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Engineering
Design a TDM system to handle 3 PAM channels if the maximum input frequency of each channel is 5 kHz.
Engineering
When measuring length, why is it important to use the correct tools and units to attain the greatest accuracy? Use specific examples from the lab to support your answer.
Engineering
A Man of mass 80 kg dives into a swimming pool from a tower of height 18 m. He was found to go down in water by 2.2 m and then started rising. Find the average resistance of water. Neglect the air resistance of water take value of, g =9.81m/s2
Engineering
Testing and evaluating a(n) _______ is an important step to the engineering design process
Engineering
The axle of a heavy duty tractor 120 K W at 600 rpm it acts as a cantilever supporting a load of 280 N located 60 cm from the fixed end. The allowable normal stress Is 137 MPa and the allowable shear stress is 62 MPa. If the axial load is negligible, find the axle diameter. A:52 mm B:50 mm C:56 mm D:54 mm
Engineering
Find the minimum value of w=2r+10s+8t, subject to the following constraints.
r+s+t≥6
s+2t≥8
-r+2s+2t≥4
r,s,t≥0
r+s+t≥6
s+2t≥8
-r+2s+2t≥4
r,s,t≥0
Engineering
0.05 kg of steam at 15 bar is contained in a rigid vessel of volume 0.0076m3 what is the temperature of the steam?if the vessel is cooled until the pressure in the vessel is 11 bar calculate the dryness fraction of the steam and the total heat rejected?
Engineering
How the degree of polynomial in continuous path is estimated with its acceleration and velocity
Engineering
Doubly-ionized lithium is hydrogen-like atom. Atomic ionization energy can be predicted by an analysis using electrostatic potential and the Bohr model of the atom. For this model ionization energy will be:
E= −(Z2 13.6[eV])/n2
where Z - nuclei charge. n - principal quantum number.
So, for Li2+ (Z=3) energy diagram will be something like this:
n=1. E1=-122.4 eV
n=2. E2=-30.6 eV
n=3. E3=-13.6 eV
….....................................
n = infinity E = 0 (vacuum level)
When n=1, corresponded E = 122.4 eV – this is ionization energy for ground state.
why the answer is not E= -122.4eV instead it is E= 122.4eV?
E= −(Z2 13.6[eV])/n2
where Z - nuclei charge. n - principal quantum number.
So, for Li2+ (Z=3) energy diagram will be something like this:
n=1. E1=-122.4 eV
n=2. E2=-30.6 eV
n=3. E3=-13.6 eV
….....................................
n = infinity E = 0 (vacuum level)
When n=1, corresponded E = 122.4 eV – this is ionization energy for ground state.
why the answer is not E= -122.4eV instead it is E= 122.4eV?
Engineering
Solve A steel rail is 15m long and is laid at temperature of 25c. The maximum temperature expected is 45c
1. Estimate the minimum gag between two rails to be left so that temperature stresses do not develop.
2. Calculate the thermal stress develop in the rail if no expansion joint is provided.
3. Calculate the thermal stress developed in the rail if a 2.5mm gap is provided.
1. Estimate the minimum gag between two rails to be left so that temperature stresses do not develop.
2. Calculate the thermal stress develop in the rail if no expansion joint is provided.
3. Calculate the thermal stress developed in the rail if a 2.5mm gap is provided.
