a) The figure below shows the per-phase equivalent circuit of a two- pole three-phase induction motor operating at 50 Hz. The voltage (E1) across the magnetizing inductance is 210 V, and the slip (s) is 0.05. What is the developed torque produced by the motor ? 0.04 Q j0.22 0 j0.22 0 0.05 0 j6.28 NE E1 b) A 4 poles , 50HZ ,Y-connected three phase induction motor has the per phase equivalent circuit parameters of ( R1= R2= 0.12 , X1 = X2 = 0.6 , Xm =12 ) Q and 2 following at rated slip of 0.03 : %3D = 20L0°. Use exact equivalent circuit to determine the I. Stator current I. Magnetizing current II. Power factor IV. Developed torque c) What is the physical meaning for each of the following induction motor parameters: R1 ,R2 ,Rc ,X1 ,X2 ,Xm ? d) what is synch ronous watb ?.

Please solve this problem step by step and illustrate your answer properly. Write your answer in a piece of paper please. Box the final answer.

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Which of the following statements related to wind turbine types are true? Select one or more: a. The Savonius rotor will not start without an auxiliary motor b. In modern industrial-sized wind turbines, the most common type of turbine is a 3-bladed wind turbine. c. In a downwind turbine, the blades are on the (upper) side of the wind when viewed from the nacell

Draw the per-phase equivalent circuit of a three-phase squirrel-cage induction machine. List all of the elements in the equivalent circuit and briefly state their function

A 6 pole wave wound d.c. shunt generator has 500 conductors. A generator delivers 50 kW of power at 250 voltage at full load. The resistance of the field circuit is 125 2. Actual brush shift is 10°. Then find the demagnetizing and cross magnetizing ampere turns per pole and how many additional turns must be wound on each pole to eliminate the demagnetizing effect.

Question -9b

Q5)A- A 3-phase Induction motor has an efficiency of 0.91 when it delivers an Output power of 22KW. At this load,the stator copper losses equals the rotor copper losses and the total copper losses equals the no- load losses the mechanical losses are one-fourth the no-load losses Find the slip write equations with drawing power flow Diagram ? B-Define the following: (i)Regulation (ii) Slip (iii)Core and shell Transformer (iv)PM motor

9. How does the concept of magnetic saturation impact the performance of transformers and inductors?

A 2300V, 1000 kVA, 0.8 lagging power factor, two-pole, 60HZ, Wye-connected, synchronous generator has a synchronous reactance of 1.1 ohms and an armature resistance of 0.15 ohms. Its losses due to friction and friction with the air are 24 kW and its core losses are 18 kW. The field circuit has a dc voltage of 200v and a maximum of 10A. The field circuit current is adjustable in the range of 20 to 200 ohms.The magnetization curve of this generator is shown in the figure below.a) How much field current is required for Vt to equal 2300V when the generator is running without load?b) What is the voltage generated intermittently by this machine at nominal conditions?c) How much field current is needed to make the voltage at the terminals Vt=2300V when the generator works in nominal conditions?d) How much power and torque should the prime mover of the generator be able to supply?