE INSTRUMENTS (BID ID -7647980)

A.S.INDUSTRIAL CORPORATION (BID ID -7666709)

Maa Durga Traders (BID ID -7651354)

DELTA TECHNOLOGIES (BID ID -7647194)

ADVANCE INSTRUMENTS

Maa Durga Traders

SUSHAMA ELECTRONICS

A.S.INDUSTRIAL CORPORATION