Download Quiz 11 for Machine Tool Technology | ENTC 2200 and more Quizzes Engineering in PDF only on Docsity! Score ________/20 Name _______________________________ Section _________ ENTC 2200 Machine Tool Tech.— QUIZ # 11: Nontraditional Prcs Directions: Circle or completely mark through the letter of the one most correct alternative. 1. The purpose for the fluid used for Electric Discharge Machining (EDM) is: a) Dielectric b) Coolant c) Lubricant d) Electrolyte 2. EDM is ideal for machining delicate workpieces because: a) It requires only low-order operator skills and hence labor is readily available. b) Little heat is generated. c) No tool pressure is generated. d) No clamping devices are required. 3. A disadvantage of EDM is that: a) It leaves a thin hardened layer on high carbon steel workpieces. b) It works only on ferrous materials. c) Workpiece materials must be pre-heat-treated. d) Smooth surface finishes are very difficult to achieve. 4. The two types of EDM machines are: a) Solid-electrode and hollow-electrode. b) Metallic electrode and ceramic electrode. c) Solid-electrode and traveling-wire. d) Circular electrode (for high frequency) and rectangular electrode (for low frequency). 5. The EDM electrode material widely used because it is inexpensive, easily machined, and has an excellent wear ratio is: a) Brass b) Graphite c) Copper d) Tungsten 6. Electrochemical machining (ECM) is essentially the reverse process of: a) EDM b) Milling c) Electroplating d) Welding Revised: Nov. 6, 2004 ENTC 2200 QUIZ # 11 Name ________________________________________ 7. The purpose for the fluid used for electrochemical machining is: a) Dielectric. b) Coolant. c) Lubricant. d) Electrolyte. 8. Which of the following is NOT one of the advantages of chemical milling? a) It does not cold work the metal. b) Very large parts can be machined. c) Complex surfaces are difficult to machine. d) Large numbers of workpiece surfaces can be simultaneously machined. 9. Ultrasonic machining operates at frequencies of: a) 6000 to 12,000 Hz. b) 13,000 to 18,000 Hz. c) 19,000 to 25,000 Hz. d) 26,000 to 50,000 Hz. 10. Electron Beam Machining (EBM) can normally produce holes as small as ______ in any material. a) 0.005". b) 0.0005". c) 0.00005". d) 0.000005". End of Quiz Staple all pages together in upper left hand corner and submit by due date. Revised: Nov. 6, 2004
