The principle of working of both SI and CI engines are almost the same except the process of the fuel combustion. In SI engines, the burning of fuel occurs by a spark generated by the spark plug. In CI engines the burning of the fuel occurs due to compression of the fuel to excessively high pressures which does not require any spark.
Dec 31, 2015· Basic principles of electrical machines. In an electrical machine, the currents in all the windings combine to produce the resultant flux. The field system produces flux. Voltages are induced in the windings such as those of an armature. When the armature carries current, the interaction between the flux and the current produces torque.
Transfer Electrical power from one electrical circuit to another Electrical circuit. It's working without changing the frequency. Work through on electric induction. When, both circuits take effect of mutual induction. Can't step up or step down the level of DC voltage or DC Current. Can step up or step down the level of AC voltage or AC Current.
Dec 11, 2017· The armature is the rotating part in a DC machine. Armature consists of conductors which carry the current. Armature is the rotating part because it is a DC machine in which DC current is involved, the change in flux is zero, so the armature must ...
7. locate the shunt and series field coils in the machine and comment on their relative number of turns and cross sectional areas. Generator types Characteristics generators may be classified as (i) separately excited generator, (ii) shunt generator, and (iii) series generator and (iv) compound generator.
The main advantage of induction motors is that there is no need for dc field current to run the machine. An induction machine can be used as a motor or a generator. An induction machine can be used as a motor or a generator.
Nov 24, 2017· A synchronous machine is a most important type of electric machine. The generating machines found in all generating stations are synchronous machines and are commonly known as synchronous generator or alternators. Synchronous motors are well known for their constant speed operation and are widely used in industries.
6. (a) Derive the emf equation of a DC machine. (b) Sketch the external characteristics of shunt, series compound generator. 7. A 4 pole dc shunt generator with wave wound armature has 40 slots each having 12 conductors armature reaction is 1 Q and shunt field resistance is (3) (13)
The DC generators could be controlled back to an unmoving speed as batteries tend to be stimulating to recover considerably more fuel. Classification of DC Generators Generators are classified according to the way their magnetic field is developed in the stator of the machine.
Jan 13, 2010· Machine Tool Engineering Jntu Model Paper{} ... Explain with neat sketches the constructional features of a twist drill and label the important features [10] (b) What is the function of a drill Jig?What provisions it must include? ... 8. (a) Explain clearly with a neat sketch the construction and working of a pull broach. ...
Digital drawing is when a drawing is created using graphics software. Instead of using a pencil and paper, digital artists draw with a tablet or a computer, along with a device such as a mouse or a stylus. Digital drawing programs offer features such as layers, brush sets, color palettes, rulers and guides, and pressuresensitive strokes.
Construction modeling workflows are hard. Your 3D construction software shouldn't be. SketchUp can take you from floor plan to finished project. It gets the (whole) job done.
Illustrate the following types of motors (i) DC Series Motor (ii) DC Shunt Motor (iii) DC Compound Motor. And also write the voltage equation and also applications of each. (13) BTL 2 Understanding 9. (i) Demonstrate the principle of operation of DC Motor.
11. a) Explain with neat sketch universal radial drilling machine. 7 b) Explain with neat sketch the geometry of twist drill. 7 OR 12. a) Explain with neat sketch the constructional features of horizontal boring machine. 7 b) Differentiate between push and pull type of br oaching operation with neat sketch. 7 *****
machine with reference to the tool/job holding and difficulty of operational technique. (b) With the help of a sketch explain the construction and working of (i) Pillar drilling machine (ii) Fine boring machine 5. Explain with a neat sketch the terms helix angle and direction of cut in the case of milling.