The velocity potential function is given by an expression \(\\phi =-\frac{xy^{3}}{3}-x^{2}+\frac{x^{3}y}{3}+y^{2}\). The velocity component in x-direction is
-
Solution
If a fluid flows through a capillary tube of lenght L and diameter D and the man flow rate and the pressure drop are measured, the viscosity of the fluid can be estimated from the
-
Solution
A reciprocating engine running at 60 rad/s, is supported on springs. The static deflection of spring is 2 mm. Take g= 10 m/s2 when engine runs, The frequency of vibrations of the system will be _______
-
Solution
Which one of the following drives is used for a constant velocity ratio,positive drive with large center distance between the driver and the driven shaft ?
-
Solution
For positive drive with large centre distance between the driver and driven shaft, chain drive is used fora constant velocity ratio.
If Pis the pitch of square thread, then the depth of thread d is given by
-
Solution
Depth of thread (d) = 0.5 P
where, P = Pitch of square thread
A full journal bearing having clearance to radiu ratio of 1/100, using a lubricant with µ = 28 × 10–3 supports the shaft journal running at N = 2400 rpm. If bearing pressure is 1.4 MPa, the Sommerfeld number is _______
-
Solution
Where does the maximum hoop stress in a thick cylinder under external pressure occur ?
-
Solution
Maximum hoop stress in thick cylinder with external pressure occurs at outer surface.
A steel specimen 150 mm2 in cross-section. stretche by 0.05 mm over a 50 mm gauge length under an axial load of 30 KN. If E= 200 GPa, then strain energy stored in the specimen will be
-
Solution
In a machining operation, chip thicknes ratio is 0.3 and back rake angle of tool is 10°. The value to shear strain will be ______
-
Solution
In Taylor’s tool life equations is VTn = constant. What is the value of n for ceramic tools ?
-
Solution
In Taylor’s tool life equation (VTn= C)
The value of (n) for ceramic tools ranges from 0.6 to 0.8