SET- A 11. The ratio of the dynamic viscosity of the fluid to its mass density.

1. If the specific volume of a certain gas is 0.5638 cubic meter per kilogram, what a. Surface Tension b. Ceramics VIiscosity
is its specific weight? c. Specific Gravity d. Kinematic Viscosity
a. 17.39 N/m³ b. 20.57 N/m³ 12. Water is discharge through a nozzle having velocity of 60 m/s at a point 240m
c. 17.38 N/m³ d. 18.02N/m³ below the reservoir. What is the total head loss?
2. What is the specific gravity of a solid sphere that has a radius of 15mm and a a. 60.42 m b. 50.32 m
mass of 0.038kg? c. 56.51 m d. 65.43 m
a. 2.687 b. 5.7x10-3 13. A 1 kg of hydrogen is confined in a volume of 200L at -4°C. What is the
c. 2.157 d. 3.123 pressure if R is 4.115 kJ/kg·K?
3. Water is flowing in a pipe of varying cross-sectional area, and all points the a. 4.691x106 Pa b. 3.314x10³ Pa
water completely fills the pipe. The cross-sectional area at point A is 0.08 c. 5.264 MPa d. 5.246 MPa
square meter, and the velocity is 3.5 meter per second. Compute the fluid’s 14. It deals with the application of fluid mechanics to engineering devices involving
velocity at point B where the cross-sectional area is 0.06 square meter. liquids, usually water oils.
a. 4.67 m/s b. 2.75 m/s a. hydrodynamics b. ideal fluids
c. 5.22 m/s d. 3.25 m/s c. Hydraulics d. fluid mechanics
4. A barrel contains a 0.150 m layer of oil floating on a water that is 0.30 m deep. 15. It is the name given to the behavior of the liquid in thin bore tube.
If the density of the oil is 600 kilogram per cubic meter, what is the pressure a. Surface Tension b. Cohesion
(gage) at the oil-water interface? c. Adhesion d. Capillarity
a. 883 Pa b. 900 Pa 16. If the specific volume of a certain gas is 0.5638 cubic meter per kilogram, what
c. 742 Pa d. 924 Pa is its specific weight?
5. A leak from a faucet comes out in separate drops. Which of the following is the a. 17.39 N/m³ b. 20.57 N/m³
main cause of this phenomenon?
c. 17.38 N/m³ d. 18.02N/m³
a. Gravity b. viscosity of fluid
c. Air resistance d. surface tension 17. What is referred to as a friction within a fluid that prevents the fluid from flowing
6. The property of a fluid which determines the amount of resistance to shearing freely?
force. a. Fluidity b. Viscosity
a. Viscosity b. Specific weight c. Adhesion d. Gradient
c. Specific gravity d. density 18. The jet discharges water at the rate of 0.10 m³/s at a speed of 18 m/s to
7. It expresses the compressibility of the fluid. stationary plate. Determine the force on the plate
a. Viscosity b. Compressibility a. 2800 N b. 2000 N
c. Bulk Modulus of Elasticity d. Surface Tension c. 1800 N d. 2500 N
8. It is the value of one reading minus the average of readings. 19. Find the mass density of helium at a temperature of 4°C and a pressure of 203
a. Precision error b. Accuracy Error kPa gage, if atmospheric pressure is 101.92 kPa. (R= 1933 J/kg. °K)
c. Significant digits d. Significant error a. 0.683 kg/m³ b. 0.583 kg/m³
9. If the specific volume of a certain gas is 0.7848 m 3 /kg , what is its specific c. 0.5614 kg/m³ d. 0.5694 kg/m³
weight? 20. A 3kg plastic tank that has a volume of 0.2m³ is filled with liquid water.
a. 12.5 N b. 14.5 N Assuming the density of water is 1000kg/m³, determine the weight of the
c. 16.5 N d. 1.27 N combined system.
10. It is the value of one reading minus true value. a. 1990N b. 187N
a. Precision error b. Accuracy Error c. 1431N d. 1971N
c. Significant digits d. Significant error
SET- B
1. Defined as mass per unit volume.
a. Density b. Specific gravity
c. Specific volume d. Specific weight 11. Under which condition, the specific weight of water is 1000 kg/m^3?
2. Defined as weight per volume a. at normal pressure of 760mm b. at mean sea level
a. Density b. Specific gravity c. at 4 degree Celsius temperature d. All of these
c. Specific volume d. Specific weight 12. An irregular shaped weighs 300N in air and 230N in water. What is the volume
−5 of the object in m3.
