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# ISRO ME Quiz-18

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Question 1

Steady one-dimensional heat conduction takes place across the faces 1 and 3 of a composite slab consisting of slabs A and B in perfect contact as shown in the figure, where k

*, k*_{A}*denote the respective thermal conductivities. Using the data as given in the figure, the interface temperature T*_{B}_{2}(in^{o}C. is ____Question 2

A solid steel shaft transmits 50 KW of power at the frequency of (50/ π)Hz. The initial torque needed in the shaft is ______.

Question 3

A shell of 100 mm diameter and 100 mm height with the corner radius of 0.4 mm is to be produced by cup drawing. The required blank diameter is

Question 4

A double-pipe counter-flow heat exchanger transfers heat between two water streams. Tube side water at 19 liter/s is heated from 10 °C to 38 °C. Shell side water at 25 liter/s is entering at 46 °C. Assume constant properties of water; density is 1000

*kg/m*^{3}and specific heat is 4186 J/kg.K. The LMTD (in °C) is __________Question 5

A carbide tool (having

*n*= 0.25) with a mild steel workpiece was found to give life of 1 hour 21 minutes while cutting at 60*m*/min. The value of*C*in Taylor’s tool life equation*VT*=^{n}*C*would be equal to :Question 6

For two springs having same stiffness (k) are in series, the equivalent stiffness would be __________.

Question 7

If the fluid velocity for a potential flow is given by V(x,y) = u(x,y)i+ v(x,y)j with usual notations, then the slope of the potential line at (x. y) as

Question 8

Find the differential equation whose solution represents the family .

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