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How much slip in a three phase synchronous motor?
Slip, , is defined as the difference between synchronous speed and operating speed, at the same frequency, expressed in rpm or in percent or ratio of synchronous speed. Thus
What is short circuit ratio?
Ratio of field current required to produce rated voltage in open circuit to the field current required to produce rated current in short circuit.
Difference between synchronous and asynchronous motors?
1)Synchronous motors are those that run only at Synchronous speed i.e. constant speed. But Motor can run in various speeds. 2)Synchronous motors runs at same speed of magnetic filed. but if one consider case of induction motor the rotor rotates at different speed than revolving magnetic field. there is slip between field and rotor.
How do you calculate the exit pressure of a nozzle?
How to calculate the ratio of the inlet-to-exit area of the nozzle
How do you calculate pressure ratio of compressor?
Inlet pressure/discharge pressure
Define generator short circuit ratio?
Checked Stephen J. Chapman's Electric Machinery Fundamentals page 287. It says: Short Circuit Ratio (SCR) for the synchronous generator is the ratio of the field current required for the rated voltage at OPEN circuit to the field current require for the rated armature current at SHORT circuit.
How do you calculate short circuit capacity of generator by using reactance of the winding?
The short circuit capacity of a generator can be calculated by dividing the generator's reactance by the sum of the generator's reactance and the total reactance of the system. This ratio will give you the short circuit capacity of the generator in relation to the total system capacity.
What is the design value of short circuit ration of generator?
short circuit ratio is the ratio of field current to open short circuit voltage n the open circuit current. its value for thermal is less than hydro type.
How do you calculate rpm of a wind turbine?
You can calculate the rotation speed (rpm) of a wind turbine by dividing the rotational speed of the generator (usually given in revolutions per minute, or rpm) by the gear ratio of the turbine. The gear ratio is the ratio of the number of teeth on the turbine's gear to the number of teeth on the generator's gear. This formula allows you to determine the turbine's rpm based on the generator's rpm and the gear ratio.
Is there any effect on fault level if generator short circuit ratio is high or low?
Probably... What ratio? X/R? X0/X1? X0/R0? Xd /Xd''? etc.
How do you calculate a ratio from a percent?
Formula to calculate the ratio
What is synchronous impedance?
Synchronous impedance is also known as the EMF method. It is a ratio of open circuits to short circuits, when they both are referred to the same field excitation.
What is short circuit ratio of an alternator?
Short circuit ratio is the ratio of field current required for the rated voltage at open circuit to the field current required for the rated armature current at short circuit
Calculate the intrinsic standoff ratio eta H of a UJT circuit where Rb1 is 1500 ohms and Rb2 is 265 ohms?
5.6 isn't the stand off ratio calcutaled by ===== Rb1/(Rb1+Rb2)
How do you calculate credit loss ratio?
how do we calculate credit loss ratio in banks financials
How much slip in a three phase synchronous motor?
Slip, , is defined as the difference between synchronous speed and operating speed, at the same frequency, expressed in rpm or in percent or ratio of synchronous speed. Thus
Is it true that a ratio is a rate?
No. It can be but need not be. For example, you might calculate the ratio of today's temperature in Celsius and in Fahrenheit and calculate the ratio. That is not a rate.