3. Water having kinematic viscosity of v=1.4 x 10 m/s ² flows in 200 mm
diameter pipe at velocity of 2.5 m/s. What is the Reynold number? a. 0.00724m3 b. 0.00821 m³
a. 4.765 b. 5.876 c. 0.88641 m³ d. 0.56845 m³
c. 3.571 d. 2.756 13. For partially submerged objects to be stable, where does the metacenter be
4. Liquids and gases take the following characteristic(s) of their contents. located?
a. Neither shape nor volume b. Shape a. To the right of the center of gravity b. Above center of gravity
c. Shape & Volume d. Volume c. To the left of the center of gravity d. Below the center of gravity
5. Jennifer is conducting an experiment that uses cooling water from a garden 14. If air has a constant specific weight of 12.2 N /m 3 and were incompressible,
hose. In order to calculate the volume flow rate of water through the hose, she what would be the height of the atmosphere if the atmospheric pressure (sea

1.1 gal in time period 𝚫t= 45.62 s, as measured with a stopwatch. Calculate
times how long it takes to fill a container. The volume of water collected is V= level) is 102 kPa?
a. 2,361 m b. 3,642.5 m
the volume flow rate of water through the hose in units of cubic meters per c. 8,360.7 m d. 422 m
minute. 15. A hydrometer scale for measuring the relative density (specific gravity) of
a. 5.5x10-3m3/s b. 6.1x10-3m3/s liquids.
c. 1.4x10-3m3/s d. 4.9x10-3m3/s a. Beckman scale b. Beaufort scale
6. Which of the following statements about a Newtonian fluid is most accurate? c. Baume scale d. Buckley scale
a. Shear stress is proportional to rate of strain b. Viscosity is Zero 16. Water is flowing in an open channel at a depth of 2m and a velocity of 3 m/s. It
c. Shear stress is proportional to strain d.Shear stress is multi- valued then flows down a chute into another channel where the depth is 1 m and the
7. What is the specific gravity of a solid sphere that has a radius of 5m and a velocity is 10 m/s. Assuming frictionless flow, determine the difference in
mass of 5kg? elevation of the channel floors.
a. 95x10−6 b. 94x10−6 a. 3.64m b. 34. 3m
c. 23.54m d. 4.23m
c. 93x10−6 d. 92x10−6
17. It refers to the fractional change in the volume of a fluid per unit change in
8. A gas flows through a square conduit, at the entrance the conduit sides are 0.1
pressure in a constant temperature process. Which one?
m², the velocity is 7.55 m/s, and the gas mass density is 1.09 kg/m³. At the exit,
a. Proportional limit b. Compressibility
the conduit sides are 0.25 m, and the velocity of the flow is 2.02 m/s. Find the
c. Bulk Modulus d. Capillarity
density of the gas at the exit section considering that the gas is compressible
18. A horizontal pipe of diameter 200 mm has the rate of flow of 500 L/s. Find the
a. 1.63 kg/m³ b. 0.6518 kg/m³
velocity of the pipe and the head lost at the end of the pipe.
c. 0.6851 kg/m³ d. 0.6185 kg/m
a. 16 m/s, 13.259 m b. 14 m/s, 8. 484 m
9. The jet discharges water at the rate of 0.10 m³/s at a speed of 18 m/s to
c.17 m/s, 14.367 m d. 16 m/s, 13.487 m
stationary plate. Determine the force on the plate
19. A manometer connected to a pipe indicates a negative gauge pressure of
a. 2800 N b. 2000 N
50mm of mercury. What is the absolute pressure in the pipe in Newtons per
c. 1800 N d. 2500 N
square meter is the atmospheric pressure is 1 bar?
10. A reservoir supplies fresh water through a pipe to a 83m below the reservoir.
a. 91.2 kN/m² b.93.3 kN/m²
Calculate the pressure in the town (assuming the water is static)
c. 89. 2 kN/m³ d. 87.4 kN/m³
a.8000000 kPa b. 831 kPa
20. The mass of air in a room which is 5mmx3mmx20mm is known to be 350 kg.
c. 813 kPa d. 713 kPa
Find the density
a. 1.167kg/m³ b. 1.778kg/m³
c. 1.568kg/m³ d. 2.998kg/m³
SET- C
1. Which of the following is TRUE about fluid?
a. It has a very regular molecular structure b. It is a liquid only 11. Calculate the discharge through a pipe of diameter 200 mm when the
c. It cannot sustain a shear force at rest d. It can strain difference of pressure head between the two ends of a pipe 500m apart is 4m
of water. Take the value of f= 0.009 in the formula Darcy Weisbach.
