Materials, Manufacturing and Industrial Engineering - Online Test
Q1. For a ductile material, toughness is a measure of
Answer : Option B
Explaination / Solution:
Explanations:-
Since, toughness has ability to absorb energy up to fracture
Since, toughness has ability to absorb energy up to fracture
Q2. The function of interpolator in a CNC machine controller is to
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. Holes of diameter 
mm are assembled interchangeably with the pins of diameter 
mm. The minimum clearance in the assembly will be
mm are assembled interchangeably with the pins of diameter mm. The minimum clearance in the assembly will be
Answer : Option B
Explaination / Solution:
Minimum clearance
minimu m hole - maxium shaft
= 25 + .020 - 25 + .005
= 0.015 mm
Q4. Match the following products with preferred manufacturing processes:
Product Process
P Rails (1)Blow
molding
Q Engine crankshaft (2) Extrusion
R Aluminium channels (3) Forging
S PET water bottles (4) Rolling
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. Which one of the following is the most conservative fatigue failure criterion?
Answer : Option A
Explaination / Solution:
No Explaination.
Q6. In a linear arc welding process, the heat input per unit length is inversely proportional to
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. The solidification time of a casting is proportional to (V/A)2, where V is the volume of the
casting and A is the total casting surface area losing heat. Two cubes of same material and
size are cast using sand casting process. The top face of one of the cubes is completely
insulated. The ratio of the solidification time for the cube with top face insulated to that of the
other cube is
Answer : Option B
Explaination / Solution:
Q8. In electrodischarge machining (EDM), if the thermal conductivity of tool is high
and the specific heat of work piece is low, then the tool wear rate and material
removal rate are expected to be respectively
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. In orthogonal turning of medium carbon steel, the specific machining energy
is 2.0 J/mm3. The cutting velocity, feed and depth of cut are 120 m/min,
0.2 mm/rev. and 2 mm respectively. The main cutting force in N is
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. A direct current welding machine with a linear power source characteristic provides open circuit voltage of 80 V and short circuit current of 800 A. During welding with the machine, the measured arc current is 500 A corresponding to an arc length of 5.0 mm and the measured arc current is 460 A corresponding to an arc length of 7.0 mm. The linear voltage (E) arc length (L) characteristic of the welding arc can be given as (where E is in volt and L in in mm)
Answer : Option A
Explaination / Solution:
No Explaination.
