171. A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
shift
sand wash
swell
scab
✅ The correct answer is option B.
Workshop Technology MCQs
172. Slick is used for repairing and finishing the mould.
Correct
Incorrect
✅ The correct answer is option A.
173. A ring gauge is used to
check the diameter of shafts or studs
test the accuracy of holes
check the clearance between two mating surfaces
all of the above
✅ The correct answer is option A.
174. In a gas welding of mild steel using an oxy-acetylene flame, the total amount of acetylene consumed is 10 litre. The oxygen consumption from the cylinder is
5 litre
10 litre
15 litre
20 litre
✅ The correct answer is option B.
175. Lancing is the operation of
cutting a sheet of metal in a straight line along the length
removal of metal to the desired shape from the edge of a plate
cutting a sheet of metal through part of its length and then bending the cut portion
bending a sheet of met
✅ The correct answer is option C.
176. The cold chisels are made from
cast iron
mild steel
high speed steel
cast tool steel
✅ The correct answer is option D.
177. In piercing operation, the clearance is provided on
punch
die
half on the punch and half on the die
either on punch or die
✅ The correct answer is option B.
178. For welding plates of thickness more than 12.5 mm, its edges
do not require bevelling
should be bevelled to a single-V or U-groove
should have a double-V or U-groove on one side
should have a double-V
✅ The correct answer is option D.
179. Acetylene gas is stored in cylinders in
solid form
gaseous form
liquid form
any one of these
✅ The correct answer is option C.
180. Cast iron and steel pipes are produced by
slush casting
investment casting
true centrifugal casting
die casting
✅ The correct answer is option C.