Materials, Manufacturing and Industrial Engineering - Online Test
Q1. The maximum possible draft in cold rolling of sheet increases with the
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. The operation in which oil is permeated into the pores of a powder metallurgy
product is known as
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. Green sand mould indicates that
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. The word kanban is most appropriately associated with
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. The coefficient of restitution of a perfectly plastic impact is
Answer : Option A
Explaination / Solution:
Coefficient of Re stitution = Relative velocity of separation/Relative velocity of approach
= O for perfectly plastic impact
since both bodies clinge together after impact.
Q6. Which one among the following welding processes uses non-consumable
electrode?
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. The crystal structure of austenite is
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. Match the following non-traditional machining processes with the corresponding
material removal mechanisms :
Machining process Mechanism of material removal
P. Chemical machining 1. Erosion
Q. Electro-chemical machining 2. Corrosive reaction
R. Electro – discharge machining 3. Ion displacement
S. Ultrasonic machining 4. Fusion and vaporization
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. A cubic casting of 50mm side undergoes volumetric solidification shrinkage and
volumetric solid contraction of 4% and 6% respectively. No. riser is used.
Assume uniform cooling in all directions. The side of the cube after solidification
and contraction is
Answer : Option A
Explaination / Solution:
Volumetric solidification shrinkage and volumetric solid contraction cause
decrease in dimensions.
Volume of cube = 503 = 125000 mm3
After considering both the allowances
V = 125000 × 0.96 × 0.94 = 112800mm3
Q10. The variable cost (V) of manufacturing a product varies according to the equation
V= 4q, where q is the quantity produced. The fixed cost (F) of production of same
product reduces with q according to the equation F = 100/q. How many units
should be produced to minimize the total cost (V+F)?
Answer : Option A
Explaination / Solution:
Checking with all options in formula: (4q+100/q) i.e. (V+F). Option A gives the
minimum cost.
