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ESE 2022 ME - Technical Quiz 15
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Considering the variation of static pressure and absolute velocity in an impulse stream turbine, across one row of moving blades
When 3-2-1 principle in used to support and locate a three dimensional workpiece during machining, the number of degrees of freedom that are restricted is
At resonance, the amplitude of vibration is
An arc welding process is carried out with open circuit voltage 200 V and short circuit current of 1200 A. The power characteristics is linear and the voltage arc length relationship is given as V=48+4L(V in volt and L in mm).For the maximum power condition find the arc length in mm
A nail of mass 0.015 kg is driven into a fixed wooden block, Its initial speed is 25 m/s and it is brought to rest in 6ms. Find the impulse.
For a mechanism shown below, the mechanical advantage for the given configuration is
Find the friction angle , if the given rake angle is 10 ° and chip thickness ratio is 0.3. assume that it follows merchant's theory
For a laminar flow over a flat plate if free stream velocity of fluid is 10m/s. Boundary layer thickness near to wall is 10mm, determine wall shear stress. Take dynamic viscosity as 0.863 Poise. Velocity profile is given by
Estimate the factor of safety based on maximum principal strain theory for the following Principal stress states for hot-rolled steel has given, σ1 = 200 MPa, σ2 = 150 MPa, σ3 = 50 MPa and μ= 0.3 Yield strength of material= 300 MPa
In a machine shop certain type of machine breakdown at an average of 3 per hour in accurate with Poisson process. The estimated cost of Idle machine is Rs. 15/-per hour. Repairman taken 10 min on an average to repair a machine and his wages are Rs. 8 per hour. The work shift is 10 hours. Determine the total cost to the company due to machine breakdown.
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