1
The extending the polymer chain by successive addition of monomers units is called
A)
Propagation
B)
Termination
C)
Both A and B
D)
None of these
Answer & Solution
Answer: Option
A
2
Dacron is an example of
A)
polyamides
B)
polypropene's
C)
polyacrylnitrfle
D)
polyesters
Answer & Solution
Answer: Option
D
3
If Reynolds number is greater than 1, then the
A)
Viscous force is larger than the inertia force
B)
inertia force is larger than the viscous force
C)
inertia force is larger than the surface tension force
D)
inertia force is larger than the gravitational force
Answer & Solution
Answer: Option
B
4
Which is the correct (degree) temperature range for spherodized carbide in low carbon steel
A)
750-950°C
B)
950-1150°C
C)
550-750°C
D)
None of these
Answer & Solution
Answer: Option
C
5
Which of the following torch angle used in the forehand welding process
A)
30 - 40
B)
40 - 50
C)
50 - 60
D)
None of these
Answer & Solution
Answer: Option
B
6
The Nusselt number depends only on the Rayleigh number (product of the Grashof and Prandtl numbers) in the limit of
A)
Low Grashof number and low Prandtl number
B)
Low Grashof number and high Prandtl number
C)
High Grashof number and low Prandtl number
D)
High Grashof number and high Prandtl number
Answer & Solution
Answer: Option
C
7
Which of the following has a greater impact on the longitudinal strength of reinforced composites
A)
Fiber orientation
B)
Fiber strength
C)
Fiber length
D)
Fiber diameter
Answer & Solution
Answer: Option
B
8
For ferrous drawing, the drawing speed of multiple die machine is
A)
5 m /sec
B)
10 m /sec
C)
20 m /sec
D)
30 m /sec
Answer & Solution
Answer: Option
B
9
For edge dislocation slip plane is
A)
parallel to burger vector
B)
perpendicular to burger vector
C)
at 45° to the burger vector
D)
none of these
Answer & Solution
Answer: Option
A
10
Match the items in
Group 1 with units/dimensions in
Group 2 .
Group 1 Group 2
P. Diffusivity
1. Lt-1
Q. Surface tension
2. L-2 t-1
R. Dislocation density
3. JL-2
S. Mass Transfer coefficient
4. J mol-1 .K-1
5. L-2
A)
P-3, Q-4, R-2, S-5
B)
P-5, Q-3, R-3, S-1
C)
P-3, Q-2, R-4, S-1
D)
P-2, Q-3, R-5, S-1
Answer & Solution
Answer: Option
D
