Answer:
B because as a textile engineer, your job is to help design and create fabric, including the equipment and materials needed for fabrication.
Answer:
correct option is b) 1333.3 cm²
Explanation:
given data
power P = 1.5 W∕cm²
j = 3 A∕cm²
electrical power = 2 kW
solution
as given 1.5 W∕cm² power mean 1.5 W power operated by 1 cm²
so here 2 kW i.e here 2000 W power is operated in
2000 W power is operated = ![\frac{2000W*1cm^2}{1.5W}](https://tex.z-dn.net/?f=%5Cfrac%7B2000W%2A1cm%5E2%7D%7B1.5W%7D)
= 1333.33 cm²
so correct option is b) 1333.3 cm²
Answer:
a) Hydroplaning
Explanation:
When a wall of water separates the tire on a vehicle from the roadway then the condition is known as hydroplaning or aquaplaning. Skidding of the vehicle is a possibility that may arise due to hydroplaning. However hydroplaning may not immediately result in vehicle stopping abruptly. So among the given options, Hydroplaning fits the scenario specified in the question.
Answer:
a) ∝ and β
The phase compositions are :
C
= 5wt% Sn - 95 wt% Pb
C
= 98 wt% Sn - 2wt% Pb
b)
The phase is; ∝
The phase compositions is; 82 wt% Sn - 91.8 wt% Pb
Explanation:
a) 15 wt% Sn - 85 wt% Pb at 100⁰C.
The phases are ; ∝ and β
The phase compositions are :
C
= 5wt% Sn - 95 wt% Pb
C
= 98 wt% Sn - 2wt% Pb
b) 1.25 kg of Sn and 14 kg Pb at 200⁰C
The phase is ; ∝
The phase compositions is; 82 wt% Sn - 91.8 wt% Pb
Csn = 1.25 * 100 / 1.25 + 14 = 8.2 wt%
Cpb = 14 * 100 / 1.25 + 14 = 91.8 wt%
Answer:
Maximum shear stress is;
τ_max = 1427.12 psi
Explanation:
We are given;
Power = 2 HP = 2 × 746 Watts = 1492 W
Angular speed;ω = 450 rev/min = 450 × 2π/60 rad/s = 47.124 rad/s
Diameter;d = 1 in
We know that; power = shear stress × angular speed
So,
P = τω
τ = P/ω
τ = 1492/47.124
τ = 31.66 N.m
Converting this to lb.in, we have;
τ = 280.2146 lb.in
Maximum shear stress is given by the formula;
τ_max = (τ•d/2)/J
J is polar moment of inertia given by the formula; J = πd⁴/32
So,
τ_max = (τ•d/2)/(πd⁴/32)
This reduces to;
τ_max = (16τ)/(πd³)
Plugging in values;
τ_max = (16 × 280.2146)/((π×1³)
τ_max = 1427.12 psi