問題一覧
1
A body having identical properties all over it is called ____.
Homogenous
2
Fatigue failure when a part is subjected to
Compressive stress
3
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
4
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
5
If a material recovers its original, dimensions, when the load is removed, it is called
Elastic
6
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
7
A ductile fracture is charecterized by
Appreciableq plastic deformation prior to propagatión of crack
8
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
9
Which of the following engines is the least efficient ?
Gasoline engine
10
Which of the following engines is the most efficient
Carnot engine
11
Which of the following is the process that cannot be found in a carnot engine cycle
Isobaric expansion
12
In any process, the maximum amount of heat that can be converted into mechanical energy
Depends on the intake and exhaust temperature
13
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
14
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
15
Formation which contains and transmit ground water are known as
Aquifers
16
A flow in which the individual fluid particles follow straight line path is known as
Laminar flow
17
A type of flow in which individual fluid particles take random path
Turbulent flow
18
When shear force is zero along a section, the bending moment at that section will be
Minimum or Maximum
19
Select the one that has no unit
Strain
20
Hoop stress refers to __
Circumferential tensile stress
21
The intensity of stress that causes unit strain is known as
Modulus of elasticity
22
The volumetric change of the fluid caused by a resistance is called
Adhesion
23
"Modulus of resilence" is:
measure of a materials ability to store strain energy
24
When evaporation takes place within an enclosed space, the partial pressure created by the vapor molecules is called
Vapor pressure
25
A graphical representation of stream flow against time is known as
Hydrograph
26
The units for dynamic viscosity is
Pa.sec
27
Cavitation is the result of
static pressure in a fluid becoming less than fluid vapor pressure
28
A branch of hydraulics which deals with the study of forces (including velocity and acceleration) exerted upon by or upon liquids in motion.
Hydrodynamics
29
The hydraulic radius is given by ____
Area divided by wetted perimeter
30
Which of the following is NOT a dimensionless parameter?
Kinematic viscosity
31
An ideal fluid is one that
Frictionless and incompressible
32
The continuity equation is applicable to __
Conservation of mass
33
The pitot tube is a device used for measurement of ___
Velocity
34
The machinability of steel can be increased by ___
Phosphorus, Lead and sulfur
35
Hastelloy contains
Nickel & moylbdenum
36
Addition of lead and bismuth to aluminum results in
Improving machinability
37
The most important element that controls the physical properties of steel is
Carbon
38
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
39
Poisson's ratio is tha ratio of the ___
Unit lateral deformation to the unit longitudinal deformation
40
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
41
The area of the shear diagram of a beam between any two points on the beam is equal to:
Change in moment between the two points
42
Poisson's ratio is principally used in
Stress-strain relationships where stresses are applied in more than one direction
43
The stress in an elastic material is:
inversely proportional to the material's yield strength
44
A beam, securely fastened to a wall, is subjected to three-dimensional loading. How many components of reaction are possible?
Six
45
The thermodynamic cycle used in a thermal power plant is?
Rankine
46
Diesel cycle consists of
Two isentropic, one constant volume, one constant pressure process
47
Which cycle is generally used for gas turbine?
Brayton cycle
48
Which of the following provides the basis for measuring thermodynamic property of temperature?
Zeroth law of thermodynamics
49
The triple point of a substance is the temperature and pressure at which
The solid does not melt, the liquid does not bail and the gas does not condense
50
Hydrometer is used to find out ___
Specific gravity of liquids
51
"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
52
Brayton cycle has:
Two isentropic and two constant pressure processes
53
Otto cycle consists of:
Two isentropic and two constant volume processes
54
An Erickson cycle has:
Two isothermal and two constant pressure processes
55
Which of the following engines is the least efficient?
Gasoline engine
56
A sterling cycle has
Two isothermal and two constant volume processes
57
What is used for predicting the behavior of non ideal gases?
Compresseibilty factor
58
The critical point for a mixture occurs for which of the following cases?
The vapor and liquid exist in a single form
59
A Camot cycle consists of the following which one is NOT?
Reversible constant heat addition
60
Which of the following statements regarding organic substances is FALSE?
Organic matter is generally stable at very high temperature
61
which off the following is the strongest type of bonds
Covalent
62
An element may be defined as a substance, all atoms of which have the same
Atomic number
63
The device which measure the acid content of the cell is called ____
Hydrometer
64
A deuteron is ___
A nucleus containing a neutron and a proton
65
"The same pressure and temperature equal volumes of August as cooking equal number of molecules ". This is known as:
Avogadro's law
66
substance which gives up protons to another substance is called
Acid
67
Elements which generally exhibits multiple oxidation state are ___
Transition elements
68
An Angstrom unit, commonly used for atomic and sub-atomic distances is:
10^-9 m
69
When two bodies, isolated from other environment, are in thermal equilibrium with the third body, the two are in thermal equilibrium with each other. What do you call this statement?
Zeroth law of thermodynamics
70
It is the property of absorbing moisture from atmosphere?
Porosity
71
Cross-linking of natural rubber is known as:
Vulcanization
72
Which of the following statements regarding organic substances is FALSE?
Organic matter is generally stable at very high temperature
73
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
74
What element is known as the lightest metal?
Lithium
75
An element maybe defines as a substance, all atoms of which have the same:
Atomic number
76
What is the measure of the lumen output per watt input produced by the light source?
efficacy
77
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
78
What refers to the computers use of hard disk storage to simulate RAM?
Virtual memory
79
What register holds the data being written into or read out of the addressed memory location?
Memory data register
80
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
81
A megabyte is exactly ___ bytes.
1,048,576
82
What is the term used to describe the moving of software from another computer to your own computer?
Downloading
83
What is the term for a high-speed memory used to store a smali amount of data temporarily so that the data can be retrieved quickly?
Scratchpad memory
84
What type of file has a record of website activity?
Cookie file
85
What is a large computer called?
A main frame computer
86
An e-mail address should consist of which of the following?
User name and domain name
87
When an input signal A = 10100 is applied to a NOT gate, its output signal will be _____
01011
88
The binary coding scheme most common used in microcomputers is called ____
ASCII
89
The mass of a certain object is 10 grams, What would its mass when taken to the planet Mars?
10 grams
90
Are compounds of carbon and hydrogen containing only carbon-carbon single bonds?
Alkanes
91
The ores from which Titanium is obtained is?
Limanite
92
What do you call earth and stone mixed with the iron oxide?
Gangue
93
What is a coal that has been previously burned in an oxygen-poor environment?
Coke
94
_____ are round pieces of flat plastic that store data and program as magnetized spots.
floppy disk
95
What does "TTL" means
Transistor Logic
96
____ data is collected over several days or weeks and then processed all at one time.
Batch
97
What does "CMOS" means?
Complimentary Metal-Oxide Semiconductor
98
What does "DTML" means?
Diode Transistor Micro Logic
99
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