Mechanical Engineering Gate 2016 Set-1 Questions with Answer

Ques 40 GATE 2016 SET-1

The non-traditional machining process that essentially requires vacuum is

Ques 41 GATE 2016 SET-1

In an orthogonal cutting process the tool used has rake angle of zero degree. The measured cutting force and thrust force are 500 N and 250 N, respectively. The coefficient of friction between the tool and the chip is ________.

Ques 42 GATE 2016 SET-1

Heat is removed from a molten metal of mass 2 kg at a constant rate of 10 kW till it is completely solidified. The cooling curve is shown in the figure. Assuming uniform temperature throughout the volume of the metal during solidification, the latent heat of fusion of the metal (in kJ/kg) is ________.

Ques 43 GATE 2016 SET-1

The tool life equation for HSS tool is VT^0.14f^0.7d^0.4 = Constant. The tool life (T) of 30 min is obtained using the following cutting conditions: V = 45 m/min, f = 0.35 mm, d = 2.0 mm. If speed (V), feed (f) and depth of cut (d) are increased individually by 25%, the tool life (in min) is

Ques 44 GATE 2016 SET-1

A cylindrical job with diameter of 200 mm and height of 100 mm is to be cast using modulus method of riser design. Assume that the bottom surface of cylindrical riser does not contribute as cooling surface. If the diameter of the riser is equal to its height, then the height of the riser (in mm) is

Ques 45 GATE 2016 SET-1

A 300 mm thick slab is being cold rolled using roll of 600 mm diameter. If the coefficient of friction is 0.08, the maximum possible reduction (in mm) is ________.

Ques 46 GATE 2016 SET-1

The "Jominy test" is used to find

Ques 47 GATE 2016 SET-1

A hypothetical engineering stress-strain curve shown in the figure has three straight lines PQ, QR, RS with coordinates P(0,0), Q(0.2, 100), R(0.6, 140) and S(0.8, 130). 'Q' is the yield point, 'R' is the UTS point and 'S' the fracture point.

Ques 48 GATE 2016 SET-1

Match the following:

Ques 49 GATE 2016 SET-1

Maximize Z = 15X₁ + 20X₂
subject to
12X₁ + 4X₂ ≥ 36
12X₁ - 6X₂ ≤ 24
X₁, X₂ ≥ 0
The above linear programming problem has

Ques 50 GATE 2016 SET-1

The cross sections of two hollow bars made of the same material are concentric circles as shown in the figure. It is given that r₃ > r₁ and r₄ > r₂, and that the areas of the cross-sections are the same. J₁ and J₂ are the torsional rigidities of the bars on the left and right, respectively. The ratio J₂/J₁ is

Ques 51 GATE 2016 SET-1

A cantilever beam having square cross-section of side a is subjected to an end load. If a is increased by 19%, the tip deflection decreases approximately by

Ques 52 GATE 2016 SET-1

A horizontal bar with a constant cross-section is subjected to loading as shown in the figure. The Young's moduli for the sections AB and BC are 3E and E, respectively. For the deflection at C to be zero, the ratio P/F is ________.