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29 questions from the welding symbols and blueprints practice test.
10 questions, graded as you go, with the reason for every answer. No sign-up.
A part length is dimensioned 24 in. ± 1/8 in. What is the longest acceptable part, in decimal inches?
Answer in in.
24.125 in
Upper limit = nominal + plus tolerance = 24 + 1/8 = 24 1/8 in. = 24.125 in.
Reference: ASME Y14.5, Dimensioning and Tolerancing: limits of size
A dimension reads 15 3/4 in. with a tolerance of +1/16 in. / -1/8 in. What is the shortest acceptable length, in decimal inches?
Answer in in.
15.625 in
Lower limit = nominal - minus tolerance = 15 3/4 - 1/8 = 15 5/8 in. = 15.625 in.
Reference: ASME Y14.5, Dimensioning and Tolerancing: limits of size
A plan is drawn at a scale of 1/4 in. = 1 ft-0 in. A wall line measures 3 1/2 in. on the plan. What length does it represent?
Answer in ft.
14 ft
Each 1/4 in. on paper is 1 ft. 3.5 / 0.25 = 14, so the line represents 14 ft.
Reference: Blueprint reading: drawing scales