1. Water Concentration
a. 61.6 (mol/l)
b. 59.7 (mol/l)
c. 58.8 (mol/l)
d. 55.6 (mol/l)
55.6 (mol/l)
2. Water Molar Mass
a. 38 (g/mol)
b. 18 (g/mol)
c. 28 (g/mol)
d. 48 (g/mol)
18 (g/mol)
3. Density of Water is in (g/mol)
a. 998.9 kg/l
b. 1 g/cm3
c. 1000 g/m3
d. 1 g/l
1 g/cm3
4. Density of Water is in (KN/m3)
a. 998.9 KN/m3
b. 9.81 KN/m3
c. 11 KN/m3
d. 12 KN/m3
9.81 KN/m3
5. Archimedes principal for bouncy is based on
a. Area
b. Moment of inertia
c. Intensity of water
d. Weight
Weight
6. Hydraulic Jump is always
a. Critical
b. Sub-Critical
c. Super-Critical
d. Depends
Super-Critical
7. The formula used in getting Flow in open channels is:
a. Darcy Low
b. Bernoulli Equation
c. Manning Equation
d. None of these
Manning Equation
8. For subcritical flow in an open channel, the control section for gradually varied flow profiles is:
a. At the downstream
b. At the upstream
c. At both downstream & upstream
d. At any intermediate section
At the downstream
9. A high efficiency pump is required for low discharge, high head and low maintenance cost. Delivery of water need not be continuous. The pump need not run at high speed. Which one of the following is the correct choice ?
a. Centrifugal pump
b. Reciprocating pump
c. Air lift pump
d. Hydraulic ram
Reciprocating pump
10. The following steps are involved in making a spigot and socket joint of cast iron pipes used in water supply systems:
1. Tarred gasket or hemp yarn in wrapped around the spigot.
2. The spigot end is centered into the socket end of the preceding pipe.
3. A joining ring end is placed around the barrel and against the face of the socket.
4. The gasket or hemp yarn in caulked slightly.
5. Molten pig lead is poured and then caulked.
The correct sequence of these steps is
a. 2, 1, 4, 3, 5
b. 2, 1, 3, 4, 5
c. 1, 2, 4, 5, 3
d. 1, 2, 3, 5, 4
1, 2, 4, 5, 3
11. To generate 10, 000 hp under a head of 81 m while working at a speed of 500 rpm, the turbine of choice would be:
a. Pelton
b. Kaplan
c. Bulb
d. Francis
Francis
12. The given figure shows gradually varied flow in an open channel with a beak in bed slope. Types of water surface profiles occurring from left to right are
a. H2 , S3
b. H2 , S2
c. H2 , M2
d. H3 , M2
H2 , S2
13. Which of the following assumptions are made in the analysis of jet impinging normally on a moving plate?
1. Friction between jet and plate is neglected
2. Flow is steady
3. Momentum of jet is unchanged
4. Plate moves at a constant velocity
Choose the correct answer using the codes given below:
a. 1, 2 and 4
b. 1, 2 and 3
c. 2, 3 and 4
d. 1, 3 and 4
2, 3 and 4
14. Which one of the following pairs relating to flumes carrying open channel flow is correctly matched?
a. N-modular flume….Flow is unaffected by drowning
b. Ventura flume….Standing wave forms at the throat
c. Ventura flume….Flow at the throat is at less than critical velocity
d. Standing wave flume….Hump is not provided at the throat
Ventura flume….Flow at the throat is at less than critical velocity
15. The acceleration components of a fluid particle are denoted as
1. Local tangential acceleration.
2. Convective tangential acceleration.
3. Local normal acceleration.
4. Convective normal acceleration.
In a curved nozzle fitted to the end of straight pipeline carrying water under Variable head, the acceleration components that are present would include Select one
a. 1 and 2
b. 3 and 4
c. 1, 2 and 4
d. 1, 2, 3 and 4
1, 2 and 4
16. What is the definition of viscosity?
a. The ability of a fluid to exert an upward force on an object immersed in it.
b. The measure of a fluid’s resistance to flow.
c. The pressure exerted by a fluid at rest.
d. The ratio of the density of a fluid to the density of water.
The measure of a fluid’s resistance to flow
17. Pascal’s law is applicable to
a. Gases only
b. Liquids only
c. Both gases and liquids
d. Neither gases nor liquids
Both gases and liquids
18. Which of the following is an example of laminar flow?
a. Flow of water through a smooth pipe
b. Flow of oil through a rough pipe
c. Flow of air over a rough surface
d. Flow of water through a turbulent river
Flow of water through a smooth pipe
19. What is the unit of dynamic viscosity?
a. N/m^2
b. Ns/m^2
c. kg/m^2
d. kg/m
Ns/m^2
20. The buoyant force acting on a body immersed in a fluid is equal to:
a. Weight of the fluid displaced
b. Weight of the body
c. Volume of the body
d. Surface area of the body
Weight of the fluid displaced
21. Bernoulli’s equation is based on the principle of conservation of
a. Energy
b. Mass
c. Momentum
d. Volume
Energy
22. What is the Reynolds number used to predict in fluid flow
a. Pressure drop
b. Flow rate
c. Flow regime (laminar or turbulent)
d. Density of the fluid
Flow regime (laminar or turbulent)
23. The term “head” in fluid mechanics refers to:
a. Pressure
b. Velocity
c. Energy per unit weight
d. Density
Energy per unit weight
24. Which pump is more efficient for high head applications?
a. Centrifugal pump
b. Reciprocating pump
c. Both are equally efficient
d. It depends on the fluid viscosity
Reciprocating pump
25. The force exerted by a fluid at rest perpendicular to any surface in contact with it is known as
a. Shear force
b. Buoyant force
c. Pressure force
d. Frictional force
Pressure force
26. What is the term for the force per unit area exerted by a fluid at any point within the fluid?
a. Density
b. Pressure
c. Viscosity
d. Surface tension
Pressure