  # ISRO Scientist or Engineer Civil 2014

Instructions

For the following questions answer them individually

Question 21

# When Mach number is less than unity, the flow is called Question 22

# Coplanner concurrent force are those forces which Question 23

# The best hydraulic cross section for a open channelis the one Question 24

# There is a free overall fall at the end of a long channel. For a given flow rate, the critical depth is less than normal depth What gradually varied flow profile will occur in the channel for the flow rate? Question 25

# For an isotropic material, the relationship between Young’s Modulus(E), Shear Modulus(G), and Poission’s ratio $$(\mu)$$ is given by Question 26

# A standard measure of ductility of a material is Question 27

# A rod of length L= 500 mm and cross sectional area A = 60 $$mm^{2}$$ is made of an elasto plastic material having a modular of elasticity E = 200 Gpa nits elastic range and yield point $$\sigma y$$=300 Mpa. The rod is subjected to an axial load until it is stretched 7 mm and the load is then removed. What is the resulting permanent set? Question 28

# The changein the volumeper Unit volume occurs when normalstresses are applied on an element of isotropic materialis called as Question 29

# Determinethe change in volumeofa steel block of size $$80mm \times 40mm \times 60mm$$ when it is subjected to the hydrostatic pressure P = 180 Mpa. Use E = 200 Gpa and v = 0.29 Question 30

# Whisper concrete is used OR