Kingdom of Saudi Arabia
Ministry of Higher Education
Majmaah University
College of Engineering
Quiz
--------------------------------------------------------------------------------------------------------------------------Academic Year:- 1434-1435 / 2013-2014
Level:-5 CEE
Subject:-Hydraulics-1
Time:- 45 Minutes
Question-1
Term:- Odd
Max. Marks:10
Subject Code:- 240 CE
At an altitude of 11000m, the atmospheric temperature is -56.6 °C and the pressure is 22.4 kN/m2
assuming the temperature remains the same at higher altitude, calculate the pressure at an altitude of 15000m. take
R = 287 J/kg. °K
Question-2
Determine the bulk modulus of elasticity of a fluid that has a volume decrease of 0.005% for a
pressure increase of 55.65 KN/m2?
Question-3
Calculate the diameter of section 3 under the following condition:
Section 1 inlet water flow rate 0.2 m3/sec
Section 2 diameter 30 cm and velocity 1.5 m/s
Section 3 velocity 2 m/s
2
1
3
Question-4
As shown in figure water flows through pipe A and B. The pressure
difference of these two points is to be measured by multiple tube manometers. Oil with
specific gravity 0.88 is in the upper portion of inverted U-tube and mercury in the bottom of
both bends. Determine the pressure difference. Given data: Specific gravity of the oil in the
inverted tube 0.88 , Specific gravity of Mercury in the U-tube13.6
Given data: Specific gravity of the oil in the inverted tube 0.88
Specific gravity of Mercury in the U-tube13.6
Calculate the Pressure difference between each two point as follow
P2 -P1 = h  g = h S w g
Start from one and i.e. PA or P B .
Rearranging and summing all these equations we have PA - PB = 103.28 w g
Answer: - 10.131 kPa