Answer:
It will not experience fracture when it is exposed to a stress of 1030 MPa.
Explanation:
Given
Klc = 54.8 MPa √m
a = 0.5 mm = 0.5*10⁻³m
Y = 1.0
This problem asks us to determine whether or not the 4340 steel alloy specimen will fracture when exposed to a stress of 1030 MPa, given the values of <em>KIc</em>, <em>Y</em>, and the largest value of <em>a</em> in the material. This requires that we solve for <em>σc</em> from the following equation:
<em>σc = KIc / (Y*√(π*a))</em>
Thus
σc = 54.8 MPa √m / (1.0*√(π*0.5*10⁻³m))
⇒ σc = 1382.67 MPa > 1030 MPa
Therefore, the fracture will not occur because this specimen can handle a stress of 1382.67 MPa before experience fracture.
Answer:
(B) dimensions, tolerances, materials, and finishes of a component.
Explanation:
An engineering drawing :
An engineering drawing is a technical drawing which draws the actual component .
An engineering drawing shows
1. Materials
2.Dimensions
3.Tolerance
4.Finishes of a component
Engineering drawing does not shows any information about the cost of component.
So the option B is correct.
Answer:
Explanation:
Civil engineers have become experts in creating sustainable and environmentally friendly buildings and systems. Multiplied over many communities, the energy and emissions savings can make a real difference in the environment. Other life-improving functions can also make communities better places to live.Jul 19, 2017
Answer:50 , 20
Explanation:
Given
Diametrical Pitch
where T= no of teeths
D=diameter
module(m) of gears must be same
Let 
be the gears on two gears
Therefore Center distance is given by
thus
and Velocity ratio is given by
From 1 & 2 we get
