Esas 1

Ashley Calica · 10問 · 2年前

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A body having identical properties all over it is called

Homogenous

Fatigue failure when a part is subjected to

Compressive stress

According to Kepler's Law of motion the square of the time period "T" of a planet around the sun is proportional to the

Cube of the mean distance of planet from sun

A man is standing near the edge of a uniformly rotating platform about an axis passing through its center. The speed of rotation of the platform will decrease if he

Accepts heavy bag from one man standing nearby and hold it in his hand

If a material recovers its original; dimensions, when the load is removed, it is called

Elastic

The behavior of metals where in strength of a metal is increased and the ductility is decreased on heating at a relatively low temperature after cold working, is called

Strain aging

A ductile frácture is characterized by

Appreciable plastic deformation prior to propagation of crack

In a complete heat engine cycle, which of the following is the area enclosed by the PV-diagram?

The work done by the engine per cycle

Which of the following engines is the least efficient?

Gasoline engine

Which of the following engines is the most efficient?

Carnot engine

Which of the following is the process that cannot be found in a Carnot engine cycle?

Isobaric expansion

In any process, the maximum amount of heat that can be converted in to mechanical energy:

Depends on the intake and exhaust temperature

The processed involved in the transfer of moisture from the sea to the land and back to the sea again is known as

Hydrologic cycle

A branch of mechanics with deals with the laws governing the behaviors of water and other liquids in the states of rest and motion.

Hydraulics

Formation which contains and transmit ground water are known, as

Aquifers

of flow in which the individual fluid particles follow straight line path is known as

Laminar flow

A type of flow in which individual fluid particles take random path.

Turbulent flow

When shear force is zero along a section, the bending moment at that section will be

Minimum or maximum

Select the one that has no unit

Strain

Hoop stress refers to

Circumferential tensile stress

The intensity of stress that causes unit strain is known as

Modulus of elasticity

The volumetric change of the fluid caused by a resistance is called

Adhesion

"Modulus of resilience" is:

a measure of a materials ability to store strain energy

When evaporation takes place within an enclosed space, the partial pressure created by the vapor molecules is called

Vapor pressure

A graphical representation of stream flow against time is known as

Hydrograph

The units for dynamic viscosity is

Pa.sec

Cavitation is the result of

static pressure in a fluid becoming less than fluid vapor pressure

A branch of hydraulics which deals with the study of forces (including velocity and acceleration) exerted upon by or upon liquids in motion.

Hydrodynamics

The hydraulic radius is given by

Area divided by wetted perimeter

Which of the following is NOT a dimensionless parameter?

Kinematic viscosity

An ideal fluid is one that

Frictionless and incompressible

The continuity equation is applicable to

Conservation of mass

The pitot tube is a device used for measurement of

Velocity

Hydrometer is used to find out

Specific gravity of liquids

The machinability of steel can be increased by

Phosphorus, lead and sulfur

Hastelloy contains

Nickel & molybdenum

Addition of lead and bismuth to aluminum results in

Improving machinability

The most important element that controls the physical properties of steel is

Carbon

It is the internal resisting moment of a beam. It is opposite in the sense to the bending moment but of the same magnitude.

Moment of resistance

Poisson's ratio is the ratio of the

Unit lateral deformation to the unit longitudinal deformation

In a long column (slenderness ratio > 160) which of the following has the greatest influence on its tendency to buckle under a compressive load

The length of the column

The area of the shear diagram of a beam between any two points on the beam is equal to:

change moments between the two points

Poisson's ratio is principally used in

Stress-strain relationships where stresses are applied in more than one direction

The stress in an elastic material is

proportional to the displacement of the material acted upon by the force

A beam, securely fastened to a wall, is subjected to three-dimensional loading. How many components of reaction are possible?

Six

The thermodynamic cycle used in a thermal power plant is?

Rankine

Diesel cycle consists of:

Two isentropic, one constant volume, one constant pressure process

Which cycle is generally used for gas turbine?

Brayton cycle

Which of the following provides the basis for measuring thermodynamic property of temperature?

