Dc Machine

1. Calculate the voltage induced in the armature winding of a 4-pole, lap wound, dc machine having 726 conductors running at 1800rpm. Flux per pole is 0.003Wb a. 655.2V b. 468.2V c. 720.4V d. 236.4V 2. A dc machine has a 4pole, wave wound armature with 46 slots and 16 conductors per slot. If the induced voltage in the armature is 480V at 1200rmp, determine the flux per pole. a. 48mWb b. 1.2mWb c. 0.94mWb d. 16.3mWb 3. A 115V shunt motor has an armature whose resistance is 0.22ohm. Assuming voltage across the brush contact is 2 volts, what armature current will flow when counter emf is 108volts. a. 22.7A b. 31.8A c. 34.6A d. 27.2A 4. The nameplate rating of a shunt motor is 150hp, 600volts, 205 amp, 1700 rpm. The resistance of the shunt field is 240 ohms and the total armature resistance is 0.15ohm. Calculate the counter emf. a. 569.63V b. 586.52V c. 569.25V d. 630.75V 5. The terminal voltage of a motor is 240 volts and its armature current is 60A. The armature resistance is 0.08ohm. What is the hp developed by the motor? a. 18.92 b. 17.26 c. 16.25 d. 26.64 6. A certain load to be driven at 1750 rpm requires a torque of 60 lb-ft. What hp will be required to drive the load? a. 20 b. 15 c. 12 d. 16 7. A shunt motor is running at 1200 rpm for a load which requires an armature current of 50A from 230V sources. At no load, the armature current is 5A. If the effect of armature reaction has reduced the air gap flux by 2% from no load to full load, determine the no load speed. The armature resistance is 0.15Ω. a. 1212rpm b. 1012rpm c. 1200rpm d. 1182rpm 8. In a motor, the armature resistance is 0.1ohm. When connected across 110volts main, the armature takes 20amp and it speed is 1200rpm. Determine its speed when the armature takes 50A from the same mains, with field increased 10%. a. 1023rpm b. 1061rpm c. 1171rpm d. 1251rpm 9. A 120V dc shunt motor having an armature circuit resistance of 0.2ohm and field circuit resistance of 60 ohms, draws a line current of 40A at full load. The brush drop is 3V and full load speed is 1800rpm. What is the speed at 125% full load? a. 1765rpm b. 1863rpm c. 3600rpm d. 720rpm 10. A shunt generator while running light as a motor at 1000rpm takes 12A from 115V mains. The field currents is 7A and the armature resistance is 0.03 ohm. Determine the stray power loss? a. 573W b. 543W c. 942W d. 862W 11. A shunt motor runs at 1100 rpm, at 230V and draws a line current of 40A. The various losses are: core loss 200W; friction and windage loss 180W; electrical loss due to brush contact 37W; stray load loss 37W. The armature and field circuit resistances are 0.25Ω and 230Ω, resp. Solve for motor efficiency. a. 89.56% b. 88.43% c. 87.89% d. 92.48% 12. A 50hp 500V shunt motor draws a line current of 4.5A at no load. The shunt field resistance is 250ohms and the armature resistance is 0.3 ohm. The brush drop is 2volts. The full load line current is 84A. What is the efficiency? a. 89.45% b. 87.26% c. 86.25% d. 76.64% 13. Calculate the efficiency of a 230V shunt motor from the following data: input current is 19.8A, balance reading is 14lbs, tare weight is 2lbs., brake arm is 2 ft long & speed is 1100rpm a. 82.4% b. 81.4% c. 84.2% d.86.5% 14. A 230V, 15hp dc shunt motor has friction and iron loss of 200W. The armature resistance is 0.3 ohm and shunt field resistance is 115ohms. What is the maximum efficiency of the motor? a. 86.9% b. 87.4% c. 88.3% d. 85.1% 15. A 120V shunt motor takes 75A armature current at full load. Armature resistance is 0.2 ohms and brush contact drop is 2V. Find the starting resistance to limit the starting torque to 150% of rated load torque at the instant of starting. a. 0.85Ω b. 0.82Ω c. 0.82Ω d. 0.88Ω 16. The armature of a 230V shunt motor has a resistance of 0.18ohm. A resistance is inserted in series with the armature at the instant of starting so as not to exceed 76A at starting. Calculate the value to which this resistance can be reduced when the armature accelerates until Ec is 168V. Brush drop is 2V. a. 0.61Ω b. 2.82Ω c. 0.81Ω d. 0.28Ω 17. The armature circuit resistance of a 25hp, 