Electro dynamometer type wattmeter
These are basically moving coil instruments. In these instruments, the operating field is produced by the fixed coil instead of a permanent magnet. The instruments in which the operating field is produced by the fixed coils are
Comparison between moving-iron (M.I) instruments and moving-coil( M.C)instruments
M.I Instruments M.C Instruments It can be used for a.c as well as d.c voltage and current measurement. It is suitable only for the d.c voltage and current measurement. Less sensitive as compared to MC instruments. It
Qualities of measuring instrument
Following are the qualities of measuring instruments : Accuracy It is the closeness with which an instrument reading approaches the true value of the quantity under measurement or it is defined as the ability of a device
Compare between indoor substation and outdoor substation
Indoor substation Outdoor substation Less because all the components are insulated.therefore clearance required between them is less. More as some components such as bus bar, O.H. line are not insulated hence clearance between them is more. More
H type cables
These type of cable was invented by H. Hochstadter and hence the name is given the name is given. It consists of three cores and each core is insulated by impregnated paper of desired thickness. The insulation
Electrical equipment of thermal power plant
Electrical equipment used in thermal power plant : Alternators Transformers Switchgear Exciter Alternators Each alternators is coupled to a steam turbine & converts mechanical energy of the turbine into electrical energy. The electrical output from the alternator
What is generation of electrical energy?
Generation of electrical energy : The conversion of energy available in different forms in different form in nature into electrical energy is known as generation of electrical energy. Energy is available in various form different natural sources
Write different parts of boiler
The main parts of boiler are as follows: Combustion chamber : Combustion of fuel takes place in the combustion chamber consequently heat is generated and traned to the water in the tubes. Heat transfer takes place by
What is a boiler
Boiler Boiler is the heart of the process plant and steam system. A boiler is an enclosed vessel that provides a means for combustion and transfers heat to water until it becomes hot water or steam. The
Turbo alternator
Turbo alternator The alternator which coupled directly to the steam turbines are called turbo-alternator . The turbine converts heat energy in the steam into mechanical work and the alternator converts mechanical energy into electrical energy . The