Quiz
Kingdom of Saudi Arabia
Ministry of Higher Education
Majmaah University
College of Engineering
-----------------------------------------------------------------------------------------------------------------------------Academic Year:- 1433-1434 / 2012-2013
Level:-5 CE
Subject:-Hydraulics-1
Time:- 45 Minutes
Term:- Even
Max. Marks:10 (2x5=10)
Subject Code:- 240 CE
Answer any FIVE questions:
Question-1
Write the dimensions (MLT form) of the following:
(i) Pressure
(ii) viscosity
(iii) Energy
(iv) Discharge
Question-2
Find the depression in mercury in a capillary tube 2mm diameter. Take surface
tension = 472 dyne/cm, angle of contact = 140 and specific gravity of Hg = 13.6?
Question-3
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-4
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-5
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-6
the following equation satisfy the relation between distance y from a smooth
boundary and the velocity v of oil viscosity 5 poise.
V = 40y – y2 (cm/sec)
Calculate the shear stress at y = 0 and 10 cm.