2. Defined as force per unit area and is determined by dividing the force by the
a. 6.424 m b. 5.767m
area upon which it acts.
c. 5.12 m d. 7.290m
a. Stress b. Normal Stress
12. What is the specific weight of air at a temperature of 30˚C and a pressure of
c. Shear Stress d. Work 470kPa abs?
3. The pressure 50 meters below the ocean is nearest to a. 0.0529 kN/m³ b. 0.0632 kN/m³
a. 476.988kPa b. 634.569kPa b. 0.0235 kN/m³ c. 0.0539 kN/m³
c. 505.215kPa d. 432.876kPa 13. A 5-kg rock is thrown upward with the force of 150N at a local gravitational
4. The weight density of a mud is given by w=35+0.3h where w is in kN / m³and h acceleration is 9.79 m/s². Determine the acceleration of the rock in m/s².
is in meters. Determine the pressure in kPa at a depth of 10m. a. 25.3 m/s² b. 20.2 m/s²
a. 875kPa b. 380kPa c. 19.31 m/s² c. 18.78 m/s²
c. 333kPa d. 359kPa 14. A barrel contains 0.150m layer of oil floating on water that is 0.30 mm deep. If
5. What is the rate of flow of water passing through a pipe with a diameter of the density of the oil is 600 kg/m³, what is the pressure gage at the oil-water
20mm and speed of 0.5 m/sec interface?
a. 1.57x10−4m²/s b. 98.99x10−4m²/s a. 623.8 N/m² b. 828.9 N/m²
c. 87.654x10−4 m²/s d. 765.098x10−4m³/s² c. 882.9 N/m² d. 762.8 N/m²
15. Viscosity for a fluid is define as the constant of proportionality between shear
6. The tank initially contains air at atmospheric conditions. The tank is connected stress and what other variable?
to a supply line, and air is allowed to enter the tank until the density rises to a a. The spatial derivative of velocity b.The time derivative of pressure
specified level. The mass of air that entered the tank is to be determined. c. The spatial derivative of density c.The time derivative of density
a. 6.02kg b. 7.3kg 16. Find the mass flow rate in kg/s of a liquid ( ρ=0.69 g /cm3 ¿ flowing through a
c. 5kg d. 5.26kg 5 cm (inside diameter) pipe at 8.3 m/s
7. An orifice has a coefficient discharge of 0.62 and a coefficient contraction of a. 16.2 kg/s b. 13.24 kg/s
0.63 determine the coefficient velocity for the orifice? c. 12.78 kg/s d. 11.24 kg/s
a. 0.98 b. 0.99 17. Determine the atmospheric pressure at a location where the barometric reading
c. 0.97 d. 0.96 is 740 mm Hg, and the gravitational acceleration is g = 9.81 m/s+. Assume the
8. Water having kinematic viscosity v= 1.3x10 -6m2/s flows in a 100-mm diameter temperature of mercury to be 10°C, at which its density is 13,570 kg/m 3
pipe at a velocity of 4.5m/ s. The Reynolds number is. a. 27 kPa b. 86 kPa
c. 24 kPa d. 98.5 kPa
a. 295,325 b. 289, 478
18. On a stationary floating object, the buoyant force acts upward through the
c. 658,054 d. 346,154 centroid of the displaced volume. What do you call this centroid?
9. Which of the following is an absolute property of fluid? a. Center of buoyancy b. Center of pressure
a. density b. Specific weight c. Center of mass d. Center of volume
c. specific gravity d. weight density 19. The following are the basic cmponents of a fluid element in motion. Which one
10. What do you call the pressure which the fluid exerts on an immersed object is NOT included?
container walls? a. Translation b. Twist
a. Normal pressure b. Hydrostatic pressure c. Rotation d. Volume distortion
c. Standard liquid pressure d. Gage pressure 20. Which of the following is dominating cause of viscosities of liquids?
a. Molecular cohesion b. Molecular randomness
c. Molecular adhesion d. Molecular spacing
 kg
density of air is ρ=1.029 3 , how much force must the roof supports be able
m
SET- D to withstand?
