Dew Point Meter

1:15 AM
Basic Principle of Dew Point Meter By Cooling at constant pressure if the temperature of air is reduced, the water-vapour in the air will s...

Hair Hydrometer

11:16 PM
Basic Principle Due to humidity , several materials experience a change in physical, chemical and electrical properties. This property is us...

Sling Psychrometer

12:40 AM
Sling Psychrometer is used to measure both the dry bulb and wet bulb temperatures at time. These temperatures are a measure of humidity cont...

McLeod Vacuum Gauge

5:47 AM
Basic Principle of McLeod Vacuum Gauge: A known volume gas is compressed to a smaller volume whose final value provides an indication of th...

Bonded Strain Gauges

3:11 AM
These gauges are directly bonded (that is pasted) on the surface of the structure under study. Hence they are termed as bonded strain gauges...

Unbonded Strain Gauges

5:08 AM
These strain gauges are not directly bonded (that is, pasted) onto the surface of the structure under study. Hence they are termed as unboun...

Effects of Feedback

12:29 AM
The effects of feedback in systems on other working parameters of the system has been analysed. The parameter considered for analysis are ga...

Feedback Principle

11:32 PM
As I said in the previous post Open loop control system dont give the required level of control as they depend on human judgement. Exampl...

Types of control systems

11:32 PM
There are two types of control systems namely: Open loop control systems (non-feedback control systems) Closed loop control systems (fe...

Measurement of Strain

1:43 AM
Strain gauges are devices used to measure the dimensional changes of components under test. Strain gauges are used in a number of applicatio...

Automatic Control Systems

11:32 PM
With the development of technology, man has learnt to use very reliable and accurate systems that require least manpower. Automatic control ...

Laws of thermoelectricity

2:08 AM
Actual applications of the thermocouple to measure require the consideration of following laws of thermo electricity. First law of homogen...

Elastic diaphragm gauges

4:37 AM
Basic principle of Elastic diaphragm gauges: when an elastic transducer (diaphragm is this case) is subjected to a pressure, it deflects...

Dead Weight Tester

4:15 AM
Description The dead weight tester apparatus consists of a chamber which is filled with oil free impurities and a piston – cylinder combina...

Terms related to pressure

4:52 AM
Atmospheric pressure: The pressure due to air surrounding the earths surface is called as atmosperic pressure. Absoulte pressure: It is k...

Bimetallic Thermometer

4:36 AM
Basic Principle: These thermometers use the following two principles: 1. All metals change in dimension, that is expand or contract when...
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