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- Question 1 of 21
In a mixture of dry air and water vapor at a total pressure of 750 mm of Hg, the partial pressure of water vapor is 20 mm of Hg. The humidity ratio of the air in grams of water vapor per kg of dry air (gw/kgda) isCorrectIncorrect
- Question 2 of 21
In a sheet metal of 2 mm thickness a hole of 10 mm diameter needs to be punched. The yield strength in tension of the sheet material is 100 MPa and its ultimate shear strength is 80 MPa. The force required to punch the hole (in kN) isCorrectIncorrect
- Question 3 of 21
In a single point turning operation with cemented carbide tool and steel work piece, it is found that the Taylor’s exponent is 0.25. If the cutting speed is reduced by 50% then the tool life changes by ______ timesCorrectIncorrect
- Question 4 of 21
The demand for a two-wheeler was 900 units and 1030 units in April 2015 and May 2015, respectively. The forecast for the month of April 2015 was 850 units. Considering a smoothing constant of 0.6, the forecast for the month of June 2015 isCorrectIncorrect
- Question 5 of 21
The Blasius equation related to boundary layer theory isCorrectIncorrect
- Question 6 of 21
For flow of viscous fluid over a flat plate if the fluid temperature is the same as the plate temperature the internal boundary layer isCorrectIncorrect
- Question 7 of 21
At least one eigenvalue of a singular matrix isCorrectIncorrect
- Question 8 of 21
At x = 0 the function f(x) = |x| hasCorrectIncorrect
- Question 9 of 21
A small ball of mass 1kg moving with a velocity of 12m/s undergoes a direct central impact with a stationary ball of mass 2kg.The impact is perfectly elastic.The speed (in m/s) of 2kg mass ball after the impact will beCorrectIncorrect
- Question 10 of 21
A rod is subjected to a uniaxial load within linear elastic limit.When the change in the stress is 200MPa the change in the strain is .001.If the Poisson ratio of the rod is .3 the modulus of rigidity (in Gpa) isCorrectIncorrect
- Question 11 of 21
A gas is stored in a cylindrical tank of inner radius 7m and wall thickess 50mm.The gage pressure of the gas is 2MPa.The maximum shear stress (in Mpa) in the wall isCorrectIncorrect
- Question 12 of 21
The uniaxial yield stress of a material is 300 Mpa.According to Von Mises criterion the shear yield stress (in Mpa) of the material isCorrectIncorrect
- Question 13 of 21
Which of the following statements regarding a Rankine cycle with reheating are true?
i.increase in average temperature of heat addition
ii.reduction in thermal efficiency
iii.drier steam at the turbine exitCorrectIncorrect
- Question 14 of 21
With in a boundary layer for a steady incompressible flow the Bernoulli equationCorrectIncorrect
- Question 15 of 21
The COP of a Carnot heat pump operating between 6 degree C and 37 degree C isCorrectIncorrect
- Question 16 of 21
The atomic packing factor for a material with body centered cubic structure isCorrectIncorrect
- Question 17 of 21
The primary mechanism of material removal in electrochemical machining (ECM) isCorrectIncorrect
- Question 18 of 21
Which one of the following statements is true?CorrectIncorrect
- Question 19 of 21
During the development of a product an entirely new process plan is made based on design logic examination of geometry and tolerance information.This type of process planning is known asCorrectIncorrect
- Question 20 of 21
In a machining operation if the generatrix and directrix both are straight lines the surface obtained isCorrectIncorrect
- Question 21 of 21
In full mould cavity less casting process the pattern is made ofCorrectIncorrect