250V series motor is 0.1ohm. The brush drop is 3V and the resistance of the line series field is 0.05ohm. When the series motor takes 85A, the speed is 600rpm. Calculate the speed when the current is 40A? a. 1260rpm b. 1171rpm c. 1282rpm d. 1246rpm 18. A series motor having an armature resistance of 0.1Ω and a field resistance of 0.15Ω, takes 48A at 230V and 720rpm. The total core and friction losses are 650W neglecting stray load and brush contact losses, calculate torque developed. a. 138.8N-m b. 141.8N-m c. 130.2N-m d. 113.6N-m 19. A series motor having an armature resistance of 0.1Ω and a field resistance of 0.15Ω, takes 48A at 230V and 720rpm. The total core and friction losses are 650W neglecting stray load and brush contact losses, calculate the motor efficiency. a. 88.9% b. 85.7% c. 83.6% d. 78.6% 20. A 10hp, 230V, 1000rpm series motor, having a rated efficiency of 85.5% armature resistance including brushes of 0.28Ω and a field resistance of 0.15Ω. What value of starting resistance so that the starting torque is equal to 150% of the rated load torque? a. 4.95Ω b. 4.52Ω c. 5.94Ω d. 4.67Ω 21. A six pole dynamo, with interpoles, requires 360 inductors on its armature, with three turn per coil and two coil slides per slot. Determine the number of commutator bars. a. 60 b. 90 c. 120 d. 160 22. A four pole generator has 500 conductors on the armature. If the generator is running at 1200rpm, find the average voltage generated between brushes for wave winding. The total flux per pole is 10^6 lines. a. 200V b. 100V c. 120V d. 250V 23. Assuming a constant field excitation, calculate the no load voltage of a separately excited generator the armature voltage is 150V at 1800rpm. What is the voltage if the speed is increased to 2000rpm? a. 167 b. 120 c. 133 d. 180 24. A 10kw 250V self-excited generator, when delivering rated load, has an armature-circuit voltage drop of 5% of the terminal voltage and a shunt field current equal to 5% of the rated load current. Calculate the resistance of the field circuit. a. 125ohms b. 250ohms c. 500ohms d. 62.5ohms 25. A self-excited shunt generator supplies a load of 12.5kW at 125V, the field resistance is 25Ω and the armature resistance is 0.1Ω. The total voltage drop because of brush contact and armature reaction at this load is 3.5V. Calculate the induced armature voltage. a. 129V b. 263V c. 135V d. 139V 26. A 2500kW 600V 16pole generator has lap wound armature with 2360 conductors. If the pole face covers 65% of the entire circumference, calculate the number if pole face conductors in each pole of a compensating winding. a. 6 b. 9 c. 5 d. 4 27. A certain 110V shunt generator has an armature and brush resistance of 0.06ohm at full load of 85A. The resistance of the shunt field is 45ohms, and the stray power losses are found to be 897watts. Calculate the full load efficiency. a. 85.2% b. 89.4% c. 86.5% d. 84.8%

28. A 250kW 230V compound generator is delivering 800A at 230V.The shunt field current is 12A. The armature resistance is 0.007ohm and the series field resistance is 0.002ohm. The stray power at this load is 5500 watts. The generator is connected long shunt. Determine the generator efficiency at this load. Stray load loss is 1% of output. a. 92% b. 94% c. 95% d. 90% 29. A separately-excited dc generator has the following data: armature resistance 0.04Ω, field resistance 110Ω, total core and mechanical losses 960W, voltage across the field 230V, the generator supplies a load at a terminal voltage of 230V. Calculate the maximum value of the generator efficiency. a. 93.8% b. 92.7% c. 93.2% d. 98.2% 30. Two shunt generators A & B running in parallel share a load of 100kW equally at a terminal voltage of 230V. On no load their voltage rises to 240 and 250V respectively. How will they share the load when the total current is reduced to half of its original value. a. 20kW & 30kW b. 18kW & 32kW c. 25kW each d. 15kw & 35kW Supplementary Problems 1. Dirt on the motor commutator may produce ______ a. isolation b. excessive sparking c. lower torque d. power loss 2. If a motor frame is found excessively