This presentation I made with the hope that it will be useful for the students who are in schools and colleges and for them who are preparing for competitive exams.

1. SCIENTIFIC INSTRUMENTS AND
THEIR USES FOR RAILWAYS
EXAMS
Ganesh Behera
Raghu Instittute of Technology
2016-2020

2. 1. Instrument used for measuring altitude – Altimeter
2. Instrument used for measuring electric current – Ammeter
3. Instrument used for measuring wind speed – Audiometer
4. Instrument used for measuring atmospheric pressure – Barometer
5. Instrument used to measure growth in plants – Crescograph
6. Instrument used to measure longitudes in sea – Chronometer
7. Instrument used to examine internal parts of the body – Endoscope
8. Instrument used to measure the depth of ocean – Fathometer
9. Instrument used to measure the sound under water – Hydrophone
10. Instrument used to measure the emission of radiant energy – Radiometer
11. Instrument used to measure the relative density of liquid – Hydrometer
12. Instrument used to measure the level of humidity – Hygrometer
13. Instrument used to measure the heat radiation – Bolometer

3. 14. Instrument used to trace the movement of heart – Electro cardiogram (E.C.G)
15. Instrument used to record the electrical activity of the brain –
Electroencephalography.
16. Instrument used for measuring the pressure of gases – Manometer
17. Instrument used for measuring the movements of magnets & fields – Magnetometer
18. Instrument used for measuring the electrical resistance in ohms – Ohmmeter.
19. Instrument used for measuring the distance travelled by a wheeled vehicle –
Odometer.
20. Instrument used for viewing objects above sea level – Periscope.
21. Instrument used for detecting the direction ranges of an approaching aeroplane by
means of radio wave – Radar.

4. 22. Instrument used for measuring high temperature – Pyrometer
23. Instrument used for measuring low temperature – Cryometer
24. Instrument used for measuring rainfall – Rain Gauge
25. Instrument used for measuring blood pressure – Sphygmomanometer
26. Instrument used for measuring the instensity of earthquake – Seismometer
27. Instrument used for determining salinity of solution – Salinometer.
28. Instrument used for measuring electrical potential difference between two points –
Voltmeter.
29. Dynamo – Used to change mechanical energy to electrical energy.
30. Battery – Used to change chemical energy to electrical energy.
31. Electrical motor - Used to change electrical energy to mechanical energy
32. Electric bulb – Electrical energy into light & heat energy.

5. MAY GOD BLESS YOU
ALL THE BEST
SHARE THIS KNOWLEDGE WITH EVERYONE.