Answer:
work done= 2.12 kJ
Explanation:
Given
N=2500 rpm
T=4.5 N.m
Period ,t= 30 s
P=
P=70,685W
P=70.685 KW
power=
work done = power * time
= 70.685*30=2120.55J
= 2.12 kJ
If the density of states function in the conduction band of a particular semiconductor is a constant equal to K, derive the expr
ession for the thermal-equilibrium concentration of electrons in the conduction band, assuming Fermi-Dirac statistics and assuming the Boltzmann approximation is valid.
1 answer:
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Answer:21.3%
Explanation:
Given
80 % reduction in tool life
According to Taylor's tool life
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where V is cutting velocity
T=tool life of tool
80 % tool life reduction i.e. New tool Life is 0.2T
Thus
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Thus a change of 21.3 %(increment) is required to reduce tool life by 80%