hot, which of the following is the LEAST likely cause a. Very high ambient temperature b. faulty stater c. inadequate internal ventilation d. excessive loading 3. The simplest form of a motor controller is a. drum switch b. relay c. magnetic switch d. toggle switch 4. Rapid stopping of motor by momentarily reversing its connections to the supply is.. a. jogging b. plugging c. inching d. sequence operation 5. A dc generator may loose its residual magnetism because of… a. varying loads b. vibrations c. over-excitation d. heating or overload 6. The simplest way to shift load from one dc shunt generator running in parallel with another is to… a. adjust their field rheostat c. insert resistance in their armature circuits b. adjust speeds of their prime movers d. use equalizer connections 7. For both lap and wave windings, there are as many commutator bars as the number of a. poles b. slots c. armature conductors d. winding elements 8. It is a DC motor that tends to over speed when the field opened while running a. shunt motor b. series motor c. split phase motor d. over-compounded motor 9. In Dc shunt motor, how is the shunt field connected in relation with the armature? a. parallel b. series – parallel c. parallel series d. series 10. Dc shunt motor are commonly used in what application? a. high starting torque b. low no load speed c. constant speed d. high speed 11. Which motor is used to start heavy loads? a. shunt b. commulatively compound c. shunt d. shaded pole 12. When the load is removed, which motor will run at the highest speed? a. series b. commulatively compound c. shunt d. differentially compound 13. Which motor is suitable for elevator? a. series b. commulatively compound c. shunt d. differentially compound 14. If a self-excited dc generator after being installed, fails to build up on its first trial run, the first thing to do is to. a. increase the field resistance c. reverse field connections b. check armature insulation resistance d. increase the speed of prime mover 15. The voltage regulation of over compound generator is always a. positive b. negative c. zero d. high 16. A 240 volt dc shunt motor has an armature current of 50A, armature resistance of 0.25 running at 1200rpm. If it is run at 220V, what value of armature current when driving the same load. The field is adjusted so that the speed remains at 1200rpm. a. 55 b. 50 c. 60 d. 57.5 17. A dc shut motor develops 15hp at 120V. The armature resistance is 0.061 ohm. What is the armature current? a. 95.81A b. 91.85A c. 96.15A d. 98.15A 18. A dc shunt motor develops 15hp at 120V. The armature efficiency is 95%. What is the back emf? a. 114V b. 122V c. 118V d. 117V 19. A 120V shunt motor has an armature resistance of 0.08ohm and field resistance of 60ohms. What current is drawn when its back emf is 114.8V. a. a. 65A b. 67A c. 63A d. 70A 20. A 440V 75hp shunt motor has an armature resistance of 0.185 and a field resistance of 350ohms. The current drawn at full load is 135A. What is the back emf in volts? a. 415.3 b. 398.3 c. 394.8 d. 417.1 21. A 4 poles lap wound dc machines has 728 active conductors running at 1800rpm. The flux per pole is 30mWb, the armature current is 120 A, what is the electromagnetic power developed in the armature in kW? a. 72.4 b. 78.6 c. 65.5 d. 62.4 22. The armature and field circuits of a 230V shunt motor have resistance of 0.31 and 115 ohms respectively. It takes 52A when operating at a certain load. What is the armature power developed? a. 14.4hp b. 24.6hp c. 7.5hp d. 12.4hp 23. A 500 Volt shunt motor running at 720rpm takes an armature current of 50A, its effective resistance 0.40ohm. When a resistance of 1.6 ohm is placed in series with the armature, what is the new speed? Assume that load torque is constant. a. 720rpm b. 600rpm c. 750rpm d. 680rpm 24. A dc shunt motor runs at 900rpm from a 460V supply when taking an armature current of 25A. Calculate the speed at which it will run from 230V supply when taking an armature current of 150A. The resistance of the armature circuit is 0.8ohm. Assume flux per pole at 230V have to decrease to 75% of