What is the value of q we need to inject

Assignment Help Electrical Engineering
Reference no: EM13219374

A backup generator is connected to a three-phase 240-V line and it is driven by a 20-hp diesel engine. The generator has 90% efficiency (which means it can convert 90% of input mechanical power to output electrical power). The output power is 0.7 power-factor lagging.

(1) Find the values of P and Q inject to the line.

(2) If we want to correct the power factor to 0.9 lagging, what is the value of Q we need to inject.

 

Reference no: EM13219374

Questions Cloud

What is the system nyquist sample rate : What is the system's Nyquist sample rate if ω0 = 1000/(2π) rad/sec.?
What is the sample period ts : What is the sample period Ts?
How much charge passes through a cross section : the ends of a length of wire are labeleda and b. If the current in the wire is iab = -3A, are electrons moving toward a or b? How much charge passes through a cross section of the wire in 3 seconds?
Explain why pricing policy may not be good news for consumer : Suppose the two rival office supply companies Office Depot and Staples both adopt price matching policies. If consumers can find lower advertised prices on any items they sell, then Office Depot and Staples guarantee.
What is the value of q we need to inject : If we want to correct the power factor to 0.9 lagging, what is the value of Q we need to inject.
Find current of phase b in polar form : In a balanced three-phase system the Y-connected impedances are 3∠60°Ω. If V_bc=480∠-75° V, find current of phase "b" in polar form.
Compute the total cost for each plan : Develop an aggregate plan using each of the following guidelines and compute the total cost for each plan. Which plan has the lowest total cost?
What is the average velocity of an electron : If the concentration of free electrons is 10^29 electrons per cubic meter and if they are uniformly dispersed throught the wire, then what is the average velocity of an electron ?
Would the us gasoline maket be effiecient : Concerned about the polictical fallout from rising gas prices, suppose that the u.s. government imposes a price ceiling of $3.00 a galon on gasoline. Q:: Explain how the market for gasoline would react to this price ceiling.

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Solve problems for the basic concepts of induction motor

Problems for the basic concepts of Induction motor(IM) taking care of slip and syncronous speed and motor speed and its relationship, A 50 Hz induction motor operates in such a way that the slip is 1.45.

  Define in comparing the behaviour of an n-channel mosfet

In comparing the behaviour of an n-channel MOSFET with a p-channel device having identical geometry and threshold voltage, it is found that the n-channel FET has a greater drain current than that of the p-channel FET.

  Explain telephone channels and pcm analysis

Telephone channels and PCM analysis, The analog to digital converter (ADC) used in a telephone system outputs 8 bit words. The digital words are transmitted as a serial stream to form a PCM voice signal

  A unit for a telecommunications system is to be designed

A unit for a telecommunications system is to be designed so as to have a minimum availability of 0.9994. The MTTR (mean time to repair) for the unit is estimated to be 24 hours.

  Find the resistance and inductance of the circuit

an inductive circuit takes a current of 10.5 amperes when connected to a 500 volts 50c/s supply. this current rises to 12.5 amperes when frequency is reduced to 40 c/s. the voltage being maintained constant. find the resistance and inductance of t..

  What precentage of sound energy is reflected

If the accoustic impedance of water is 1.49 and for steel is 42.1, what precentage of sound energy is reflected at a water-to-steel interface? 12.5%,86.8%,43.9% or 43.59%.

  Explain next generation transmission system

You are required to determine that this next generation transmission system will require a spectral efficiency of 5 bits/sec per Hertz.

  Find all values of alpha such that the system is stable

Find all values of alpha such that the system is stable for K = 2. If the unity feedback closes around this G(s) and an input is a unit step r(t) = 1u(t), what is the stead-state error, e_ss, as a function of alpha and K?

  Define what is the maximum symbol rate

What is the maximum symbol rate for this link and the number of bits per symbol? What format would you recommend for the transmitted current pulses on this baseband link?

  What type of cable is necessary for each connection

What type of cable is necessary for each connection: straight or crossover? You can assume that S1 and S2 do not have the ability to resolve crossovers (called Auto-MDIX).

  Consider a three-phase distribution feeder

Consider a three-phase distribution feeder with line reactance of10 ohm supplying a three-phase Y-connected load of 200 kVA at power factor of 0.85 lagging.

  What is the average electron drift velocity

A silicon semiconductor resistor is in the shape of a rectangular bar with a cross sectional area of 1x10^-6 cm^2 a length of 0.1 cm and is doped with a donor concentration of 5x10^16 cm^-3.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd