The Power output to a three- phase load is found to be 15kW using two watt meter method . i) Determine the Power input if the efficiency is 85% ii) Determine the Power Factor iii ) Determine the reading of each watt -meter if the power factor of the system is 0.95

The Power output to a three- phase load is found to be 15kW using two watt meter method . i) Determine the Power input if the efficiency is 85% ii) Determine the Power Factor iii ) Determine the reading of each watt -meter if the power factor of the system is 0.95

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.28P: For the system shown in Figure 3.34. draw an impedance diagram in per unit by choosing 100 kVA to be...

See similar textbooks

Related questions

Q: If the current and voltage are 90 degrees out of phase, the power factor will be? a) 0 b) Infinity…

Q: 9) In a 208 V 3-phase motor load, the current drawn by the motor is 22 A and the PF is 0.6. a) What…

A: Given- For three phase motor load- Voltage, V= 208 Volts Current, A= 22 A Power factor = 0.6 To…

Q: 208/130° V and Ven 208/10° V. Obtain Determine the phase sequence of a balanced threephase circuit…

Q: How to calculate to continues power of 500KVA generator at 60hz, 440v, pf

A: In this question we will find continuous power...

Q: Explain 6 methods of improving power factor in electrical system

A: There are mainly 6 methods for improving power factor in electrical system which are as below,…

Q: The voltage-flux adjustment of a certain single phase 220 V induction watthour meter is altered so…

A: Given: Supply voltage, V = 220 V The meter is altered so that phase angle between flux and applied…

Q: Two heating units x and y are connected across a 100 V supply unit y takes twice as much power as…

A: Given data: Vin=100 V Pin=2280 W P2=2P1

Q: In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter is zero.…

A: Given: Two wattmeter method has, First Wattmeter reading, W1=W Second wattmeter reading, W2=0

Q: What is low power factor wattmeter and what is its use?

A: The instrument which measures the very low factor is known as the low power factor wattmeter (LPFW).…

Q: In two-wattmeter method, the readings of the wattmeter will be identica load in one of the two…

A: Option - b ( Answer )

Q: The meter constant of single phase energy meter is expressed in terms of a. Volts/kWh b. kW/kWh c.…

A: Given that single phase energy meter constant

Q: The actual impedance of a load is 30 OHM. The per-unit impedance of the load is 0.5 pu when Base…

A: In this answer let us try to find the base power used in order to get the given per unit impedance…

Q: + R 15 V =4V

A: The solution is given below

Q: 13. A rotary standard with a K, of % whr per revolution and a multiplier of 3 makes 42.4 revolutions…

A: Revolution testing:

Q: 1. Find the average power drawn by each charge. Total average power drawn by the load Find. 2. Find…

A: Node: The meeting point of more than two branches in a circuit is referred as a node. KCL: According…

Q: In three phase power each voltage current and power is delivered by how many degrees..

A: Phase Phase is the difference between the starting position of the two sinusoidal waveform, so it…

Q: ANSWER THE FOLLOWING PROBLEM: MAKE SURE TO SHOW YOUR COMPLETE SOLUTION AND ANSWER MUST BE IN FOUR…

A: Here given three loads a) lamp load 10 kW a unity power factor (b) motor load of 80 kVA at 0.8 power…

Q: (6.) THEVENINS THEOREM IN THE GIVEN CKT., CALGULATE THE CURRENT AND THE POWER DRAWN BY RL=5012 ALS0…

A: First we will find out the thevenin equivalent resistance and thevenin equivalent voltage.

Q: [2] A D.C. to D.C. chopper operates from a 48 V battery source into a resistive load of 240hm. The…

A: Vs = 48 VR = 24 ohmf = 250 HztON = 1 ms = 1x 10-3 sec

Q: In two wattmeter method of 3-phase power measurement, the readings of reading of any one of the…

A: The power factor in two wattmeter method is given by the formula :

Q: A power supply A delivers 10 V dc with a ripple of 0.5 V r.m.s. while the power supply B delivers 25…

Q: What is the total apparent, reactive and real power of the network in figure 1? Also, determine the…

A: Given circuit: To find: What is the total apparent, reactive, and real power of the network? Also,…

Q: If in one cycle (360 degrees), all of instantaneous power falls under positive loops (no negative…

A: In this question , we will write about instantaneous power and wattmeter reading...

Q: 5-A Load of particular kVA is drawing a current which lags behind the voltage at an angle of 75.43…

Concept explainers

Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Analysis of Single Phase and Three Phase System

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

please write your Introduction about this topic , and answer please in print font do not write in hand writing ? beceuse I want to copy it ?
For the system shown in Figure 3.34. draw an impedance diagram in per unit by choosing 100 kVA to be the base kVA and 2400 V as the base voltage for the generators.
9) In a 208 V 3-phase motor load, the current drawn by the motor is 22 A and the PF is 0.6. a) What is the apparent power of the circuit? b) What is the working power of the circuit? c) What would the current be if the PF is increased to 0.85 for the same motor load?
How to calculate to continues power of 500KVA generator at 60hz, 440v, pf 0.8?
Q1. If in one cycle (360 degrees), all of instantaneous power falls under positive loops (no negative loops), the load must be: a.) a resistor b.) an inductor or capacitor Explain: Q2. A wattmeter will indicate zero when the current lags (or leads) the voltage by 90 degrees. Explain
ANSWER THE FOLLOWING PROBLEM: MAKE SURE TO SHOW YOUR COMPLETE SOLUTION AND ANSWER MUST BE IN FOUR DECIMAL PLACES. 1. The load taken from a supply consists of (a) lamp load 10 kW a unity power factor (b) motor load of 80 kVA at 0.8 power factor (lag) and (c) motor load of 40 kVA at 0.7 power factor leading. Calculate the total load taken from the supply in kW and in kVA and the power factor of the combined load.
5-A Load of particular kVA is drawing a current which lags behind the voltage at an angle of 75.43 degrees. The operating power factor is __________ . a. 0.5958 b. 0.2515 c. 0.6122 d. 0.6511
13. A rotary standard with a K of % whr per revolution and a multiplier of 3 makes 42.4 revolutions during the testing of a watthour meter with a K,, of 1.8 whr per revolution. If the meter has two current coils connected in series and makes 48 revolutions, what is the percent registration of the meter under test? A. 79.5% B. 98.1% C. 119 % D. 102%
What is low power factor wattmeter and what is its use?
Two heating units x and y are connected across a 100 V supply unit y takes twice as much power as unit x. Total power supplied by the source is 2280 watts. Determine the total power drawn by the heating units if they are connected in series across the same source. Explain the difference between energy and power.
An inductor of 0.3 H and resistance 60 ohms is connected between each line and the neutral of 50 Hz three phase. The voltage between pairs ia 415v. Calculate the currwnt in each line The total power in the system
Pls answer no. 3