Introduction to Measurement of Power:
In a DC (direct current) circuit: The power in DC circuit is provided by P = V * I,
In which V stand for = Voltage
I stand for = current.
The power can be calculated basically with the help of just Ammeter and voltmeter. The below diagram shows the circuit diagram for measuring power in DC (direct current) circuit.
Diagram - Voltmeter - Ammeter method
Total power (P) = Voltmeter meter reading * Ammeter reading
In 1-phase AC circuit:
Power in 1-phase AC circuit is provided by P = VICosφ,
In which,
V stands for Voltage,
I stands for current and,
Cos φ stands for power factor.
Wattmeter is employed to calculate power in AC circuits. The circuit diagram is displayed in the diagram below.
Diagram - Power measurement in 1-phase AC circuit
Total power (P) = Wattmeter reading = VI Cos φ.
From this power factor can be measured as follows
Cos φ = P/ VI
3-phase AC circuit:
1) One wattmeter method:
Diagram - Single wattmeter method of power measurement in 3-phase circuit
For balanced 3-phase load that is ZR = ZY = ZB, single wattmeter might be connected into any one phase as displayed in the above diagram. This wattmeter will point out the power in that phase only. Because the load is balanced, the entire power in the 3-phae circuit will be calculated by
Total power = 3 *Wattmeter reading
ii) Two-wattmeter method:
This is most the general method for calculating power in a 3-phase, 3-wire system because it can be employed for both unbalanced loads (ZR ≠ ZY≠ ZB) and balanced (ZR = ZY = ZB) connected in either star/delta. The current coils are connected to any two of the lines, and the voltage coils are connected to another line, the one with no current coil connection, as displayed in the below diagram.
Total power = W1+ W2
Diagram - Two wattmeter method of power measurement in 3-phase circuit
iii) Three-wattmeter method:
If the load is unbalanced and the installation is 4-wire, after that 3 wattmeter are essential. The connection of wattmeter is displayed in the below diagram. Each wattmeter calculates the power in one phase and the total power will be calculated by
Total power = W1 + W2+ W3
Diagram: Three wattmeter method of power measurement in 3-phase circuit
Latest technology based Electrical Engineering Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Measurement of Power homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Measurement of Power, project ideas and tutorials. We provide email based Measurement of Power homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Measurement of Power. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Electrical Engineering homework help and assignment help services. They use their experience, as they have solved thousands of the Electrical Engineering assignments, which may help you to solve your complex issues of Measurement of Power. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Complex Impedances tutorial all along with the key concepts of Equivalent Impedance Transform, Complex Voltage and Current, Device Specific Impedances and Combination of Impedances
tutorsglobe.com noble gases assignment help-homework help by online p block elements tutors
tutorsglobe.com the visual pathway assignment help-homework help by online receptor organs tutors
Classification of digenetic Trematodes tutorial all along with the key concepts of Blood flukes, Lung flukes, Liver fluke, Intestinal flukes and Pancreatic flukes
tutorsglobe.com pathogenesis assignment help-homework help by online salmonella tutors
www.tutorsglobe.com offers Features of Process Costing homework help, assignment help, case study, writing homework help, online tutoring assistance by accounting tutors.
Presentation of Financial Statements requires listed companies to give a statement of comprehensive income that extends the conventional income statement to involve certain other gains and losses that influence equity of shareholders.
Bacteria tutorial all along with the key concepts of Features of Bacteria, Growth and Reproduction of bacteria, Feeding and Nutrition of bacteria.
Fibre Optics tutorial all along with the key concepts of Optical Fibres, principles of light propagation, Propagation of Meridional Rays, Dispersion, types of fibers and Applications of Optical Fibres
tutorsglobe.com excretion assignment help-homework help by online human physiology tutors
Human genetics tutorial all along with the key concepts of The human karyotype, Human chromosomal abnormalities, Types of chromosomal abnormality, Human Allelic Disorders, Sex-linked Traits, Diagnosis of Human Genetic Diseases
Avail impeccable Protozoology Assignment Help and score excellent marks with 24x7 support of PhD experts at competitive prices.
the fibres are acquired from the surface of seeds. hibiscus cannabinus (deccan hemp) yields bast fibres which are employed for making ropes.
animal kingdom tutorial all along with the key concepts of characteristics of invertebrates, difference invertebrates and vertebrates, phylum protozoa, features of phylum protozoa, categorization of protozoan and amoeba phylum
theory and lecture notes of ttl nand gate all along with the key concepts of ttl nand gate circuit structure, logical operation and circuit analysis. tutorsglobe offers homework help, assignment help and tutor’s assistance on ttl nand gate.
1943759
Questions Asked
3689
Tutors
1487749
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!