1. Any equation that relate the pressure, temperature, and density of a substance. a. 1.8 x 106 N b. 1.5 x 106 N
a. Bernoulli Equation b. Equation of State c. 1.2 x 106 N d. 1.6 x 10 6 N
c. Euler's number d. Avogadro's number
2. Fluids for which the rate of deformation is proportional to the shear stress.
a. Newtonian fluid b. Semifluid
c. Plasma d. Glycerin
3. Calculate the mass flow rate of a given fluid whose density is 700 kg/ m 3, 11. Which of the following describes Reynolds Number?
velocity, and area of cross-section is 40 m/s and 30 cm 2respectively a. Inertial forces/Viscous forces b. Buoyant forces/ Inertial forces
a. 8,400 kg/s b. 9,522 kg/s c. Drag forces/ Buoyant forces d. Viscous forces/ Drag forces
c. 6,542 kg/s d. 3,521 kg/s 12. Oil at 80°F (ρ=56.8 lbm/ft³ and μ=0.0278 lbm/ft·s) is flowing steadily in a 0.5-in-
4. Compute the flow rate of fluid if it is moving with the velocity of 20 m/s through diameter, 120-ft-long pipe during the flow, the pressure at the pipe inlet and exit
a tube diameter 0.03 m. is measured to be 120 psi and 14 psi, respectively. Determine the flow rate of
a. 0.01657 m³/s b. 0.014139 m³/s oil through the pipe assuming the pipe is horizontal
c. 0.016584 m³/s d. 0.054781 m³/s a. 0.00311m³/s b. 0.0451m³/s
5. Which of the following refers to the measure of fluid’s sensitivity to changes in c. 0.00234m³/s. d. 0.762 m³/s
viscosity with changes in temperature? 13. What is the reciprocal of absolute viscosity?
a. Viscosity index b. Coefficient of viscosity a. Viscosity gradient b. Fluidity
c. Viscosity ratio d. Viscosity factor c. Compressibility d. Viscosity Index
6. Water travels through a hose at 0.8 meters per second. If the cross-sectional 14. Find the mass density of helium at a temperature of 4°C and a pressure of 203
area of the exit nozzle is one-fifth that of the hose, at what speed does water kPa gage, if atmospheric pressure is 101.92 kPa. (R= 2079 J/kg. °K)
exit the hose? a. 0.4965 kg/m³ b. 0.583 kg/m³
a. 5.0m/s b. 4.0m/s c. 0.5694 kg/m³ d. 0.5694 kg/m³
c. 3.0m/s d.3.5m/s 15. A vacuum gage connected to a chamber reads 24 kPa at a location where the
7. You are watching leaves float past you in a stream that is 0.76 meters wide. At atmospheric pressure is 92 kPa. Determine the absolute pressure in the
one point, you estimate that the speed of the leaves triples. If the stream has a chamber .
constant depth, what is the width of the stream at this point? a. 78kPa b. 76kPa
a. 0.23 m b. 5.6 m c. 68 kPa d. 86 kPa
c. 4.2 m c. 0.25 m 16. A tank has an h1= 3m and a h3= 4m. Determine the value of h2 when h2 has
8. If the water that exits a pipe fills a pool that is 3 meters deep, 20 meters long, s=0.84.
and 5 meters wide in 3 days, what is the flow rate? a. 1.19m b.1.56m
a. 1.2x10−3 m³/s b. 1.4x10−3 m³/s c. 1.17m d. 1.45m
17. A vena contracta in a fluid jet issuing through a hoe in a plate is located
c. 1.1x10−3 m³/s c. 1.3x10−3 m³/s approximately.
9. What is the classification of the fluid flow if the fluid travels parallel to the a. 10 diameters downstream of the hole b. at jet’s minimum diameter
adjacent layers and the paths of the individual particles do not cross each c. at the orifice minimum diameter d.at the orifice maximum diameter
other? 18. An open manometer attached to a pipe shows a deflection of 150mmHg with
a. Steady flow b. Uniform flow the lower level of mercury 450mm below the center line of the pipe carrying
c. Laminar flow d. Turbulent flow water. Calculate the pressure at center of the line
10. A house is to be designed to withstand hurricane-force winds. The maximum a. 15.8 kPa b. 15.6kPa
m c.17.5 kPa d.16.6 kPa
wind velocity is v=88 . The surface area of the roof is A=450 m. If the 19. Which of the following is the other name of velocity gradient?
s
a. strain rate b. rate of shear formation
c. shear rate d. All of these
20. A wooden spherical ball with specific gravity of 0.42 and and a diameter of 9. These are pressures above or below the atmosphere and can be measured by
300mm is dropped from a height of 4.3m above the surface water in a pool of manometers.
an unknown depth. The ball barely touched the bottom of the pool before it a. Atmospheric pressure b. Vacuum pressure
began to float. Determine the depth of the pool. c. Gage pressure d. Absolute pressure
a. 3.11m b.5.12m 10. A reservoir of carbon tetrachloride has a mass of 400kg and a gravity of g =
c. 4.14 c.4.01m 9.87 m/s^2. Find the carbon tetrachloride’s weight.