its value at 460V a. 495 b. 485 c. 585 d. 595 25. A separately-excited motors runs at 1045rpm, with a constant field current, while taking an armature current of 50A at 120V, the armature resistance is 0.1Ω. If the load on the motor changes such that it now takes 95A at 120V, determine the motor speed at this load. a. 1004rpm b. 1104 rpm c. 1014rpm d. 994rpm 26. A 20 hp, 250V shunt motor has an armature circuit resistance of 0.22Ω and field resistance of 170Ω. At no load and rated voltage, the speed is 1200rpm and the armature current is 3A at full load and rated voltage, the line current is 55A, and the flux reduced 6%(due to the effects of armature reaction) from its value at no load. What is the full load speed? a. 1220rpm b. 1188rpm c. 1200rpm d. 1260rpm 27. A shunt motor with an armature resistance of 0.15ohm is running at 1200rpm for a load which requires of armature current of 50A from a 230V source. At no load, the armature current is 5A. If the effect of armature reaction has reduced the air gap flux 2% from no load to full load, what is the no load speed? a. 1215rpm b. 1268rpm c. 1209rpm d. 1212rpm

28. The armature of a dc machine running at 1200rpm carries 45A in current. If the induced armature voltage is 130V, what is the torque developed by the armature> a. 46.5N-m b. 4.65N-m c. 45.6 N-m d. 456N-m 29. Calculate the electromagnetic torque developed in the armature of a 4 pole, lap wound dc machine having 728 active conductors and running at 1800rpm. The flux per pole is 30mWb. The armature is designed to carry a maximum current of 100A. a. 34.76N-m b. 3.476N-m c. 347.6N-m d. 3476N-m 30. A 4 pole motor is lap wound with 728 conductors, and has a flux of 25mWb per pole. The armature takes 50A in current; the resultant demagnetizing effect due to armature reaction reduces air gap flux by 5%. Calculate the develop torque. a. 137.6N-m b. 167.3N-m c. 144.8N-m d. 176.3N-m 31. The armature of a motor has 400 active conductors, the flux density in the field being 3000 gauss. The axial length of the armature is 20.32cm. the current is 30A. Determine the total forced exerted in the armature. a. 731.5N b. 645.9N c. 0.07N d. 439.2N 32. A dc motor takes an armature current of 105A at 480V when running at 720rpm. The resistance of the armature circuit is 0.2ohm and the field resistance is 96ohms. What is the torque developed in the armature? a. 688N-m b. 610N-m c. 752N-m d. 638N-m 33. An electric motor develops 20 metric HP at a speed of 600rpm. What is the torque? a. 240N-m b. 290N-m c. 210N-m d. 260N-m 34. A 4 pole lap wound armature has 144 slots with two coil sides per slot, each coil having two turns. If the flux per pole is 20mWb and the armature rotates at 720rpm. What is the induced voltage? a. 138.24V b. 34.96V c. 69.12V d. 276.48V 35. A dc shunt motor develops 7.8Hp at 120V, the armature efficiency is 93%. What is the armature effective resistance> a. 0.1ohm b. 0.06ohm c. 0.16ohm d. 0.05ohm 36. A certain shunt motor has an armature resistance of 0.05. It draws 50A at a terminal voltage of 120V. Assume other miscellaneous losses of 1%. Determine the output horsepower of the motor. a. 8.5hp b. 7.1hp c. 6.8hp d. 7.8hp 37. In a brake test the effective load on the branch pulley was 38.1kg, the effective diameter of the pulley is 63.5cm and the speed is 12r.p.s. The motor took 49A at 220V. What is the efficiency at this load? a. 85% b. 80% c. 86% d. 83% 38. A 240V dc motor on brake test took 52A when running at 1500rpm. The spring balance at the end of the 76cm brake arm reads 93.5N. What is the efficiency of the motor at this load? a. 0.85 b. 0.95 c. 0.90 d. 0.86 39. The shaft power of a shunt motor is 7.8hp. Its armature draws 50A from 120V. The field winding draws 1.2A. What is the efficiency of the motor> a. 94.7% b. 93% c. 96.5% d. 98.2% 40. A 15hp 220V, 1200rpm shunt motor takes 50A. Its armature resistance is 0.1ohm and field resistance is 220ohms. Brush contact voltage drop is 2V, friction and windage loss is 400W and stray load loss of 1% of the output. Calculate the efficiency. a. 91.8% b. 92.4% c. 90.4% d. 94.6% 41. A 