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The answer is one of the options below please solve carefully and circle the correct option Please write clear .

The answer is one of the options below please solve carefully and circle the correct option Please write clear .

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Specimen A is tested using Rockwell C scale showed a value of HRC 45 while Specimen B when tested using Rockwell A scale showed a value of HRA 71.5, which of the following statements is true? HARDENED STEEL AND HARD ALLOYS Tensile Micro- Vickers Knoop Brinel Strength ficial Rockwelr Superficial CAD G 15-N 30-N 45-N HV HK HB KSI WMN Roundness Correction 150 100 kg kg 16 Brale Brale Brale ball 3000 kg 10 mm bal 634 615 595 150 60 kg kg 500 gm and 15 kg 30 kg 45 kg "N NN Brale Brale Brale 89.8 76.6 65.5 89.3 75.7 64.3 88.9 74.8 63.2 88.3 73.9 62.0 87.9 73.0 60.9 87.4 72.0 598 86.9 71.2 58.6 86.4 70.2 57.4 85.9 69.4 56.1 85.5 68.5 55.0 85.0 67.6 53.8 84.5 66.7 52.5 83.9 65.8 51.4 83.5 64.8 50.3 83.0 64.0 49.0 82.5 63.1 478 82.0 62.2 46.7 81.5 61.3 45.5 80.9 60.4 44.3 80.4 59.5 43.1 79.9 58.6 41.9 1000 Ibs/ 1000 sq in 10 kg Diameter of Specimen - inches (mm) gm over 59 80.7 69.9 58 80.1 69.2 57 79.6 68.5 56 79.0 67.7 674 653 633 613 595 577 710 690 670 351 338 325 909 904 900 7/8 Observed Reading (3.2) (6.4) (10) (13) 1-1/4 1-1/2 (32) (38) 1/8 1/4 3/8 3/4 1/2 5/8 (16) (19) (22) (25) 577 560 543 525 512 496 650 630 612 594 576 558 542 526 510 313 301 292 283 273 264 255 246 238 229 221 215 208 201 194 90 85 80 0.5 0.5 0.5 896 891 887 NA 0.5 0.5 0.5 0.5 78.5 66.9 54 78.0 66.1 0.5 0.5 53 77.4 65.4 560 544 528 883 879 874 870 865 861 75 70 65 1.0 1.0 1.5 0.5 1.0 1.0 0.5 0.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 76.8 64.6 51 76.3 63.8 50 75.9 63.1 49 75.2 62.1 48 74.7 61.4 47 74.1 60.8 46 73.6 60.0 45 73.1 59.2 44 72.5 58.5 43 72.0 57.7 42 71.5 56.9 70.9 56.2 513 498 484 481 469 455 60 55 50 1.5 2.0 2.5 1.0 1.5 2.0 1.0 1.0 1.5 0.5 1.0 1.0 0.5 0.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 443 432 421 409 400 390 381 371 362 471 458 446 856 851 847 495 480 466 452 438 426 0.5 45 40 35 3.0 3.5 4.0 2.0 2.5 3.0 1.5 2.0 2.0 1.0 1.5 1.5 1.0 1.0 1.5 1.0 1.0 1.0 0.5 1.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 842 837 832 827 822 817 434 423 412 188 182 177 41 5.0 5.5 6.0 1.0 1.0 1.0 0.5 1.0 1.0 402 392 382 414 402 391 3.5 30 25 20 4.0 4.5 2.5 3.0 3.5 2.0 2.5 2.5 1.5 2.0 2.0 1.5 1.5 1.5 1.0 1.0 1.5 40 70.4 55.4 69.9 54.6 39 A. Both A and B have the same hardness B. B is harder than A C.A is harder than B D. There is no way to compare hardness values
Transcribed Image Text:Specimen A is tested using Rockwell C scale showed a value of HRC 45 while Specimen B when tested using Rockwell A scale showed a value of HRA 71.5, which of the following statements is true? HARDENED STEEL AND HARD ALLOYS Tensile Micro- Vickers Knoop Brinel Strength ficial Rockwelr Superficial CAD G 15-N 30-N 45-N HV HK HB KSI WMN Roundness Correction 150 100 kg kg 16 Brale Brale Brale ball 3000 kg 10 mm bal 634 615 595 150 60 kg kg 500 gm and 15 kg 30 kg 45 kg "N NN Brale Brale Brale 89.8 76.6 65.5 89.3 75.7 64.3 88.9 74.8 63.2 88.3 73.9 62.0 87.9 73.0 60.9 87.4 72.0 598 86.9 71.2 58.6 86.4 70.2 57.4 85.9 69.4 56.1 85.5 68.5 55.0 85.0 67.6 53.8 84.5 66.7 52.5 83.9 65.8 51.4 83.5 64.8 50.3 83.0 64.0 49.0 82.5 63.1 478 82.0 62.2 46.7 81.5 61.3 45.5 80.9 60.4 44.3 80.4 59.5 43.1 79.9 58.6 41.9 1000 Ibs/ 1000 sq in 10 kg Diameter of Specimen - inches (mm) gm over 59 80.7 69.9 58 80.1 69.2 57 79.6 68.5 56 79.0 67.7 674 653 633 613 595 577 710 690 670 351 338 325 909 904 900 7/8 Observed Reading (3.2) (6.4) (10) (13) 1-1/4 1-1/2 (32) (38) 1/8 1/4 3/8 3/4 1/2 5/8 (16) (19) (22) (25) 577 560 543 525 512 496 650 630 612 594 576 558 542 526 510 313 301 292 283 273 264 255 246 238 229 221 215 208 201 194 90 85 80 0.5 0.5 0.5 896 891 887 NA 0.5 0.5 0.5 0.5 78.5 66.9 54 78.0 66.1 0.5 0.5 53 77.4 65.4 560 544 528 883 879 874 870 865 861 75 70 65 1.0 1.0 1.5 0.5 1.0 1.0 0.5 0.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 76.8 64.6 51 76.3 63.8 50 75.9 63.1 49 75.2 62.1 48 74.7 61.4 47 74.1 60.8 46 73.6 60.0 45 73.1 59.2 44 72.5 58.5 43 72.0 57.7 42 71.5 56.9 70.9 56.2 513 498 484 481 469 455 60 55 50 1.5 2.0 2.5 1.0 1.5 2.0 1.0 1.0 1.5 0.5 1.0 1.0 0.5 0.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 443 432 421 409 400 390 381 371 362 471 458 446 856 851 847 495 480 466 452 438 426 0.5 45 40 35 3.0 3.5 4.0 2.0 2.5 3.0 1.5 2.0 2.0 1.0 1.5 1.5 1.0 1.0 1.5 1.0 1.0 1.0 0.5 1.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 842 837 832 827 822 817 434 423 412 188 182 177 41 5.0 5.5 6.0 1.0 1.0 1.0 0.5 1.0 1.0 402 392 382 414 402 391 3.5 30 25 20 4.0 4.5 2.5 3.0 3.5 2.0 2.5 2.5 1.5 2.0 2.0 1.5 1.5 1.5 1.0 1.0 1.5 40 70.4 55.4 69.9 54.6 39 A. Both A and B have the same hardness B. B is harder than A C.A is harder than B D. There is no way to compare hardness values
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