a. 2868 N b. 4905 N
c. 7490 N d. 3948 N

SET- E
1. Which of the following is a Non-Newtonian fluid? 11. A pressure above absolute zero (vacuum).
a. Water b. Air a. Atmospheric pressure b. Vacuum pressure
c. Oils d. Blood c. Gage pressure d. Absolute pressure
2. In fluid mechanics, the conservation of mass relation written for a differential 12. the pressure lower than atmospheric pressure in a given area or container..
a. Atmospheric pressure b. Vacuum pressure
control volume is called _.
c. Gage pressure d. Absolute pressure
a. Bernoulli equation b. Reynold's number
13. A vacuum gage connected to a chamber reads 30 kPa at a location where the
c. Continuity equation d. Euler's number
atmospheric pressure is 90 kPa. Determine the absolute pressure in the
3. A right circular cone is 100mm in diameter and 200 mm high and weighs 1.6 N chamber.
in air. How much force is req’d to push the convert downward) in to a body of a. 75 kPa b. 68 kPa
liquid having a sp. Gr. 0.8 so that its base is exactly at the surface? How much c. 60 kPa d. 93 kPa
additional force is req’d to push the base 10mm below the surface? 14. The suction pressure of a pump reads 500 mm Hg vacuum. What is the
a. 2.51 N b. 3.01 N absolute pressure in kPa?
c. 3.45 N d. 4.0 N a. 34.66 kPa b. 25.67 kPa
4. Air at 17˚C and 125 kPa absolute pressure occupies 2.6 m³. Air has gas b. 24.3 kPa d. 30.3 kPa
constant of 287 J/kg K. if the gas is compressed to a volume of 1m³ and a 15. Oil of specific gravity 0.5 flows in a 100mm diameter pipe. Find the critical
pressure of 700kPa, calculate (a) its final temperature and (b) its mass. velocity. Use µ=5.14x10^-2 Pa-s.
a. T=350˚C, m=3.9kg b. T=387˚C, m=3.7kg a. 3.1 m/s b. 0.2056 m/s
c. T=412˚C, m=3.8kg d. T=424˚C, m=3.7kg c. 2.0175 m/s d. 1.0075 m/s
5. An oil of specific gravity of 0.95 is flowing through a pipeline of 200mm 16. Water flow through a 95 mm diameter pipe at a velocity of 5m/s. find the
volume flow rate in m3/s.
diameter at the rate of 50liters/s. Find the type of flow if viscosity for the oil is
a. 1.023 m3/s b. 0.22 m3/s
0.1Ns/m² c. 0.035 m /s3
d. 2.13 m3/s
a. 2876.2, Transitional Flow b. 3064.7, Transitional flow 17. A tube, usually bent in a form of U, containing a liquid of known specific gravity,
c. 2152,4, Laminar Flow d. 2263. 7, Laminar flow the surface of which moves proportionally to changes of pressure. It is used to
6. 6. A vacuum gage connected to a chamber reads 30 kPa at a location where measure pressure.
the atmospheric pressure is 80 kPa. Determine the absolute pressure in a. Manometer b. Barometer
the chamber. c. Bourdon tube d. Piezometer
a.40kPa b.50kPa 18. What is the specific gravity of a solid sphere that has a radius of 15 m and a
c.60kPa d.67kPa mass of 0.25kg?
7. A glass tube is attached to a water pipe. If the water pressure at the bottom of a. 1.768x10^-8 b. 5.7x10-3
the tube is 100 kPa and the local atmospheric pressure is 87 kPa, c. 2.768x10^-8 d. 3.768x10^-8
determine how high the water will rise in the tube, in m. Assume g = 9.81 m/s^2 19. It is a vertical tube, usually transparent, in which a liquid rises in response to a
at that location and take the density of water to be 1000 kg/m^3. positive gage pressure.
a. 1.13 m b.2.5m a. Manometer b. Barometer
c. Bourdon tube d. Piezometer
c. 2.25m d. 2.35m
20. A pressure gage 7 m above the bottom of a tank containing a liquid reads
8. The pressure at any one point on the earth’s surface from the weight above it.
64.94 KPa; another gage at height 4 m reads 87.53 KPa. Compute the mass
a. Atmospheric pressure b. Vacuum pressure density of the fluid.
c. Gage pressure d. Absolute pressure a. 766 kg/m3 b. 786 kg/m3
c. 776 kg/m3 d. 796 kg/m3