Write the types of cement?
2 answers:
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Answer:
Explanation:
Given:
Diameter of aluminum wire, D = 3mm
Temperature of aluminum wire,
Temperature of air,
Velocity of air flow
The film temperature is determined as:
from the table, properties of air at 1 atm pressure
At
Thermal conductivity, ; kinematic viscosity
; Prandtl number
The reynolds number for the flow is determined as:
sice the obtained reynolds number is less than , the flow is said to be laminar.
The nusselt number is determined from the relation given by:
The covective heat transfer coefficient is given by:
Rewrite and solve for
The rate of heat transfer from the wire to the air per meter length is determined from the equation is given by:
The rate of heat transfer from the wire to the air per meter length is
Answer:
The natural angular frequency of the rod is 53.56 rad/sec
Explanation:
Since the beam is free at one end and fixed at the other hence the beam is a cantilevered beam as shown in the attached figure
We know that when a unit force is placed at the end of a cantilever the displacement of the free end is given by
Hence we can write
Comparing with the standard spring equation we find the cantilever analogous to spring with
Now the angular frequency of a spring is given by
where
'm' is the mass of the load
Thus applying values we get
