Pure water is boiling in an open pan at atmospheric pressure. Salt at a temperature equal to that of the boiling water is added. Immediately after the salt dissolves, which of the following will most likely to occur?

Prefix Peta refers to

It is used to control the flow of liquid.

When cooled to a temperature approaching absolute zero, many materials have a sudden drop in their electrical resistivity to a value of almost zero. This phenomenon is known as

Energy changes are represented by all EXCEPT which one of the following.

A kind if valve used on pipelines to prevent backilow of liquid

The mass of a certain object is 10 grams, Is the expression F = ma valid on Mars ?

In the deep well installation or operation, the difference between static water level and operating water level is called

An object at rest may have

Momentum is most closely related to

The magnitude of the resultant of two forces is minimum when the angle between them is

Equilibrium conditions exists in all except which of the following:

Is a tube usually bent in the form of U, containing a liquid of known specific gravity. the surface of which moves proportionally to the changes of pressure

All of the following statements about the Carnot cycle are true EXCEPT

Is a opening with a closed perimeter through which the fluids flows:

Impulse is the change in

Prefix Exa refers to

On doubling the speed, N, of a centrifugal pump, all the following are true, except:

The specific gravity of a substance is the ratio of its density to that of

It is used mainly to completely close or completely open the line but not necessarily to control

The presence of oil or scale on boiler tubes causes...

The atomizer of a spray gun and the jets of a carburetor utilize

At sea level and normal temperature, atmosphere pressure is equivalent to

A law in fluids which states, "At any point in a liquid at rest, the pressure is the same in all directions"

Which of the following properties of water is not true?

An instrument which measures the depth of rainfall:

Is a conduit in which a liquid flow with free surface:

An isentropic process is one which

A law that states, for a given mass of gas, the volume remaining constant, the pressure vanes directly as the temperature and directly as the density.

Name the process that has no heat transfer.

Is a conveying tube attached to the end of a pipe or hose which serves to increase the velocity of the issuing jet:

What do you call the pressure which the fluid exerts on an immersed object or container walls?

Entropy is the measure of

The mass of a certain object is 10 grams, What would its mass when taken to the plan Mars?

It is the point where the buoyant force and the centedine intersect each other.

Is an instrument which is used for measuring the discharge through pipes:

A law that states, "when one or more liquids are put into a space of given volume the total pressure of the gas and vapor contained in the space is the sum of the separate pressures which each exert if were the only one present.

Is a graphical representation, with respect to any chosen datum of the potential head or energy which the liquid possesses at all sections of a pipe system

If the pressure on a confined gas in increased, the volume is decreases in accordance with Boyle's Law. When the pressure is retumed to its original value, the gas retum to its original volume. The gas has the property of.

Inward force that must be applied on the body to keep the body rotating in a circular motion.

What is the color code of steam pipe lines?

is used principally for alleviating the transient pressure in large pipeline system.

The heat transfer during adabalic procris is

The vena contracta of a sharp-edged hydraulic orifice usually occurs

An essential part of a large dam and provides an efficient and safe means of releasing flow water that exceeds the design capacity of the reservoir.

The equivalent spring stiffness ke for two springs k, and k 2 in series is:

A theorem that states," in steady flow the sum of the velocity head and the elevation head of any point is equal to the sum of corresponding heads at any other point plus or minus the losses in the head due to friction, plus if the last point is downstream from the first point, minus if upstream".

Enthaipy of an ideal gas is a function only of:

A pump is used to increase the pressure of the water entering the boiler of a steam power cycle. Which statement is true concerning the pump?

Is an overflow structure built across an open channel for the purpose of measuring the flow:

Cavitation is the result of

The equation of the curve formed by the path of a projectile is a

An inventor proposes to propel a ship by withdrawing heat from seawater and converting it all into work. Since the thermal energy of the sea is essentially unlimited, the ship could almost run forever without any fuel. This scheme fails because

A law that states, "for a given mass of gas, the pressure remaining constant, the volume of gas varies directly as the absolute temperature."

The moment of inertia of an object does not depend on

Cooling air in intercoolers between compression stages in a multi-stage air compressor....

The maximum thermal efficiency that can be obtained in an ideal reversible heat engine operating between 1540°F and 340°F is closest to.

An economizer is used to....

The equivalent spring stiffness ke for two springs k 1 and k 2 in parallel is:

In terms of QH (eat from high temperature source) and QL (heat to low temperature sink), the network of the Camot cycle is:

Which of the following is a safety device on compressor?

Gases have no definite

A law that states, "in equal volumes of gases with the same temperature and pressure the number of molecules is the same"

Which of the following thermodynamic cycles is the most efficient?