Engineering, 25.11.2019 22:31 poohbyar29
A5-in. diameter, gray cast iron cylindrical part is to be turned on a lathe at 500 rpm. the depth of cut is 0.25 in. and the feed is 0.02 in./rev. what power (hp) is required for this operation? assume that the energy requirement for machining cast irons is 2.0 hp. min/in3 . [hint: the power (hp) = energy per unit vol. multiplied by mrr].
Answers: 2
Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
Answers: 2
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:10
True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure
Answers: 2
A5-in. diameter, gray cast iron cylindrical part is to be turned on a lathe at 500 rpm. the depth of...
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