Discuss various types of losses in a transformer.
6. A] Discuss various types of losses in a transformer. Answer: The transformer has two types of losses :• Core or Iron losses [constant losses]• Copper losses [cu losses] Iron…
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Problems on three phase synchronous generator [BEE]
Problems on three phase synchronous generator 8.C] A 12 pole, 500 rpm star-connected alternator has 48 slots with 15 conductors per slot. The flux per pole is 0.02 Wb and…
Problems on 3 phase induction motor [BEE]
Problems on 3 phase induction motor 7.C] A 12 pole 3 phase alternator is coupled to an engine running at 500 rpm. It supplies an induction motor that has a…
Problems on transformers [BEE]
Problems on transformers 6.C] A 250 KVA, 11000/415 volts, 50 Hz single phase transformer has 80 turns on the secondary. Calculate i) Rated primary and secondary currents ii) Number of…
Calculate the emf induced
5.C] A 4 pole, 1500 r.p.m. D.C. generator has a lap wound armature, having 32 slots and 8 conductors per slot. If the flux per pole is 0.04Wb, determine the…
When a three phase supply given is given to the three phase induction motor explain how a rotating magnetic field produces in the airgap of the machine.
8 c]When a three phase supply given is given to the three phase induction motor explain how a rotating magnetic field produces in the airgap of the machine.
A 3-phase 16-pole alternator has a star connected winding with 144 slots and 10 conductors per slot. The flux per pole is 0.03 webers sine-distributed and the speed is 375 rpm. Find the frequency and the phase and line voltages.
8 b]A 3-phase 16-pole alternator has a star connected winding with 144 slots and 10 conductors per slot. The flux per pole is 0.03 webers sine-distributed and the speed is…
An alternator running at N rpm induces an emf in the armature conductors of the machine and obtain an expression of induced emf.
8 a] An alternator running at N rpm induces an emf in the armature conductors of the machine and obtain an expression of induced emf. Solution :
With the help of diagram explain the construction details of salient and non-salient generator.
7 c ] With the help of diagram explain the construction details of salient and non-salient generator. Solution : There are two types of alternatorsi) Salient pole of Alternatorii) Non…
A three phase 400 V 50 Hz supply is given to three induction motor with 4 pole running and runs at 1440 rpm. Determine the speed of the rotor and frequency of the rotor current.
7 b] A three phase 400 V 50 Hz supply is given to three induction motor with 4 pole running and runs at 1440 rpm. Determine the speed of the…