250V, 10hp shunt motor has an armature resistance of 0.5Ω and a field resistance of 250Ω. The motor takes a current of 5A on no load and 37.1A on rated load. Determine its rated efficiency. a. 88.4% b. 76.4% c. 86.5% d. 790.7% 42. A shunt motor runs at 1100rpm, at 230V and draws a line current of 40A. The armature and field circuit resistance are 0.25Ω and 230Ω, respectively. Calculate the motor speed if the output power is reduced by 50%. a. 1125rpm b. 1344rpm c. 1080rpm d. 2200rpm 43. A 440V shunt motor has an armature resistance of 0.8phm and field resistance of 200ohms. What is the armature power developed when giving an output of 7.46kW at 85% efficiency. a. 7.56kW b. 8.46kW c. 7.46kW d. 7.23kW 44. In a 5hp, 230V, 1500rpm shunt motor, the resistance of the armature including brushes is 0.175ohm and that of the shunt field is 610ohms. The stray power losses when the motor delivers rated voltage is 305W. The efficiency at rated load is nearest to…. a. 98% b. 89% c. 90% d. 85% 45. A 10hp, 230V shunt motor takes a full load line current of 40A. The armature and field resistances are 0.25Ω and 230Ω, respectively. The total brush contact drop is 2V and the core and friction losses are 380W. Calculate the efficiency of the motor. Assume that stray load loss is 1% of output. a. 78.6% b. 87.6% c. 96.4% d. 83.5% 46. A 15hp 220V shunt motor has an armature resistance of 0.07 ohm and a shunt resistance of 200ohms. The overall efficiency at rated output is 89%, what is the rotational loss? a. 688W b. 1383W c. 921W d. 242W 47. A 5hp, 230V shunt motor takes 18A when operating at full load. The shunt field resistance is 115ohms and the armature resistance is 0.25ohm. Calculate the starter resistance if the starting torque is limited to 1.5times the full load torque ( take a 3V brush drop). a. 13.94Ω b. 9.2Ω c. 9.46Ω d. 9.33Ω 48. A shunt motor with armature resistance of 0.12Ω and designed to operate at 115V, is taking 60A in armature current at full load. Determine the value of the external resistance to be inserted in the armature circuit so that the armature current shall not exceed twice its full load value at starting. a. 0.838ohm b. 0.883ohm c. 0.808ohm d. 0.788ohm 49. A 20hp, 240V shunt motor takes 72A when operating at full load. The shunt field resistance is 240ohms and the armature resistance is 0.22ohm. Calculate the starter resistance if the starting torque is limited to 1.5times the full load torque (take a 3V brush drop). a. 4Ω b. 2Ω c. 6Ω d. 1.8Ω 50. A dc series motor develops 180lb-ft of torque when the current is 30A. The load increases so that the motor current rises to 50A. The torque now is.. a. 500lbs-ft b. 300lbs-ft c. 64.8lbs-ft d. 108lbs-ft 51. A series motor, having an armature resistance of 0.1Ω and a field resistance of 0.15Ω, takes 48A at 230V and 720rpm. The total core and friction losses are 650W, neglecting stray load and brush contact losses, calculate output power at the shaft. a. 11.36hp b. 16.13hp c. 13.16hp d. 113.6hp 52. For a 4pole, 2 layer, dc lap winding with 20 slots and one conductor per layer, the number of commutator bar is. a. 80 b. 20 c. 40 d. 160 53. A 4 pole, lap wound dc armature, the back pitch is 17, if the winding is progressive what is the front pitch? a. 15 b. 13 d. 17 d. 16 54. In a 4 pole, 54 slot dc armature, calculate the coil span a. 18 b. 9 c. 14 d. 13 55. If the armature of an 8pole dc machine were wound with a simplex wave winding, How many parallel path would there ne? a. 16paths b. 2paths c. 8paths d. 4paths 56. In a 4 pole, 35 slot dc armature, calculate the coil span a. 8 slots b. 7 slots c. 10 slots d. 9 slots

