Discussion
Home ‣ Mechanical Engineering ‣ Workshop Technology Comments
- Question
The most preferred process for casting gas turbine blades is
Options- A. die casting
- B. shell moulding
- C. investment moulding
- D. sand casting
- Correct Answer
- shell moulding
- 1. In a cold chamber die casting machine
Options- A. melting pot is separate from the machine
- B. melting pot is an integral part of the machine
- C. melting pot may have any location
- D. low temperature and pressure is used Discuss
- 2. The metal is subjected to mechanical working for
Options- A. refining grain size
- B. reducing original block into desired shape
- C. controlling the direction of flow lines
- D. all of these Discuss
- 3. For gas welding, the presure desired at the welding torch for acetylene is
Options- A. 7 to 103 kN/m2
- B. 70 to 280 kN/m2
- C. 280 to 560 kN/m2
- D. 560 to 840 kN/m2 Discuss
- 4. Structural sections such as rails, angles, I-beams are made by
Options- A. hot rolling
- B. hot drawing
- C. hot piercing
- D. hot extrusion Discuss
- 5. Thermit welding is often used in
Options- A. replacing broken gear teeth
- B. repairing broken shears
- C. joining rails, truck frames and locomotive frames etc.
- D. all of the above Discuss
- 6. A sand employed on the faces of the pattern before moulding, is called
Options- A. green sand
- B. dry sand
- C. loam sand
- D. parting sand Discuss
- 7. A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
Options- A. shift
- B. sand wash
- C. swell
- D. scab Discuss
- 8. The torch used for oxygen cutting is same as for oxy-acetylene welding.
Options- A. Yes
- B. No Discuss
- 9. Loam sand is a mixture of
Options- A. 30% sand and 70% clay
- B. 50% sand and 50% clay
- C. 70% sand and 30% clay
- D. 90% sand and 10% clay Discuss
- 10. In a cold chamber die casting machine, a measured quantity of molten metal is brought in a ladle from the melting pot to a chamber and forced into the closed die-section by applying hydraulic pressure upon the plunger.
Options- A. Correct
- B. Incorrect Discuss
Workshop Technology problems
Search Results
Correct Answer: melting pot is separate from the machine
Correct Answer: all of these
Correct Answer: 7 to 103 kN/m2
Correct Answer: hot rolling
Correct Answer: all of the above
Correct Answer: parting sand
Correct Answer: sand wash
Correct Answer: No
Correct Answer: 50% sand and 50% clay
Correct Answer: Correct
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.