FE Civil Review – Materials Exam UPDATED QUESTIONS AND CORRECT ANSWERS

FE Civil Review – Materials Exam UPDATED QUESTIONS AND CORRECT ANSWERS What describes martensite? I. High ductility II. Formed by quenching austenite III. High hardness (A) I only (B) I And II (C) I and III (D) II and III - CORRECT ANSWER What is the hardest form of steel (A) pearlite (B) ferrite (C) bainite (D) martensite - CORRECT ANSWER (D) II and III (D) martensite A mixture of ice and water is held at a constant temperature of 0 deg Celcuis. How many degrees of freedom does the mixture have? (A) -1 (B) 0 (C) 1 (D) 2 - CORRECT ANSWER (B) 0 What term is used for the ratio of stress to strain below the proportional limit? (A) modulus of rigidity (B) Hooke's constant (C) Poisson's ratio (D) Young's modulus - CORRECT ANSWER What kind of test might result from this diagram? (Stress -Strain Diagram) (A) resilience test (B) rotating beam test (C) ductility test (D) tensile test - CORRECT ANSWER What does an impact test measure? (A) hardness (B) yield strength (C) toughness (D) creep strength - CORRECT ANSWER A stress strain diagram is shown. (D) Young's modulus (D)