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- Question
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
Options- A. The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction.
- B. The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in opposite direction.
- C. The bottom and middle roll rotate in the same direction.
- D. any one of the above
- Correct Answer
- The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in opposite direction.
- 1. The minimum size of a bloom is
Options- A. 5 cm x 5 cm
- B. 10 cm x 10 cm
- C. 15 cm x 15 cm
- D. 20 cm x 20 cm Discuss
- 2. The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
Options- A. shearing
- B. piercing
- C. punching
- D. blanking Discuss
- 3. 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
- 4. 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
- 5. The torch used for oxygen cutting is same as for oxy-acetylene welding.
Options- A. Yes
- B. No Discuss
- 6. In fore-hand welding, the weld is made
Options- A. from left to right
- B. from right to left
- C. first from left to right and then from right to left
- D. either from left to right or from right to left Discuss
- 7. Rotary swaging
Options- A. is extensively used for making bolts and rivets
- B. is used for reducing the diameters 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
- 8. The process extensively used for making bolts and nuts is
Options- A. hot piercing
- B. extrusion
- C. cold peening
- D. cold heading Discuss
- 9. To prevent the body of the blade from jamming in the saw cut, the teeth of blade are
Options- A. strengthened
- B. sharpened
- C. set
- D. all of these Discuss
- 10. In fore-hand welding, the angle between the welding rod and the work is kept as
Options- A. 30°-40°
- B. 40°-50°
- C. 50°-60°
- D. 60°-70° Discuss
Workshop Technology problems
Search Results
Correct Answer: 15 cm x 15 cm
Correct Answer: piercing
Correct Answer: Correct
Correct Answer: 50% sand and 50% clay
Correct Answer: No
Correct Answer: from right to left
Correct Answer: is used for reducing the diameters of round bars and tubes by rotating dies which open and close rapidly on the work
Correct Answer: cold heading
Correct Answer: set
Correct Answer: 30°-40°
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