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Replace the phrase printed in bold to make it grammatically correct ?
"Even though many companies" are now penetrating rural India, it would help to give India a real chance of witnessing a double digit GDP growth.
Which one of the following represents open thermodynamic system?
What is the deformation or dynamic factor if sum of errors on meshing teeth of steel pinion and gear is 32 x 10-3 mm?
For steel and pinion gears tooth form factor (K) is 0.111 and modulus of elasticity for pinion and gear is 207 x 103 N/mm2.
Substituting these values in formula for deformation factor
C = K.e [(Ep x Eg ) / (Ep + Eg )]
C = 11500e
Therefore substituting value of e = 32 x 10-3, we get
C = 368 N/mm
A work piece of 150 cm length and 40 cm width is machined by planning operation with a feed of 0.3 mm/stroke. The machine tool executes 10 double strokes/min. The planning time (in min) for a single pass is
Feed per minute = 0.3 × 10 = 3 mm
Time taken = 400/3 = 133.33 min
The maximum interference in mm after assembly between a bush of size 30+0.06+0.03 and a shaft of size 30+0.04+0.02 is
A glass plate at is heated by passing hot air over it with a convection co-efficient of 18 K. If the temperature change over the thickness is not to exceed to avoid damage, the maximum allowable temperature of the air will be. (Thermal conductivity of the plate matrial is 1.9 W/mK.). Thickness of plate is 1 mm.
The heat flow by conduction = Heat flow by convection
The conduction heat flow is found using the allowable temperature drop over 1 mm thickness.
Ice kept in a wall insulated thermo-flask is an example of which system?
During a steady state gas metal are welding with direct current electrode positive,the welding current voltage and welding speed are 150 A, 30 V, 6 m/min. A metallic wire electrode of diameter 1.2 mm is being fed at a constant rate of 12m/min. The density , specific heat and melting temperature of the wire electrode are 7000 kg/m3 , 500 J/kg, 1530ºC. Assuming ambient to be 30º and neglect latent heat of melting, further consider that 2/3 of the total electrical power is available for melting. The melting efficiency of wire electrode [%] is:
= 39.58 %
For a steel cube shown in the figure, the net volume change after loading is found to be zero. The magnitude of s will be? (Given 0.5)
25- 80+ s = 0
s = 55MPa
In an assembly line for assembling toys, five workers are assigned tasks which take times of 10, 9, 7, 9 and 8 minutes. The balance delay (%) for the line is
Find the blanking force required to punch 10 mm diameter holes in a steel sheet of 3 mm thickness. Given shear strength of material = 400 MPa, penetration = 40% and shear provided on the punch = 2 mm.