SOLVE THE PROBLEM, SHOW YOUR COMPLETE SOLUTION AND MAKE SURE THAT THE FINALS ANSWERS ARE IN 4 DECIMAL PLACES.  An 8 pole DC shunt generator with 778 wave connected armature conductor and running at 500 RPM supplies a load of 12.5 ohms resistance. Assuming that the flux per pole is 9.83 mWb, the armature resistance is 0.24 ohms and the field resistance is 250 ohms. Calculate the over-all and maximum efficiencies if the SPL is 300 watts.

Q: A dc generator has a field flux of 0.001 Wb and 4 poles. The machine operates with at shaft speed of…

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Q: Q2-A 4- pole lap-wound, 900 r.p.m shunt generator has armature and field resistances of 0.442 and…

A: In this question we will find terminal voltage and load current...

Q: A 6 pole, wave wound DC shunt generator has a useful total flux of 420 mWb. The armature winding…

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Q: A compound generator has a lap-wound armature with 200 slots and four turns per coil. It is rotating…

A: As per the guidelines given, We can only provide the solution of the first three questions in…

Q: ) the armature windings of a 12-pole DC machine are composed of 72 coils with 10 windings, and the…

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Q: 2) the armature windings of a 12-pole DC machine are composed of 72 coils with 10 windings, and the…

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Q: a)find the flux density in airgap. b)if the stator is excited with 50 Hz current, find the…

A: Given: A 2 pole synchronous machine in which lg=2.5mmAg=500cm2I=5AN=500μc=∞ According to question:…

Q: A 4 pole DC shunt generator with 800 duplex wave connected armature conductors supplies a load of…

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Q: A 200 V, 6 pole, lap connected long shunt compound wound d.c. The resistances of the armature series…

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Q: There are 4 different coils on the each gears in the magnetic system below. All of these coils are…

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Q: A DC machine has total armature ampere conductors of 4500 and total flux in the machine is 0.14 wb.…

A: Given information is shown below:

Q: Q2) A 6 pole, wave wound DC shunt generator has a useful total flux of 420 mWb. The armature winding…

A:

Q: Q10. The e.m.f. generated in a D.C. generator is directly proportional to (a) Flux/pole (b) Speed of…

A: Emf equation of DC Generator: Eb = PΦNZ / 60A

Q: a short shunt compound generator supplies a current of 100 A at 220 V.the resistance of the shunt…

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Q: 4- In DC Shunt genrator, the effect of flux Produced by armater on main Flux Produced by the field…

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Q: A 230 V dc shunt generator delivers 150A with friction loss of 1200W. The armature shunt field…

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Q: A D.C. shunt motoro is a 200 V D.C. supply- Conneded to resistance of 0.2r and at 450 revmin.…

A: In the dc shunt motor Find the change in the flux and torque if the armature current and speed…

Q: b) An 8 pole, lap-wound armature has 1200 conductors and a flux pole is 0.06wb. Determine the gm.f…

A: Number of poles poles  P = 8 Number of conductors   Z = 1200 Flux per pole   Φ  = 0.06 wb  Speed…

Q: b) A newly built institution has bought a D.C. shunt generator to supply a library in order for…

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Q: An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 16…

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Q: A shunt DC generator has no load terminal voltage of 140V. Armature resistance is 1ohm and shunt…

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Q: - Indicate whether the following statement are true or false

A: in the DC machine the emf can be calculated using the following equation E =  ∅ZPN / 60 A

Q: A four-pole, lap-would DC machine has 462 conductors in the armature. The average flux per pole is…

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Q: Electric Machines2 What are the characteristics of the rotating magnetic field created by…

A: The rotating magnetic field created by the three-phase current in three-phase stator winding: When a…

Q: Q2/ A lap-wound de generator runs at 600 rpm has an open circuit voltage of 290 V. the commutator…

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Q: The voltage induced by a 6-pole DC generator running at 600 [RPM] with 100 slots on the armature and…

A: Given,  A DC generator has,  Number of poles,  p = 6  Speed of rotor,  N = 600 rpm  Flux per pole =…

Q: In squirrel cage induction machine... a) The rotor mechanical speed is equal to the synchronous…

A: When a three-phase supply is provided to the stator of the induction motor the rotating magnetic…

Q: An 8-pole dc generator has a duplex lap wound armature with 64 coils and 16 turns per coil. The…

A: Ther are a total of 64×16=1024 turns on the armature of this machine, so the number of turns per…

Q: An electromagnet has a movable iron part and dimensions of magnetic circuit with uniform cross…

A: a) R= 1697652.73 H-1, L= 9.694 mHb) flux= 70.69 micro Wb, flux density= 0.118 T, field intensity of…

Q: Q choose the correct answer: 1-Brushless excitation system consisting of.... a- Stator field winding…

A: Given

Q: A 900 rpm, 4 pole wave wound shunt motor takes 300 A. The flux per pole is 0.02 Wb and the armature…

A: back emf = Flux×speed×armature conductors60×No. of polesNo. of parallel paths. power developed in…

Q: A 4 pole machine generates 250 volts when operated at 1500 rpm. If the flux per pole is 1.85 x…

A: It is given that: P=4Ea=250 voltsN=1500 rpmϕp-p=1.85×106 maxwell=1.85×106×10-8WbA=2no. of armature…

Q: A 4 pole DC shunt generator with a shunt field resistance of 109 ohms and an armature resistance of…

A: DC shunt Generator

Q: A 12 pole generator has a lap wound armature with 78 slots with 40 conductors per slot. Then the…

A: Given generator has a lap wound armature, Total slots are 78,

Q: A 6-pole d.c. motor has a wave-wound armature with 900 conductors. The useful flux per pole is 30…

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Q: When the DC machine is running under saturation condition, then flux per pole decreases due to…

A: Ans. True

Motor Load, Torque, and Power Quality Requirement

An electric motor is a gadget that changes electrical energy into mechanical energy over to follow up on a mechanical burden. The weight set on the motor because of this mechanical movement is known as motor load. Appropriately matching the motor burden to the engine is vital to forestall harm to the engine or wasteful and unnecessary expensive activity. Engines perform such undertakings as moving a thing starting with one spot then onto the next, cutting it, changing its shape, etc. The motors might be evaluated as far as a few variables including power yield, voltage, current, and temperature. Harm to an engine might happen when it is worked under over the top engine load contrasted with its appraised limit.