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Total Questions : 936 | Page 46 of 94 pages
Question 451.


For welding plates of thickness less than 5 mm, its edges


  1.    do not require bevelling
  2.    should be bevelled to a single-V or U-groove
  3.    should have a double-V or U-groove on one side
  4.    should have a double-V or U-groove on both sides
 Discuss Question
Answer: Option A. -> do not require bevelling


Question 452.


An oxidising process used for aluminium and magnesium articles is called


  1.    galvanising
  2.    anodising
  3.    parkerising
  4.    sheradising
 Discuss Question
Answer: Option B. -> anodising


Question 453.


An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.



  1.    True.
  2.    False
 Discuss Question
Answer: Option B. -> False


Question 454.

 
The shrinkage allowance for cast iron pattern is


  1.    10 mm/m
  2.    16 mm/m
  3.    20 mm/m
  4.    26 mm/m
 Discuss Question
Answer: Option A. -> 10 mm/m


Question 455.
A neutral flame is obtained by supplying
  1.    equal volumes of oxygen and acetylene
  2.    more volume of oxygen and less volume of acetylene
  3.    more volume of acetylene and less volume of oxygen
  4.    none of the above
 Discuss Question
Answer: Option A. -> equal volumes of oxygen and acetylene


Question 456.

 
Notching is the operation of


  1.    cutting a sheet of metal in a straight line along the length
  2.    removal of metal to the desired shape from the edge of a plate
  3.    cutting a sheet of metal through part of its length and then bending the cut portion
  4.    bending a sheet of metal along a curved axis
 Discuss Question
Answer: Option B. -> removal of metal to the desired shape from the edge of a plate


Question 457.
The cold working of metals is carried out
  1.    at the recrystallisation temperature
  2.    below the recrystallisation temperature
  3.    above the recrystallisation temperature
  4.    at any temperature
 Discuss Question
Answer: Option B. -> below the recrystallisation temperature


Question 458.

In bending operation, the metal takes the shape of a punch.


  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes


Question 459.

Lancing is the operation of


  1.    cutting a sheet of metal in a straight line along the length
  2.    removal of metal to the desired shape from the edge of a plate
  3.    cutting a sheet of metal through part of its length and then bending the cut portion
  4.    bending a sheet of metal along a curved axis
 Discuss Question
Answer: Option C. -> cutting a sheet of metal through part of its length and then bending the cut portion


Question 460.
.A pouring basin acts as a reservoir for the molten metal.
  1.    Agree
  2.    Disagree
 Discuss Question
Answer: Option A. -> Agree


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