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Why the efficiency of generator is more than the motor in case of swinburne's test?
Wiki User
∙ 11y ago
the generator windings are made of more thicker windings . Hence lesser resistance and lower Cu losses
Wiki User
∙ 11y ago
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Difference between induction motor and induction generator?
in case of induction motor the rotor speed is less than synchronous speed giving positive slip but in case of generator the rptor speed is greater than synchronous speed giving negative slip.......
How do you calculate the Volumetric efficiency of a hydraulic motor?
Dear friend, Drive the motor through a pump. Supply oil to achieve a given rpm and pressure. Some oil will come out of case drain port and some from the out put port of the motor. Measure the out put flow of the motor and input flow to the motor. out put by input will be the volumetric efficiency ( the loss is case drain ) ( alternatively, case drain and output flow fof the motor can be measured, then output flow divided by the sum of output flow and case drain flow is the efficiency ) Rajeev T G tgr-bw@bw.ltindia.com
You Have 6.6 Kv No Break Synchronous Generator and working as synchronous motor in normal case and there 3 c.t on star point this c. t sens the current only when working as generator anybody knew how?
when generator works as a motor then the cuurrent path is reversd.
A generator produces 240volts at 25 amperes. If the mechanical and electrical power losses total 900 watts what is the efficiency of the generator?
Efficiency is measured as the ratio of power output to power input. In this case the power input of the generator is 240V * 25A = 6000 VA however the stated losses are 900 W so the power output is 6000 - 900 = 5100W. Then the efficiency would be 5100/6000 = 0.85 or 85% efficient.
Name the essential parts of the motor and generator?
Engine Alternator Cooling and exhaust systems fuel tank voltage regulator control panel
Which pair is made up of two things that work in opposite way's A bar magnet and horseshoe magnet B chemical energy and mechanical energy C generator and motor D solar energy and geothermal energy?
C. Generator and motor. In case of generator mechanical energy is converted into electrical energy But in motor, electrical energy is changed into mechanical energy.
How does a generator act like a motor in syncronization process of disel generator?
this case called (reverse power ) and happen when there is a phase difference between parallel generators and results in passing a circuilating currents from the higher voltage one to the other which result that one to act as a motor
Can a motor drive a generator which can produce power more than the power used by the motor to drive the generator?
Claims about perpetual motion machines are always false because they ignore the inevitable losses of energy which must be overcome to make any machine operate so that it can do its intended work. Such losses mean that any machine, whether electrical or mechanical, must be supplied with more input power than it can convert into output power. In the case of electrical machines there are many reasons for energy losses: Bearing friction losses; "windage" losses caused by air having to be moved out of the way by spinning parts such as rotating armatures and cooling fans; magnetic hysteresis losses absorbed by eddy currents flowing in rotor armature and stator laminations; commutation losses in dc machines and slip ring losses in ac machines; excitation losses caused by the need to supply energy to the coils in the stator of a machine in order to magnetize it; general electrical resistance losses caused by the need to use energy to force electric currents to flow through the windings of any electrical machine. Whilst engineers have found ways to reduce each one of those types of loss to a minimum, it is still a fact of life that no electrical machine can be 100% efficient. In the case of a motor, it will always require more energy to be supplied to it than it can convert to mechanical power. In the case of a generator, it will always require more mechanical power to be supplied to it than it can generate as electricity. Some electrical machines have a power-conversion efficiency of up to 80% but most have efficiencies much less than that. If a motor and a generator were linked together to form a motor-generator set (the motor driving the generator driving the same motor) then, if both machines were as good as 80% efficient, that would mean the combined efficiency of the system of would only be .8 x .8 = .64 i.e. 64%. In other words, to keep the motor-generator set running, additional power equal to at least 36% of the motor-generator set system's own power would need to be supplied from an external source. Those facts make the set-up described in the answer to this question shown below pure nonsense. Period.
What is the efficiency of a 240 volt single phase 3 horse power motor which draws 12 amps under full load?
This might be a homework question, in which case you find the power, which is 3 x 746 watts, and divide by the voltage to find the current taken if the efficiency is 100%, and that is 9.325 amps. So the efficiency is 9.325/12 or 77.7%. In practice the question is complicated by the power factor of the motor, which means that the watts taken are less than the volts times amps. The power factor could well be 0.777, in which case the efficiency would be 100%.
Generator is used for solar energy true or false?
True. The generator in that case is the sun.
What does a transfer case shift motor do?
What does a transfer case shifter motor do
Generator Rental?
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