Answer: (b)
Explanation:
Given
Original length of the rod is 
Strain experienced is 
Strain is the ratio of the change in length to the original length

Therefore, new length is given by (Considering the load is tensile in nature)

Thus, option (b) is correct.
Answer:
Explanation:
Given: Pressure of a fluid column ΔP=ρgΔh
Density of water (ρ) = 1000 kg/m^3
Acceleration of gravity (g) = 9.8 m/sec^2
Δh = difference in height / elevation of water tower and tap
= 50 - 10
= 40
Substitute back into equation:
Pressure = 1000*9.8*40
= 392000 N/m^2
The answer is D.
Answer:
Otherwise dies may fail under high operating pressure and temperature. ... The better description and understanding of the phase change processes can be ... occurs only when the temperature is dropped well below the equilibrium temperatures. ... The solidification starts at the bottom and the solidified volume grows more
Explanation:
Answer:
a) 0.35 W
b) 5.25 W
Explanation:
Given that
Width of the chip, W = 5 mm
The environment temperature, T(∞) = 15° C
Surface temperature, T(s) = 85° C
The initial convection heat coefficient, h1 = 200 W/m².K
The final convection heat coefficient, h2 = 3000 W/m².K
See attachment for solution