Discussion
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- Question
A casting defect which occurs due to improper venting of sand is known as
Options- A. cold shuts
- B. blow holes
- C. shift
- D. swell
- Correct Answer
- blow holes
- 1. A hacksaw blade is specified by its
Options- A. length
- B. material
- C. width
- D. number of teeth Discuss
- 2. In arc welding, the temperature of heat produced by the electric arc is of the order of
Options- A. 3000° C to 4000° C
- B. 4000° C to 5000° C
- C. 5000° C to 6000° C
- D. 6000° C to 7000° C Discuss
- 3. The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.
Options- A. Correct
- B. Incorrect Discuss
- 4. In blanking operation, the clearance is provided on
Options- A. punch
- B. die
- C. half on the punch and half on the die
- D. either on punch or die depending upon designer's choice Discuss
- 5. The temperature produced by oxy-hydrogen flame is about
Options- A. 1800° C
- B. 2100° C
- C. 2400° C
- D. 3200° C Discuss
- 6. When the dimension is expressed as
, then the basic size is
Options- A. 20 mm
- B. 20.035 mm
- C. 20.025 mm
- D. 19.975 mm Discuss
- 7. The process of increasing the cross-section of a bar at the expense of its length, is called
Options- A. drawing down
- B. upsetting
- C. spinning
- D. peening Discuss
- 8. Extrusion
Options- A. is extensively used for making bolts and nuts
- B. is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work
- C. is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
- D. consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part Discuss
- 9. Sand wash is a casting defect which
Options- A. results in a mismatching of the top and bottom parts of a casting
- B. results in general enlargement of the casting
- C. occurs near the ingates as rough lumps on the surface of a casting
- D. occurs as sand patches on the upper surface of a casting Discuss
- 10. The metal extrusion process is generally used for producing
Options- A. uniform solid sections
- B. uniform hollow sections
- C. uniform solid and hollow sections
- D. varying solid and hollow sections Discuss
Workshop Technology problems
Search Results
Correct Answer: length
Correct Answer: 6000° C to 7000° C
Correct Answer: Correct
Correct Answer: punch
Correct Answer: 2400° C
Correct Answer: 20 mm
Correct Answer: upsetting
Correct Answer: consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
Correct Answer: occurs near the ingates as rough lumps on the surface of a casting
Correct Answer: uniform solid and hollow sections
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