Design of electrical machines by nagoor kani pdf icdst| ICDST repository of open access content. • This page provides the hosted documents by ICDST Respository related to the search term 'Design of electrical machines by nagoor kani pdf icdst' and is updated once a week. Electrcal machine design, A K Sawhney The book I found very helpful was Electrcal machine design, A K Sawhney. If you are planning to read on Design of Electrical Machines, my first suggestion would be Electrical Machine Design by A K Sawhney. Nagoor Kani Control Systems - Ebook download as PDF File (.pdf), Text File (.txt) or read book online. System Specifications Controllers Compensators State Machines. The study and design of automatic Control Systems.
List the advantages of direct coupling of rotating electrical machines. What are the assumptions made to calculate the slot leakage? Write the guiding factors for choice of number of armature slots of DC machine. Define brush contact loss. Write the relation between core area and weight of iron and copper for a single phase transformer. Differentiate core and shell type transformers. State the effect of change in air gap length in a three phase induction motor. Define Unbalanced Magnetic pull. State the merits of Computer Aided Design of Electrical Machines. What is the use of damper winding? (b) Derive the expression for the specific permeance of slots with double layer windings and for special purpose induction motors. [16 MARKS] 12. A 250 kW, 500V, 600 r.p.m. Generator is built with an armature diameter of 0.75m and a core length of 0.3m. The lap connected armature has 720 conductors. Using the data obtained from this machine, determine the armature diameter, core length, number of armature slots, armature conductors and commutator segments for a 350kW, 440V, 720 r.p.m 6pole d.c. Assume a square pole face with ratio of pole arc to pole pitch equal to 0.66. The full load efficiency is 0.91 and the i nternal voltage drop is 4% of rated voltage. The diameter of commutator is 0.7 of armature diameter. The pitch of commutator segments should not be less than 4mm. The voltage between adjacent segments should not exceed 15Vat no load. [16 MARKS] OR (b) Explain the design procedure for the shunt field winding of D.C. [16 MARKS] 13. C++ An Object Oriented Language Database. Visual Basic. Ebiz new presentation pdf. Microsoft Access. ![]() (a) Calculate approximate overall dimensions for a 200KVA, 6600/440V, 50Hz, 3 phase core type transformer. The following data may be assumed: emf per turn = 10V, Maximum flux density = 1.3 Wb/m2, current densithy = 2.5A/mm2, window space factor = 0.3, overall height = overall width, slacking factor = 0.9. Use a 3 stepped core. For a three stepped core, width of largest stamping = 0.9d, and net iron area = 0.6d2 where d is the diameter of circumscribing circle. [16 MARKS] OR (b) A 250 KVA, 6600/400V, 3 phase core type transformer has a total loss of 4800W at full load. The transformer tank is 1.25m in height and 1m X 0.5m in plan. Design a suitable scheme for tubes if the average temperatur e rise is to be limited to 35°C. The diameter of tubes is 50mm and are spaced 75mm from each other. The average height of tubes is 1.05m. Specific heat dissipation due to radiation and convection is respectively 6 and 6.5 W/m2-°C. Assume that convection is improved by 35% due to provision of tubes. [16 MARKS] 14. (a) Write notes on.
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