Answer:
Explanation:
Normal strain :
It is the ratio of deformation to the original dimension.Normal strain occurs due to longitudinal force.
Normal strain = ΔL/L
Shear strain:
It is the ratio of deformation to perpendicular dimension.Shear strain occurs due to tangential force.
From the second diagram:
if angle Φ is small then we can write
So
This is the shear strain equation.
Answer: 255
255 turns are required to create 25 ohms of secondary impedance.
Explanation:
Given that,
Number of turns in primary wire N₁ = 900
impedance on Primary wire Z₁ = 400 ohms
Number of turns in Secondary wire N₂ = ?
impedance on Secondary wire Z₂ = 25 ohms
we know that, the relationship between turn and impedance is
Zp / Zs = ( Np / Ns )²
(Primary impedance / secondary impedance) = Number of turns in primary wire / Number of turns in secondary wire)²
there fore
Z₁ / Z₂ = ( N₁ / N₂ )²
Now we substitute
( 400 / 25 ) = ( 900 / N₂ )²
400 / 25 = 900² / N₂²
we cross multiple to get our N₂
400 × N₂² = 900² × 25
N₂² = ( 900² × 25 ) / 400
N₂² = ( 810000 × 25 ) / 400
N₂² = 20250000 / 400
N₂² = 50625
N₂ = √50625
N₂ = 225
Therefore 255 turns are required to create 25 ohms of secondary impedance.
Answer:
NRO- Maintain intelligence satellites for U.S.
OCS- Train enlisted personnel to become an officer
Air force- provide counterintelligence training
Navy- provide control system operation procedures
Answer:
A cost is something you have to give up or sacrifice and a benefit is something that is gained or is helpful.
Explanation:
In a cost-benefit analysis of a system, an engineer is to simply look at the requirements for the system and determine the costs to build the system, both in financial value and energy value. Additionally, the engineer needs to determine the benefits that would come from choosing a particular path of cost. If the benefits outweigh the cost for the project, then the solution is accepted. Else, the cost outweighs the benefit and the solution is rejected.