Questions
41
The metal patterns as compared to wooden patterns require less
Answer: Draft allowance
42
According to Indian standards, the total numbers of tolerance grades are
Answer: 18
44
Lancing is the operation of
Answer: Cutting a sheet of metal through part of its length and then bending the cut portion
45
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
Answer: Permanent mould casting method
46
The welding process used in joining mild steel shanks to high speed drills, is
Answer: Flash butt welding
47
Which one of the following material will require the largest size of riser for the same size of casting?
Answer: Steel
50
The teeth of hacksaw blade are bent
Answer: Alternately towards right and left and every third or fourth left straight
51
Structural sections such as rails, angles, I-beams are made by
Answer: Hot rolling
53
When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.
Answer: Carburising
54
The process of decreasing the cross-section of a bar and increasing its length, is called
Answer: Drawing down
55
Cutting and forming operations can be performed in a single operation in a
Answer: Combination die
56
In a cold chamber die casting machine
Answer: Melting pot is separate from the machine
57
Seam welding is best adopted for metal thickness ranging from
Answer: 0.025 to 3 mm
58
In order to check the clearance between two mating surfaces, a ________ gauge should be used.
Answer: Feeler
59
The hot working of metals is carried out
Answer: Above the recrystallisation temperature
