Devices | Engineering Notes India

Air Compressor: Meaning, Classification, Single Stage, Work Input, Efficiency and Free Air Delivery

In this article we will discuss about:- 1. Introduction to Air Compressor 2. Classification of Air Compressor 3. Single Stage/Single Acting Reciprocating Air Compressor 4. Work Input 5. Efficiency 6. Actual Indicator Diagram 7. Free Air Delivery (FAD) 8. Multistage Air Compressor 9. Capacity Control. Contents: Introduction to Air Compressor Classification of Air Compressor Single Stage/Single Acting Reciprocating Air Compressor [...]

By Mugdha P|2018-08-01T11:32:17+05:30August 1, 2018|Air Compressor|Comments Off

Nozzle: Applications, General-Flow Analysis, Velocity, Pressure and Phenomenon | Thermodynamics

In this article we will discuss about:- 1. Definition of Nozzle 2. Some Applications of a Nozzle 3. General-Flow Analysis 4. Velocity 5. Mass-Flow Rate 6. Critical Pressure Ratio 7. Effect of Friction 8. Velocity Coefficient 9. Super Saturated or Metastable Flow 10. Phenomenon in Nozzles Operating Off the Design Pressure Ratio. Contents: Definition of Nozzle Some Applications of a [...]

By Mugdha P|2018-08-01T11:32:17+05:30August 1, 2018|Nozzle|Comments Off

Gas Turbines: Meaning, Classification, Working, Advantages & Disadvantages | Thermodynamics

In this article we will discuss about:- 1. Meaning of Gas Turbine 2. Classification of Gas Turbines 3. Working of Simple, Constant Pressure, Open-Cycle Gas Turbine 4. Work Ratio of Gas Turbine 5. Concept of Maximum Pressure Ratio and Optimum Pressure Ratio 6. Actual Gas-Turbine Cycle with Fluid Friction 7. Simple Closed-Cycle Gas Turbine and Few Other Details. Contents: Meaning [...]

By Mugdha P|2018-08-01T11:32:16+05:30August 1, 2018|Gas Turbines|Comments Off

Axial Flow Compressor: Construction, Operation, Velocity Triangle and Efficiency | Thermodynamics

In this article we will discuss about:- 1. Introduction to Axial Flow Compressor 2. Construction and Principle of Operation 3. Velocity Triangle 4. Degree of Reaction 5. Efficiency 6. Losses 7. Performance. Contents: Introduction to Axial Flow Compressor Construction and Principle of Operation of Axial Flow Compressor Velocity Triangle of Axial Flow Compressors Degree of Reaction of Axial Flow Compressor [...]

By Mugdha P|2018-08-01T11:32:15+05:30July 29, 2018|Axial Flow Compressor|Comments Off

Television and Artificial Satellite (With Block Diagram) | Electronics

Throughout the history of human civilization, man has contrived in different ways to extend his sense of sight. The microscope, the telescope and the camera were important landmarks along the way. These inventions were based upon an important characteristic of the human eye known as 'persistence of vision'. Television is one of those miracles which enables us to view a [...]

By R Chaurasiya|2018-05-16T06:23:19+05:30May 16, 2018|Artificial Satellite|Comments Off

Centrifugal Pump: Selection and Installation | Water Lifting Devices | Geography

In this article we will discuss about:- 1. Total Head in a Centrifugal Pump Installation 2. Net Positive Suction Head 3. Power Requirements of Pumping 4. Selection of Centrifugal Pumps 5. Specific Speed of Centrifugal Pumps 6. Affinity Laws 7. Installation of Centrifugal Pumps 8. Operation of Centrifugal Pumps 9. Common Troubles of Centrifugal Pumps Installation. Contents: Total Head in [...]

By R Bhagat|2018-05-15T06:18:36+05:30May 15, 2018|Centrifugal Pump|Comments Off

Fuse: Types, Merits and Demerits | Electrical Engineering

In this article we will discuss about:- 1. Meaning of Fuse 2. Metals and Alloys Used for Fuse 3. Types 4. Merits 5. Demerits. Meaning of Fuse: An electric circuit is designed to carry a definite amount of current. If a much greater current passes through the circuit, there may be serious damages. To check it, a length of a [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Fuse|Comments Off

Phase Comparators and Its Types | Devices | Electrical Engineering

Phase comparison technique is the most widely used technique for all practical directional, distance, differential and carrier relays. In a phase comparator, the operation of the relay takes place when the phase relation between two inputs S1 and S2 varies within certain specified limits. Both inputs must exist for an output to occur; ideally, operation is independent of their amplitudes, [...]

By Shanaya|2018-03-07T08:16:34+05:30March 7, 2018|Comparators|Comments Off

Negative Phase Sequence Relay and Its Types | Electrical Engineering

Whenever there is an unbalanced circuit, the unbalanced currents will have a negative phase sequence component. A negative phase sequence (or phase unbalance) relay is essentially provided for the protection of generators and motors against unbalanced loading that may arise due to phase-to-phase faults. Essentially such a relay has a filter circuit which is responsive only to the negative sequence [...]

By Shanaya|2018-03-07T08:16:34+05:30March 7, 2018|Relays|Comments Off

Distance Relays and Its Classification | Devices | Electrical Engineering

In this article we will discuss about distance relays and its classification. Introduction to Distance Relays: Distance protection is the name given to the protection, whose action depends upon the distance of the feeding point to the fault. The time of operation of such a protection is a function of the ratio of voltage and current i.e., impedance. This impedance [...]

By Shanaya|2018-03-07T08:16:34+05:30March 7, 2018|Distance Relays|Comments Off

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