Al How does a salient-pole rotor differ from a cylindrical rotor in synchronousmachines. Where are the salient-pole type of synchronous machines used?D/ A pair of synchronous machines, on the same shaft, may be used to generate power at 60hz from the given source of power at 501Jz. Determine the minimum number of poles thatthe individual machines could have for this type of operation and find the shafi-speed inr.p.m.Q2/A/ What are the conditions for satisfving parallel operation of single phase transformer?Deduce an expression for the load shared by the two transformers in parallel when thetransformers have equal voltage ratio? Prove your answer.B/ A 50 KVA, 2300/230 V, 60 Hz transformer has a high voltage winding resistance of0.65N and a low-voltage winding resistance of 0.0065 2. Laboratory tests showed thefollowing results:Open circuit test: V = 230 V, 1 =5.7A, P = 190 WShort circuit test: V-41.5 V, I-21.7 A, P-No wattmeter was used.(a) Compute the value of prinàry voltaga needed to give rated secondary voltage when thetransformer is connected as a step-up onc and is delivering 50 KVA at a power factor of 0.8lagging. (b) Compute the efficiency under conditions of part (a).18Q3/ A/ A3-phase, 5.5kW, 440V, 5011z, cylindrical rotor S.M has synchronous reactance of(0+j2) 2/phase. When it is delivering its rated output the motor efficiency is 85% and loadangle is 20°. Find the excitation voltage, armature current and the power factor.B/ Explain two important functions served by the damper winding in a synchronousmotor.

NOTE- As you have posted multiple questions, we will solve all parts of the first question. 1) (a)…

How does a salient-pole rotor differ from a cylindrical rotor in synchronous machines. Where are the salient-pole type of synchronous machincs used? BI A pair of synchronous machines, on the same shaft, may be used to generate power at 60 hz from the given source of power at 501Jz Determine the minimum number of poles that the individual machines could have for this type of operation and find the shaft-speed in 1.р.m.

How does a salient-pole rotor differ from a cylindrical rotor in synchronous machines. Where are the salient-pole type of synchronous machincs used? BI A pair of synchronous machines, on the same shaft, may be used to generate power at 60 hz from the given source of power at 501Jz Determine the minimum number of poles that the individual machines could have for this type of operation and find the shaft-speed in 1.р.m.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.3P

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