Which are the best current gen PC games?
Call of duty modern warfare 2Call of duty black ops 1 and 2Call of duty ghosts.Battlefield 4Call of duty series coming nowadays are shit. If you havent played these above games play these right now. Modern warfare 3 is my all time favourite.If you need a little adventure along with first person shootingFar cry 3 and 4and for silent missionTom clancy’s splinter cell blacklist.Tomb raider 2013( square enix release )Watch dogs ( highly recommended )Prototype ( by activision )Some other games areBatman arkham city, arkham origins, arkham knightCrysis 2,3If you like assasins creed start playing from start AC 1, AC 2, AC brotherhood, AC revleations ( amazing story line ). I didnt like the later versions AC 3 ,AC 4 BLACK FLAG, UNITY AND SYNDICATEGames i mentioned here are released between 2011-2014
Will the weather change in Need for Speed Rivals for PS3?
There is no weather change for current gen.
At what minimum rotation speed should a shaft drive a generator to produce electric power?
In a synchronous generator, the shaft always turns at the synchronous speed, which is determined by the AC frequency and the number of magnetic poles of the stator. For example, if it’s connected to a 60 Hz power grid, a 4-pole synchronous generator will turn at 1800 rpm. If you push harder on the shaft, it won’t turn faster; it’ll just generate more power. It’s a little unintuitive, until you realize that when you “push harder” you’re actually pushing, indirectly, on every other generator connected to the grid. You’d have to push really hard to make all those machines turn faster.If your generator isn’t connected to the grid, you’ll need to either have a way of regulating the speed (e.g. by controlling the throttle on an engine-generator) or a means of dealing with the variable-frequency output (see Robert Harvey's answer).In an asynchronous (induction) machine, the shaft turns at synchronous speed when the machine is at idle, not generating or consuming power. At higher speeds, the machine generates electrical power. If you push harder, it’ll generate more power and also turn faster. At less than the synchronous speed, the machine acts as a motor, which is usually bad. (Usually there are protective relays to shut down the plant in this situation.)So whether it’s a synchronous or asynchronous machine, the minimum speed to generate power is the synchronous speed.
Why the field current in a synchronous generator increase when the load is increased?
In a DC motor and synchronous generator, when the armature rotates its coils cut the magnetic and induce a voltage in the coils. This voltage is of opposite polarity of the voltage that is powering the motor (the battery) and is called the back emf. It is modeled as a voltage source that is proportional to the speed of the motor times a constant. The faster the motor is rotating the higher the back emf.The power of the motor is not constant and neither is the energy. The power into a motor is just the voltage measured at the lead wires times the current in the lead wires (P=V*I). The output power of the motor is just the speed of the motor times the torque. The power will be zero when there is zero torque and it will be zero when there is zero speed. In between those two points, the power will increase, peak, and then return to zero. In general, on a DC motor, speed is proportional to voltage and torque is proportional to current. As your load increases and you need more torque, the motor will draw more current. If you need to speed your motor up or slow it down, you need to raise or lower your voltage.
What size generator do i need to run an irrigation system?
I'm setting up an irrigation system, drawing water up from 50m below ground level straight into a distribution pipe and hose reel irrigator. We are getting a Rovatti 6 inch submersible pump, but we are struggling to understand what size generator we need to power this pump. The Rovatti pump has a three phase Franklin motor, rated at 15 Hp, 11 kW, 50 Hz, 2-pole (rated 23.3. Amps). It's wired direct-on-line. The technical data for the motor says that the starting current needs to be 5.5 times the nominal current. We have contacted 4 generator companies and we have a range of solutions from 60kVA to 110kVA. I can't quite believe that we need such a big generator, but I have no technical expertise in this area. Can anyone with experience in this kind of thing suggest what size generator would work for us? Thanks a lot.
What are the minimum and maximum rpm required in a generator to produce electricity?
This depends on the type of prime mover. A steam turbine driven generator will have 2 pole, 3000 rpm ( for 50 Hz), a diesel engine will have 4 pole, 1500 rpm and a hydraulic turbine will have 8 pole 750 rpm. For large hydraulic turbines, speed can be even less.
What RPM do I need on a 5kva generator to produce a steady current to power a house?
In North America, AC current has a frequency of 60 hertz. Elsewhere it is 50 hertz.The speed of a generator determines the frequency. There are two main parts to the generator. The engine, which provides the power to an alternator which converts the engine’s power into electrical current.If the alternator has a single North and South Pole, then RPM for 60 hertz is 3600 and the RPM for 50 hertz is 3000. A two pole alternator would operate at half the speed.Portables usually have single pole alternators and therefor run at either 3600 or 3000 RPM, depending on the required frequency.This article gives information on how to use a generator to power a house.
Why do interplanetary space ships have a speed limit? Why does the speed of ejected propellant matter? What stops our space ships from accelerating infinitely?
The only speed limit is the speed of light.The speed of ejected propellant is very important. A spacecraft is propelled by taking advantage of Newton's Third Law:For every action there is an equal and opposite reaction.Momentum is conserved for a system without external influence. So, if we take a piece of the spaceship and expel it in a particular direction, the rest of the spaceship must have an equal and opposite reaction in order to conserve momentum.So, to accelerate the spacecraft we need to produce a force. We do that by expelling pieces of fuel out of the back of the spacecraft. You can see that the more mass we expel in a given period of time, the more acceleration is produced and/or the faster that mass is moving when we expel it, the more acceleration is produced.We want to minimize the mass of propellant we have to carry, so the goal in advancing propulsion technology is to find ways to make the exhaust velocity greater. Ion engines, for example, expel small amounts of gas, but that gas has been electrically accelerated to great speeds.
At what RPM does a generator have to be rotated to get power?
A generator is rotated by any kind of external force such as wind, water or steam. The speed of the generator depends on the thrust provided by those external forces on the axis of the turbine blades. The electromagnetic torque acting over the blades helps to rotate the torque by certain speed. The speed of the alternator always kept in constant so that the frequency of the supply voltage also kept in constant value . The speed of the alternator increases by burning more fuel and increasing the amount of hot steam .To do that more fuel should be injected to the boiler. Generally the speed of the alternator is kept constant the poles of the alternator can not be changed.The speed of alternator is called synchronous speed which can be determined by a very simple formula given below…Ns = (120*f)/P.Where f be frequency of the generated power from that alternator.P be the number of poles of the alternatorNs be synchronous speed.So, if we want to generate 50HZ frequency power from the 4-pole generator output then we have to rotate the alternator with the speed of Ns = (120*50)/4 = 1500 rpm or (1500/60) rps.Same way if you want to generate 60HZ from the output of 4 poles alternator then we have to rotate the alternator shaft by 1800 rpm or (1800/60) rps.To generate more power the speed of the alternator can be increased…Hope this will help you.THANKS FOR READING !!!
What is the difference between hyper transport and FSB?
Front Side Bus The FSB started out as the parallel bus that connected all components on the motherboard. Since then, point to point serial connections replace the FSB in other connections (SATA, PCI-Express, DMI) and left the CPU as the only connection using the FSB connecting to the FSB. While it is an old and aging technology, it is cheap and easy to implement, and any number of processors can use this single bus at a time. However bandwidth cannot scale up to meet the needs of current generation hardware and is soon becoming the bottleneck in high end systems. HyperTransport HT started with the release of the Athlon 64, AMD's direct competition to Intel's Pentium 4, in 2003. AMD figured that the FSB would slow down and kill their efficiency advantage, which was AMD's selling point. By putting the memory controller directly on the processor chip, the FSB was no longer needed to connect processor and memory via the chipset.