57. A 4 pole, 12 slot lap wound dc armature has two coil side/slot. Assuming single turn coil, calculate the back pitch for progressive and retrogressive winding. a. 5 & 3 b. 3 & 5 c. 7 & 5 d. 6 & 4 58. In a 10 pole, lap wound dc armature, the number of active armature conductor per pole is 50. The number of compensating conductor per pole required is a. 5 b. 500 c. 50 d. 10 59. A 4 pole dc generator with simplex lap winding has 48 slots and four elements per slot. The flux per pole is 2.5x10^6 maxwells and it runs at 1500rpm. What is the output voltage? a. 60Volts b. 360Volts c. 225Volts d. 120Volts 60. A 4 pole dc generator with duplex lap winding has 48 slots and four elements per slot. The flux per pole is 2.5x10^6 maxwells and it runs at 1500rpm. What is the output voltage? a. 690V b. 480V c. 225V d. 120V 61. A separately excited generator generates 230V when driving at 1200rpm, if the flux is decrease by 10%, what is the new emf with speed remains the same. a. 230V b. 256V c. 207V d, 253V 62. The input current to a 220V, long shunt compound motor at no load is 6A. The shunt field circuit resistance is 220ohms, the armature resistance is 0.1ohm and series field resistance is 0.08ohm. What is the stray power loss? a. 1095.5W b. 1097.5W c. 1086.5W d. 1189.6W 63. A 20kW 220V shunt generator has an armature resistance of 0.07 ohm and a shunt resistance of 200ohms. Determine the power developed in the armature when it delivers its rated output. a. 27.9kW b. 20.83kW c. 19.2kW d. 25.7kW 64. The pulley of an old gen set has a diameter of 20 inches. The belt excert a pull of 353 lbs on the pulley. The gen set runs at 900rpm. What is the approximate kW rating of the gen set? a. 75 b. 250 c. 200 d.35 65.A 288V shunt generator has constant losses of 2880W. The armature circuit resistance is 0.20ohm and field resistance of 144 ohms. If the generator is delivering power at maximum efficiency, then its armature current is. a. 10A b. 120A c. 130A d. 64A 66. A 400kW, 600V, dc shunt generator has an armature resistance of 0.03ohm. The field resistance is 48ohms. The stray power loss for this machine at rated voltage and speed is 7200watts, What is the maximum efficiency? a. 93.4% b. 96.3% c. 95.3% d. 98.5% 67. A shunt generator delivers 195A of terminal of voltage 250V. The armature and shunt field resistances are 0.02ohm and 50ohms respectively. The iron and friction losses equal to 950watss. What is the overall efficiency? a. 94% b. 98% c. 96% d. 95% 68.A 440V long shunt generator has a full load current of 200A. Its armature resistance, series field resistance and shunt field resistances are 0.02ohm, 0.04ohm and 100ohms respectively, the stray load losses are 200W. What is the full load efficiency of generator? a. 97% b. 95% c. 98% d. 93% 69. A 25kW, 500V long shunt compound generator delivers a full load. It has armature, series field and shunt field resistances of 0.05Ω , 0.03Ω and 250Ω respectively. What is the generated voltage allowing 3V for brush contact drop? a. 496V b. 507V c. 503V d. 484V 70. A long shunt compound generator supplies 50kW at 230V. the total field and armature circuit resistances ar 46Ω and 0.03Ω, respectively. The brush contact drop is 2V. Determine the percent voltage regulation. Neglect the armature reaction. a. 3.97% b. 3.57% c. 2.9% d. 3.77% 71. A 100kw, 230V, shunt generator has Ra=0.05Ω and Rf=57.5Ω. If the generator operates at rated voltage, calculate the induced voltage at half full load. Neglect brush contact drop. a. 241V b. 230V c. 252V d. 238.2V 72. A 50kw, 250V, short shunt compound generator has the following data Ra=0.06Ω, Rse=0.04Ω and Rf=125Ω. Calculate the induced armature voltage at rated load and terminal voltage. Take 2V as the total brush contact drop. a. 270.12V b. 268.24V c. 272.12V d. 274.12V 73. A 50kW 460V shunt generator has a voltage regulation of 8.7 percent, Calculate the no load terminal voltage. a. 475 b. 500 c. 505 d. 490 74. Two shunt generators A and B, with ratings of 150kW and 100kW respectively having identical straight line voltage vs. percent kW output characteristic, are connected in parallel. The no load and full load voltage of 255 and 230V, calculate the kW output of each when the total load shared is 200kW. a. 110kW & 90kWb. 150kW & 50kW c. 120kW & 80kW d. 125kW & 75kW 75. Two shunt generators A and B, with ratings of 250 and 400kW respectively having equal no load voltage of 260V and full load voltage of 240V, calculate the load of each when the total load shared is 600kW. a. 231kW & 369kW b. 238kW & 362kW c. 242kW & 358kW d, 234kW & 366kW