Discussion
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- Question
In a four high rolling mill, the diameter of backing up rolls is __________ the diameter of working rolls.
Options- A. equal to
- B. smaller than
- C. larger than
- Correct Answer
- larger than
- 1. The dowels are
Options- A. wooden nails
- B. box nails
- C. wire nails
- D. none of these Discuss
- 2. For arc welding
Options- A. alternating current with high frequency is used
- B. alternating current with low frequency is used
- C. direct current is used
- D. any one of these Discuss
- 3. The welding process used to join the ends of two pipes of uniform cross-section, is
Options- A. spot welding
- B. seam welding
- C. projection welding
- D. upset butt welding Discuss
- 4. Which of the following statement is wrong?
Options- A. The hot chamber die casting machine is used for casting zinc, tin, lead and other low melting alloys.
- B. The cold chamber die casting machine is used for casting aluminium, magnesium, copper base alloys and other high melting alloys.
- C. The castings produced by centrifugal casting method have open and coarse grained structure.
- D. all of the above Discuss
- 5. The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as
Options- A. hot piercing
- B. extrusion
- C. cold peening
- D. cold heading Discuss
- 6. Fin is a casting defect which is due to thin projections of metal not intended as a part of casting.
Options- A. Correct
- B. Incorrect Discuss
- 7. Seam weiding is a
Options- A. continuous spot welding process
- B. multi-spot welding process
- C. arc welding process
- D. process used for joining round bars Discuss
- 8. For smoothing and cleaning out depressions in the mould, a __________ is used.
Options- A. slick
- B. lifter
- C. swab
- D. gagger Discuss
- 9. The algebraic difference between the maximum limit and the basic size is called
Options- A. actual deviation
- B. upper deviation
- C. lower deviation
- D. fundamental deviation Discuss
- 10. When the dimension is expressed as
, then the tolerance is
Options- A. 0.035 mm
- B. 0.025 mm
- C. 0.01 mm
- D. 0.06 mm Discuss
Workshop Technology problems
Search Results
Correct Answer: wooden nails
Correct Answer: direct current is used
Correct Answer: upset butt welding
Correct Answer: The castings produced by centrifugal casting method have open and coarse grained structure.
Correct Answer: cold peening
Correct Answer: Correct
Correct Answer: continuous spot welding process
Correct Answer: lifter
Correct Answer: upper deviation
Correct Answer: 0.06 mm
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