A building has an overall power factor of 0.75 lagging. The required power factor is 0.85....
A building has an overall power factor of 0.75 lagging.
The required power factor is 0.85.
The voltage provided to the building is 480 V at 60 Hz, and the building consumes 29,000 VA of power
Find the value of the capacitor (in VARs and Farads) you must connect to the load to increase the required power factor of 0.85.
Homework Answers
IN QUESTION THEY MUST MENTION IT IS 3 PHASE SUPPLY AND WHETHER CAPACITORS ARE STAR OR DELTA CONNECTED. HERE WE CONSIDER IT AS DELTA CONNECTED AND SOLVED.
IF IT IS STAR CONNECTED CAPACITOR THE IN PLACE OF V IT SHOULD BE V/ROOT3 AND REMAINING IS ALL SAME. PLEASE GO THROUGH IT.
Add Answer to:
A building has an overall power factor of 0.75 lagging.
The required power factor is 0.85....
A building has an overall power factor of 0.8 lagging. The required power factor is 0.9....
A building has an overall power factor of 0.8 lagging. The required power factor is 0.9. The voltage provided to the building is 480 V at 60 Hz, and the building consumes 30,000 VA of power Find the value of the capacitor (in VARs and Farads) you must connect to the load to increase the required power factor of 0.9.
An Inductive load 1 phase pulling power 6 kW on power factor 0.85 lagging and voltage...
An Inductive load 1 phase pulling power 6 kW on power factor 0.85 lagging and voltage 230 V. Find : a) Reactive power and Apparent power consumed by the load b) Load impedance c) Draw the triangle power of the load
Item 6 A three-phase supples 17 kVA with a power factor of 0.75 lagging to a...
Item 6 A three-phase supples 17 kVA with a power factor of 0.75 lagging to a sequence Y-connected source Part A parallel combination of a Y-connected load and a ? connected load The Y-connected load uses 12 kVA at a power factor of 0 6 lagging and has an a-phase current of 122-30 A Find the complex power per phase of the ?-connected load Enter your answer using polar notation. Express argument in degrees. VA Submit Part B Find the...
Problem #1: A 25 KW motor with lagging power factor of 0.75 in a manufacturing plant...
Problem #1: A 25 KW motor with lagging power factor of 0.75 in a manufacturing plant is running from a 240V, 60 Hz. power line. The utility company is going to impose penalty on their utility bill unless they improve their power factor to 0.9 (lagging). Determine: a) The current reactive power(Q) and the improved Q of the motor b) The size of the capacitor needed for the correction of the power factor.
2. [15 pts total] A single-phase load draws 1 MW at 0.75 power factor lagging. a....
2. [15 pts total] A single-phase load draws 1 MW at 0.75 power factor lagging. a. [10 pts] Determine the power required from an added parallel capacitor to bring the power factor of the parallel combination up to 0.95 lagging. b. [05 pts) Determine the power required from an added parallel capacitor to bring the power factor of the parallel combination up to 0.95 leading.
A three-phase positive sequence Y-connected source supplies 14 kVA with a power factor of 0.75 lagging...
A three-phase positive sequence Y-connected source supplies 14 kVA with a power factor of 0.75 lagging to a parallel combination of a Y-connected load and a A-connected load. The Y-connected load uses 9 kVA at a power factor of 0.6 lagging and has an a-phase current of 102-30° A. a) Find the complex power per phase of the A-connected load. b) Find the magnitude of the line voltage.
An induction motor draws 1.0 kW at 0.8 lagging power factor from a 250 V, 60...
An induction motor draws 1.0 kW at 0.8 lagging power factor from a 250 V, 60 Hz source. [38] (a) What value of capacitance must be placed in parallel with the motor to raise the line power factor to 93% lagging? (b) With the capacitor in service, what are the magnitudes of the motor current, capacitor current, and line current? Solution:
Q3. (30 marks in total) A) Four generator units (two 500MW and two 600MW, as at Liddel Power Stat...
Q3. (30 marks in total) A) Four generator units (two 500MW and two 600MW, as at Liddel Power Station) are connected to the same grid. All generators have 4% droop characteristics. How will they share a sudden load increase by 300MW? By how much (in Hz) will the grid frequency change as the result of this load increase? (15 marks) A big industrial load is connected to a 1.0 pu bus via a feeder. The load has 0.85 power factor...
In a synchronous generator, at 0.8 lagging power factor, an excitation voltage per phase of 240...
