Lesson 1.1: Introduction to Engineering Utilities

Question 1

Liquids and gases together called _______.

Answer 1

fluids

Question 2

The ____________________ use liquids and / or called gases as working substance for transfer and transformation of energy from one form to another.

Answer 2

fluid machines

Question 3

The _________________ convert the potential energy or kinetic energy or pressure energy or thermal energy or internal energy of fluid into mechanical work and are called engines or turbines or prime movers or driving machine.

Answer 3

fluid machines

Question 4

The ____________________ may called pumps or compressors or blowers or fans to deliver fluids from low level of energy to higher level by consuming mechanical work

Answer 4

driven machines

Question 5

Is an equipment capable of handling fluid, either moving the fluid or moved by the fluid

Answer 5

Fluid Machinery

Question 6

Is a device which converts the energy stored by a fluid into mechanical energy or vice versa

Answer 6

Fluid Machinery

Question 7

The device in which the kinetic, potential or intermolecular energy held by fluid is converted in the form of mechanical energy in a rotating member is known as a ___________.

Answer 7

turbine

Question 8

Is the force of gravity in a unit volume of a substance.

Answer 8

Specific weight

Question 9

Is the mass per volume of a substance.

Answer 9

Density

Question 10

Is the volume of a unit mass of a substance or the reciprocal of density.

Answer 10

Specific volume

Question 11

Is the ratio of the specific weight of any substance to that of water or the ratio of density of any substance to that water.

Answer 11

Specific gravity

Question 12

Is a measure of the resistance to flow of a fluid; or it may be defined as the ratio of the shearing stress or force between adjacent layers of fluid to the rate of change of velocity perpendicular to the direction of motion.

Answer 12

Viscosity

Question 13

Is a dimensionless parameter used to determine the type of fluid while flowing through a pipe

Answer 13

Reynolds Number

Question 14

At low Reynolds numbers, flows tend to be dominated by ___________ flow, while at high Reynolds numbers flows tend to be __________.

Answer 14

laminar, turbulent

Question 15

Is the type of flow of fluid in which the fluid particles move along straight, parallel paths in layers or laminae.

Answer 15

Laminar Flow

Question 16

Is the type of flow of fluid in which the fluid particles move in a haphazard fashion in all directions.

Answer 16

Turbulent Flow

Question 17

Is a combination of laminar flow and turbulent flow.

Answer 17

Critical Flow (Transitional Flow)

Question 18

____________________ is an equation derived from the first law of thermodynamics of steady flow open system used to determine the mass flow rate and volume flow rate of fluid

Answer 18

Continuity equation

Question 19

It is a system used to move liquid at low pressure elevation to high pressure elevation.

Answer 19

Pump

Question 21

A machine that draws a fluid into itself through a suction port and forces that fluid out through a discharge port.

Answer 21

Pump

Question 22

A machine for moving a liquid, such as water, by accelerating it radially outward in an impeller to a surrounding volute casing.

Answer 22

Centrifugal pump

Question 23

A pump in which motion and pressure are applied to the fluid by a reciprocating piston in a cylinder.

Also known as piston pump.

Answer 23

Reciprocating pump

Question 24

A displacement pump that delivers a steady flow by the action of two members in rotational contact.

Answer 24

Rotary pump

Question 25

A multistage centrifugal pump for lifting water from deep, small diameter wells; a surface electric motor operates the shaft.

Also know as Vertical Turbine Pump.

Answer 25

Deep-well pump

Question 26

____________ is the height to which a column of fluid must rise to contain the same amount of energy as is contained in one unit weight or mass of fluid under the conditions being considered.

Answer 26

Head of Fluid

Question 27

Is a head based upon the elevation of the fluid above some arbitrarily chosen datum plane.

Answer 27

Potential or Actual head

Question 28

Is a measure of the kinetic energy contained in a unit mass fluid due to its velocity and is given by the familiar expression for kinetic energy.

Answer 28

Kinetic or Velocity Head

Question 29

Is the energy contained in the fluid as a result of its pressure and is equal to

Answer 29

Pressure head

Question 30

_______________________ is an equation used to determine the head of fluid.

Answer 30

Bernoulli’s equation