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Under the action of constant force, a 2kg block moves such that its position x as a function of time is given by X=t^3/3 ,where x in meters and t in sec , the workdone by force in first 2 seconds isA 26.6 jB 3.3 jC 16 jD 32 jSolution) v=dx/dt=t^2,a=dv/dt=2t,f(t)=ma(t),w=∫f(t)*v(t) dt (from x=0 to x=2 sec)
what is the least count of following instrument? vernier caliper micrometer bevel protractor dial
matle cutting
TESTING OF RESISTANCE WELDS There are a number of destructive and non destructive tests available for testing the welds obtained by resistance welding. Radiographic or Ultrason
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Q. Find the dimension of strongest rectangular beam that can be cut out of log of 25 mm diameter. Sol .: b 2 + d 2 = 25 2 d 2 = 25 2 - b 2 As M/I = σ/y; M =
which type of guideways are used in centerless grinding machine? which are the errors find in different guideways?
is strain in bending important parameter to consider?
temparature stresses in composite bars
(a ) What are the demerits and merits of sliding mesh gear box? (b) Show a four speed gear box, including reverse speed for a passenger car and illustrate how the speed ratio is
A tensile test on a specimen having an initial diameter of 13.11 mm and an initial gauge length of 200.0 mm, gave the following data:
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