Answer:
attached below
Explanation:
Cylindrical steel rod : diameter ( D ) , length L, uniform temperature T
Initial temp of water : To, heat transfer coefficient between steel rod surface and water : h1
<u>The energy balance equation can be written as :</u>
Rate of convectional heat loss = Rate of decrease in internal energy with respect to time
cp = heat capacity of body, v = volume , р = density of body
attached below is the heat transfer differential equation and boundary and initial conditions
The reactor, generator, and the cooling towers
Answer:
Listed Below
Explanation:
Weldability which is also known as joinability is defined as the ease with which a material can be welded without producing any other effect .
Some factors which affect weldability are
1.Melting point of metal
- Higher the melting point lower will be the weldability.
2.Thermal conductivity
- Materials with higher thermal conductivity are difficult to join.
3.Reactivity
- If the material reacts with surroundings like water or air, it is difficult to weld.
4.Coefficient of thermal expansion(α)
- Higher the thermal expansion lower will be the weldability.
5.Surface condition
- The material with dirty surface is difficult to weld for example if a surface has oxide layer on it it become difficult to weld it.
Answer:
The torque is the shear strees multiplied by radius. Radius = 50mm. We'll also have to convert mpa to Newton/mm^2. 1 mpa= 1 N/mm^2. Sowe are good to go. I. e we also have 60N/mm^2. Multiplying both gives 60 N/mm^2 * 50mm = 300N
Explanation: