Mechanical Engineering Answers

a square plate of L=1m side attached to a torsionnal spring of stiffness 10Nm/rad. The mass of the plate is M=1Kg. Now the air flow is coming from the left at 10m/s. What is the eigenfrequency (Hz) of the oscillator?

In a Carnot cycle, the rejection of heat is?

An intermediate shaft of a gearbox, supporting two spur gears A and B and mounted between two bearings C1 and C2, is shown in the figure below. The pitch circle diameters of gears A and B are 500 and 250 mm respectively. The shaft is made of alloy steel 20MnCr5. (Sut = 620 and Syt = 480 N/mm2). The factors kb and kt of the ASME code are 2 and 1.5 respectively. The gears are keyed to the shaft. Determine the shaft diameter using the ASME code.

A system has the input- output relation given by
y=T{x}=x^2
Show that the system is non-linear?

A circular rod of diameter "d" is 25(mm) and length "L" 2(m) to be stretched outward, with a force "F" of 79(N), The stress(KPa)generated will be

Consider arterial blood viscosity µ = .0 025 poise. If the length of the artery is 1.5cm, radius 8*10^(-3) cm
P = P− P = 4×10^3dynes/cm^2 then find (i) maximum peak velocity of
blood and (ii) the shear stress at the wall.

using the equipartition of energy concept estimate the ideal gas Cp(not Cv) in units KB for the low temperature regime where no vibrational modes are activated(if you calculate Cp=42KB, enter 42 as your answer )

Question 3
A load, P is suspended with a truss system which is joined to walls via a pin at B and a short link CD as
shown in Figure Q3. Determine the force (in terms of P) in member AB. Also determine the force (in
terms of P) in the short link CD. State whether the member and the link are are in tension or
compression

A mechanical speed control system works on the basis of centrifugal force, which is related to angular velocity through the formula. F = mrω2 The following values are measured to determine ω: r = 20 ± 0.02 mm, m = 100 ± 0.5 g, and F = 500 ± 0.1% N. Find the rotational speed in rpm and its uncertainty.

A mechanical speed control system works on the basis of centrifugal force, which is related to angular velocity through the formula F = mrw2. The following values are measured to determine ω: r = 25 ± 0.02 mm. m = 120 ± 0.5 g. and F = 600 ± 0.2% N. Find the rotational speed in rpm and its uncertainty. All measured values have a confidence level of 95%