A long shunt generator delivers 50 A at 500 V at full load. The shunt field, armature and series field resistances are 400 Ω, 0.2 Ω and 0.08 Ω respectively. Iron loss is 1200 W and friction and windage losses total 800 W. Then find the total efficiency of the generator.

A three-winding transformer is connected to an AC voltage source as shown in the figure. The number of turns is as follows: N₁ = 100, N₂ = 50, N3 = 50. If the magnetizing current is neglected, and the currents in two windings on secondary side are 2230° and 22150°, then what is the value of the primary current in Ampere? I 0000000000- N₁ № ₂ Z 00000 00000 Z N3 H I₁₂ I₁₂₁ ¹3

A 4-pole dc generator with duplex lap winding has 48 slots and 4 elements per slot. The flux per pole is 2.5 x 106 maxwells and it runs at 1500 rpm. Find the output voltage.

A single phase 60 Hz transformer has its core volume of 1.5x10-3 cu m. The maximum flux density is 1.0 tesla and the hysteresis constant of the core is 6000. find the hysteresis loss.

AC Machinery Fundamentals A three-phase delta-connected six-pole winding is installed in 36 slots on a stator. There are 150 turns of wire in each slot of the windings. All coils in each phase are connected in series. The flux per pole in the machine is 0.060 Wb, and the speed of rotation of the magnetic field is 1000 r/min. What are the resulting phase and terminal voltages?

6. show the solution and draw a figure

Figure 1 shows an electric generator with 3 rotor windings as marked by a-1, b-2 and c-3. A permanent magnet is placed in the middle of the rotor with the rotational direction. The 3 rotor windings are connected through line to the three identical load resistors R₁, R₂ and R3 in Wye connection. The resulting currents in each line are la, lb and Ic. Design the generator-line-load connections, and propose the methodologies to construct 3-phase 3-wire connection. Use a diagram to justify your answers. D (0 N $1 Figure 1

Please solve , last time i got wrong answer

A 50 Hz CT has 20 primary turns and 60 secondary turns, on a core of cross section 8 cm2. The secondary current is 5 amp. The impedance of the burden and the secondary winding are together equal to 0.7 + j 0.4 ohm. The excitation current required in the primary current to produce the working flux with the secondary open circuit is 0.6 angle 45 amp. Calculate the flux density in the core and the ratio and phase errors.

A long shunt compound generator has a shunt field with 1200 turns per pole and a series field with 4 turns per pole. If the shunt field and series field ampere-turns are, respectively, 1200 and 196, calculate the power delivered to a load when the terminal voltage is 230 V. P = W