Answer:
In refrigeration cycle heat transfer from inside refrigeration
In heat pump cycle heat transfer from environment
Explanation:
heat cycle is mechanical process use for cool the temperature but
In refrigeration heat transfer from inside of refrigeration that decrease temperature of refrigerator and in heat pump it decrease temperature negligible as compare to refrigerator
Answer:
The trunks were all cut at the same lenght, 9 Carolingian feet, easier to carry away and to build. The construction was built by a team of four people, using traditional tools such as a hand saw, clamp, gimlet, Catalan type axe, wood hammer, chisel, two-handed wood saw, heavy wood hammer and metal wedges.
Explanation:
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
Answer:
A) ΔL = 0.544 mm
B) Δd = -0.0168 mm
Explanation:
We are given;
Elastic modulus; E = 67.1 GPa = 67.1 × 10^(9) Pa
Force; F = 46400 N
Diameter; d = 17.8 mm = 17.8 × 10^(-3) m
Radius; r = d/2 = 17.8/2 = 8.9 mm = 8.9 × 10^(-3) m
Length; L = 196 mm = 0.196 m
Poisson ratio; ν = 0.34
A) We know that formula for elastic modulus is;
E = σ/ε
Where;
σ = F/A
ε = ΔL/L
Thus;
E = (FL/ΔL•A)
ΔL is change in length. Making it the subject of the formula, we have;
ΔL = FL/AE
Now, A = πr²
A = π × (8.9 × 10^(-3))²
ΔL = [(0.196 × 46400)/(π × (8.9 × 10^(-3))² × 67.1 × 10^(9)]
ΔL = 0.544 × 10^(-3) m
ΔL = 0.544 mm
B) formula for Poisson ratio is given as;
ν = -ε_x/ε_z
Where;
ε_x is transverse strain = Δd/d
ε_z is longitudinal strain = ΔL/L
Thus;
ν = -Δd•L/d•ΔL
Making Δd the subject, we have;
Δd = -νdΔL/L
Δd = -(0.34 × 17.8 × 10^(-3) × 0.544 × 10^(-3))/0.196
Δd = -0.0168 × 10^(-3) m = -0.0168 mm
Answer:
An equipment maintenance log is a document that records activities that have been performed on an asset. It takes at least a handful of key equipment to keep a plant operational. It is unimaginable how much time and effort goes into maintenance activities for each asset annually.