In a synchronous generator, at 0.8 lagging power factor, an excitation voltage per phase of 240 V gives a rated terminal voltage V. If the power factor of load increases to unity, the excitation voltage per phase required to produce a terminal voltage of V must be a. 260 V b. 250 V c. 240 V d. 225 V
A 500 kVA load has a power factor of 90% lagging and is supplied by a 480 V source
A 500 kVA load has a power factor of 90% lagging and is supplied by a 480 V source. Determine the three line currents.
Item 6 A three-phase supples 17 kVA with a power factor of 0.75 lagging to a sequence Y-connected source Part A parallel combination of a Y-connected load and a ? connected load The Y-connected load uses 12 kVA at a power factor of 0 6 lagging and has an a-phase current of 122-30 A Find the complex power per phase of the ?-connected load Enter your answer using polar notation. Express argument in degrees. VA Submit Part B Find the...
Problem #1: A 25 KW motor with lagging power factor of 0.75 in a manufacturing plant is running from a 240V, 60 Hz. power line. The utility company is going to impose penalty on their utility bill unless they improve their power factor to 0.9 (lagging). Determine: a) The current reactive power(Q) and the improved Q of the motor b) The size of the capacitor needed for the correction of the power factor.
2. [15 pts total] A single-phase load draws 1 MW at 0.75 power factor lagging. a. [10 pts] Determine the power required from an added parallel capacitor to bring the power factor of the parallel combination up to 0.95 lagging. b. [05 pts) Determine the power required from an added parallel capacitor to bring the power factor of the parallel combination up to 0.95 leading.
A three-phase positive sequence Y-connected source supplies 14 kVA with a power factor of 0.75 lagging to a parallel combination of a Y-connected load and a A-connected load. The Y-connected load uses 9 kVA at a power factor of 0.6 lagging and has an a-phase current of 102-30° A. a) Find the complex power per phase of the A-connected load. b) Find the magnitude of the line voltage.
An induction motor draws 1.0 kW at 0.8 lagging power factor from a 250 V, 60 Hz source. [38] (a) What value of capacitance must be placed in parallel with the motor to raise the line power factor to 93% lagging? (b) With the capacitor in service, what are the magnitudes of the motor current, capacitor current, and line current? Solution:
Q3. (30 marks in total) A) Four generator units (two 500MW and two 600MW, as at Liddel Power Station) are connected to the same grid. All generators have 4% droop characteristics. How will they share a sudden load increase by 300MW? By how much (in Hz) will the grid frequency change as the result of this load increase? (15 marks) A big industrial load is connected to a 1.0 pu bus via a feeder. The load has 0.85 power factor...
In a synchronous generator, at 0.8 lagging power factor, an excitation voltage per phase of 240 V gives a rated terminal voltage V. If the power factor of load increases to unity, the excitation voltage per phase required to produce a terminal voltage of V must be a. 260 V b. 250 V c. 240 V d. 225 V
Most questions answered within 3 hours.
-
Facebook Marketing benefit: How is this tool useful for
marketing purposes? Identify and explain at least...
asked 8 minutes ago -
What are the five considerations relevant to the
substantive fairness of a dismissal for permanent incapacity?...
asked 8 minutes ago -
Prince Electronics, a manufacturer of consumer electronic
goods, has five distribution centers in different regions of...
asked 10 minutes ago -
1.) For the following general reaction, rate = k[A]2 and k = 1.3
× 10−2 M−1...
asked 13 minutes ago -
In the Enron documentary(Netflix) What ethical issues did you
observe and who was responsible for them?
asked 14 minutes ago -
Many products fail, some of them spectacularly. Why do you
believe the failure rate for new...
asked 13 minutes ago -
An important news announcement is transmitted by radio waves to
people who are 65 km away,...
asked 32 minutes ago -
On June 30, 2021, Rosetta Granite purchased equipment for
$130,000. The estimated useful life of the...
asked 32 minutes ago -
. If you were the CEO of Agricole, would you pursue an
acquisition target in the...
asked 32 minutes ago -
(a) We define standard Gibbs energy change, G0 =
H0 – TS0, what is the relationship...
asked 32 minutes ago -
If the barometric pressure is 107.4 kPa, what is the pressure in
kPa of the gas...
asked 53 minutes ago -
A resonance tube can be used to measure the speed of sound in
air. A tuning...
asked 47 minutes ago