Lakshya Education MCQs

Question: For welding plates of thickness more than 12.5 mm, its edges
Options:
A. Do not require bevelling
B. Should be bevelled to a single-V or U-groove
C. Should have a double-V or U-groove on one side
D. Should have a double-V or U-groove on both sides
Answer: Option D
Explanation :

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More Questions on This Topic :

Question 1. A rip saw
  1.     Is a two man saw
  2.     Is used for cutting along the grains of wood
  3.     Has a narrow blade with two wooden handles
  4.     All of the above
Answer: Option B
Explanation :
Question 2. In welding magnesium with tig arc welding, direct current with ________ is used.
  1.     Straight polarity
  2.     Reversed polarity
  3.     Both (A) and (B)
  4.     None of these
Answer: Option B
Explanation :
Question 3. A jolt machine is used to
  1.     Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
  2.     Ram the sand harder at the back of the mould and softer on the pattern face
  3.     Produce uniform sand hardness throughout the mould
  4.     Produce uniform packing of sand in the mould
Answer: Option A
Explanation :
Question 4. When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.
  1.     Horizontal core
  2.     Vertical core
  3.     Drop core
  4.     Balanced core
Answer: Option C
Explanation :
Question 5. Thermit, used in thermit welding, is a mixture of
  1.     Charcoal and iron oxide
  2.     Charcoal and aluminium
  3.     Iron oxide and aluminium
  4.     Charcoal, iron oxide and aluminium
Answer: Option C
Explanation :
Question 6. In order to ram the sand harder at the back of the mould and softer on the pattern face, a ________ is used.
  1.     Sand slinger
  2.     Squeezing machine
  3.     Jolt machine
  4.     Stripper plate machine
Answer: Option B
Explanation :

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