Zeroth law of thermodynamics

The triple point of a substance is the temperature and pressure at which

The solid does not melt, the liquid does not boil and the gas does not condense

It is impossible to construct a heat engine that operates in a cycle and receives a given quantity of heat from a high temperature body and does equal amount of work" The above statement is known as:

Kelvin Plank Law

Brayton cycle has:

Two isentropic and two constant pressure processes

Otto cycle consists of:

Two isentropic and two constant volume processes

An Ericsson cycle has:

Two isothermal and two constant pressure processes

Which of the following engines is the least efficient?

Gasoline engine

A Sterling cycle has:

Two isothermal and two constant volume processes

What is used for predicting the behavior of non ideal gases?

Compressibility factor

The critical point for a mixture occurs for which of the following cases?

The vapor and liquid exist in a single form

A Carnot cycle consists of the following which one is NOT?

Reversible constant heat addition

Which of the following statements regarding organic substances is FALSE?

Organic matter is generally stable at very high temperature

Which of the following is the strongest type of bonds?

Covalent

An element maybe defines as a substance, all atoms of which have the same:

atomic number

The device which measures the acid content of the cell is called

hydrometer

A deuteron is

A nucleus containing a neutron and a proton

At the same pressure and temperature equal volumes of all gases contain equal number of molecules." This is known as:

Avogadro's law

A substance which gives up protons to another substance is called

acid

Elements which generally exhibits multiple oxidation state are

transition elements

An Angstrom unit, commonly used for atomic and sub-atomic distances Is:

10^-10 m

When two bodies, isolated from ather environment, are in thermal equilibrium with the thirt body, the two are in thermal equilibrium with each other. What do you call this statement?

Zeroth law of thermodynamics

It is the property of absorbing moisture from atmosphere?

Porosity

Cross-linking of natural rubber is known as

Vulcanization

Which of the foliowing statements regarding organic subsiances is FALSE?

Organic matter is generally stable at very high temperature

Which of the following is most likely to prove that a substance is inorganic?

The substance is heated together with copper oxide and the resulting gases are found to have no effect on limestone

What eiement is known as the lightest metal?

Lithium

An element maybe defines as a substance, all atoms of which have the same:

atomic number

What is the measure of the lumen output per watt input produced by the light source?

efficacy

When a source of sound is moving with respect to an observer or an observer is moving with respect to the source, the pitch of sound heard by the observer is different from the pitch heard when the source and observer are both at rest. What do you call this change in frequency caused by the motion?

Doppler effect

What refers to the computer's use of hard disk storage to simulate RAM?

Virtual memory

What register holds the data being written into or read out of the addressed memory location?

Memory data register

A special file that is used by the operating system to store the physical location of all the files on a storage medium, such as a hard disk or floppy disk is called

File allocation table

A megabyte is exactly ______ bytes

1,048,576

What is the term used to describe the moving of software from another computer to your own computer?

Downloading

What is the term for a high-speed memory used to store a small amount of data temporarly so that the data can be retrieved quickly?

Scratchpad memory

What type of file has a record of website activity?

Cookie file

What is a large computer called?

A main frame computer

An e-mail address should consist of which of the following?

User name and domain name

When an input signal A = 10100 is applied to a NOT gate, its output signal will be

01011

The binary coding scheme most common used in microcomputers is called

ASCll

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

10/6 grams

Are compounds of carbon and hydrogen containing only carbon-carbon single bonds?

Alkanes

The ores from which Titanium is obtained is?

Limanite

What do you call earth and stone mixed with the iron oxide?

Gangue

What is a coal that has been previously burned in an oxygen-poor environment?

Coke

______ are round pieces of flat plastic that store data and program as magnetized spots.

floppy disk

What does "TTL" means?

Transistor Logic

_____ data is collected over several days or weeks and then processed all at one time.

Batch

What does "CMOS" means?

Complimentary Metal-Oxide Semiconductor

What does "DTML" means?

Diode Transistor Micro Logic

What market situation exists where there are few sellers and few buyers?

Bilateral oligopoly

100

The true value of interest rate computed by equations for compound interest for a 1-year period is known as

Effective interest

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