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Question 1 of 22
1. Question
In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate
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Incorrect

Question 2 of 22
2. Question
Match the following metal forming processes with their associated stresses in the workpiece. Metal forming process Type of stress
1. Coining P. Tensile
2. Wire Drawing Q. Shear
3. Blanking R. Tensile and compressive
4. Deep Drawing S. CompressiveCorrect
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Question 3 of 22
3. Question
During normalizing process of steel, the specimen is heated
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Question 4 of 22
4. Question
Oil flows through a 200 mm diameter horizontal cast iron pipe (friction factor, f = 0.0225) of length 500 m. The volumetric flow rate is 0.2 m3/s. The head loss (in m) due to friction is (assume g = 9.81 m/s2) (read m3 as meter cube)
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Question 5 of 22
5. Question
For an opaque surface, the absorptivity a , transmissivity b and reflectivity c are related by the equation:
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Question 6 of 22
6. Question
Steam enters an adiabatic turbine operating at steady state with an enthalpy of 3251.0 kJ/kg and leaves as a saturated mixture at 15 kPa with quality (dryness fraction) 0.9. The enthalpies of the saturated liquid and vapor at 15 kPa are hf = 225.94 kJ/kg and hg = 2598.3 kJ/kg respectively. The
mass flow rate of steam is 10 kg/s. Kinetic and potential energy changes are negligible. The power output of the turbine in MW isCorrect
Incorrect

Question 7 of 22
7. Question
The following are the data for two crossed helical gears used for speed reduction:
Gear I : Pitch circle diameter in the plane of rotation 80 mm and helix angle 30º
Gear II : Pitch circle diameter in the plane of rotation 120 mm and helix angle 22.5º
If the input speed is 1440 rpm, the output speed in rpm isCorrect
Incorrect

Question 8 of 22
8. Question
A thin walled spherical shell is subjected to an internal pressure. If the radius of the shell is increased by 1% and the thickness is reduced by 1%, with the internal pressure remaining the same, the percentage change in the circumferential (hoop) stress is
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Question 9 of 22
9. Question
The area enclosed between the straight line y = x and the parabola y = x*x in the xy plane is
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Question 10 of 22
10. Question
Consider the function f (x) = x in the interval 1<= x <=1. At the point x = 0, f(x) is
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Question 11 of 22
11. Question
Which one of the following is NOT a decision taken during the aggregate production planning stage?
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Question 12 of 22
12. Question
A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2 mm depth by a cutter of 10 mm diameter between points (0, 0) and (100, 100) on the XY plane (dimensions in mm). The feed rate used for milling is 50 mm/min. Milling time for the slot (in seconds) is
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Question 13 of 22
13. Question
A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to a height of 25 mm. The percentage change in diameter is
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Question 14 of 22
14. Question
Which one of the following configurations has the highest fin effectiveness?
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Question 15 of 22
15. Question
A n ideal gas of mass m and temperature T1 undergoes a reversible isothermal process from an initial pressure P1 to final pressure P2. The heat loss during the process is Q. The entropy change S of the gas is
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Question 16 of 22
16. Question
A circular solid disc of uniform thickness 20 mm, radius 200 mm and mass 20 kg, is used as a flywheel. If it rotates at 600 rpm, the kinetic energy of the flywheel, in Joules is
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Question 17 of 22
17. Question
A cantilever beam of length L is subjected to a moment M at the free end. The moment of inertia of the beam cross section about the neutral axis is I and the Young’s modulus is E. The magnitude of the maximum deflection is
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Question 18 of 22
18. Question
F or a long slender column of uniform cross section, the ratio of critical buckling load for the case with both ends clamped to the case with both ends hinged is
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Question 19 of 22
19. Question
A t x = 0, the function f(x) = x*x*x + 1 has
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Question 20 of 22
20. Question
Details pertaining to an orthogonal metal cutting process are given below.
Chip thickness ratio 0.4
Undeformed thickness 0.6 mm
Rake angle +10°
Cutting speed 2.5 m/s
Mean thickness of primary shear zone 25 microns
The shear strain rate in per sec during the process isCorrect
Incorrect

Question 21 of 22
21. Question
In a single pass drilling operation, a through hole of 15 mm diameter is to be drilled in a steel plate of 50 mm thickness. Drill spindle speed is 500 rpm, feed is 0.2 mm/rev and drill point angle is 118°. Assuming 2 mm clearance at approach and exit, the total drill time (in seconds) is
Correct
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Question 22 of 22
22. Question
An incompressible fluid flows over a flat plate with zero pressure gradient. The boundary layer thickness is 1 mm at a location where the Reynolds number is 1000. If the velocity of the fluid alone is increased by a factor of 4, then the boundary layer thickness at the same location, in mm will be
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