Answer: you should first know to know the kind of electricity you are going to deal with (weather AC, DC)
Explanation:
Answer:
Explanation:
Given data:
length of Steel bolt
Length of aluminium cylinder
Pitch of bolt p = 1mm
Modulus of elasticity of steel E = 215 GPa
Modulus of elasticity of aluminium = 74 GP
Area of bolt
Area of cylinder = 2300 mm^2
n =1
By equilibrium
By the compatibility
Displacement in steel is
Displacement in Aluminium is
from compatibility equation we have
substitute
Stress in Aluminium
Answer:
Mach number = 0.68168
The flow should be treated as compressible.
Explanation:
Given that:
The altitude of a commercial jet = 35000
The properties of air at that given altitude are as follows:
Pressure = 24.577 kPa
Temperature T = 50.78176° C
Temperature T = ( 50.78176 + 273 )K = 328.78176 K
The velocity is also given as: 550 mph = 245.872 m/s
Therefore, the sonic velocity is firstly determined by using the formula:
a = 360.68755 m/s
Then, we can calculate the Mach number by using the expression:
Mach number = 0.68168
b) Ideally, all flows are compressible because the Mach number is greater than 0.3, suppose the Mach number is lesser than 0.3, then it is incompressible.
Answer:
Plain Bearings and Rolling Element Bearings -
Explanation:
two different type of bearing are:
1) Plain Bearings - Plain bearings are the easiest form of bearings and consist of only the layer of the bearings without rolling components.
2)Rolling Element Bearings - Rolling element bearings use balls or rollers between two rings – allowing movement with little rotating and sliding friction. These type of bearings include bearings for balls and rollers.
You are going to die most likely from being electrocuted