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問題一覧
1
Body having identical properties all over it
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 the 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 characterized by
Appreciable plastic deformation prior to propagation 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 process involved in the transfer of moisture from the sea to the land and back to the sea again is known as
Hydrologic cycle
14
Branch of mechanics, with deals with the laws, governing the behaviors of water and other liquids in the states of rest in motion
Hydraulics
15
Formation which contains and transmit groundwater are known as
Aquifers
16
flow in which the individual fluid particles follow a straight line is known as
Laminar flow
17
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
Hope 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 resistance is called
Adhesion
23
Models of resilience is
Measure of 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 streamflow against time is known as
Hydrograph
26
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
Branch of hydraulics which deals with the study of forces, including velocity, and acceleration exerted upon by or open liquids in motion
Hydrodynamics
29
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
Continuity equation is applicable to
Conservation of mass
33
The pilot tube is a device used for measurement of
Velocity
34
Hydrometer is used to find out
Specific gravity of liquids
35
The machinability of steel can be increased by
Phosphorus, lead, and sulfur
36
Hastelloy contains
nickel and molybdenum
37
Addition of lead and bismuth to aluminum results in
Improving machinability
38
The most important element that controls the physical properties of steel is
Carbon
39
The internal assisting moment of a beam. it is opposite in the sense to the bending moment, but of the same magnitude
Moment of resistance
40
Poissons ratio is the ratio of
Unit lateral deformation to the unit longitudinal deformation
41
In a long column (slenderness>160) which of the following has the greatest influence on its tendency to buckle under a compressive load
Length of the column
42
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
43
Poissons ratio is principally used in
Stress strain relationships where is stresses are applied in more than one directions
44
The stress in an elastic material is
Proportional to the displacement of the material acted upon by the force
45
A beam securely fastened to the wall is subjected to three dimensional loading. How many components of reaction are possible
Six
46
The thermodynamic cycle used in a thermal power plant is
Rankine
47
Diesel cycle consist of
Two isentropic, one constant volume, one constant pressure process
48
Which cycle is generally used for gas turbine
Brayton cycle
49
Which of the following provides the basis for measuring thermodynamic property of temperature
Zeroth law of thermodynamics
50
The triple point of a substance is the temperature and pressure at which
Solid does not melt, the liquid does not boil in the gas does not condense
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 that’s equal amount of work . The above statement is known as.
Kelvin-Plank Law
52
Brighton cycle has
Two isentropic and two constant pressure process
53
Otto cycle consist of
Two isentropic and two constant volume process
54
Ericsson cycle has
Two isothermal and two constant pressure process
55
Which of the following engines is the least efficient?
Gasoline engine
56
Sterling cycle has
Two isothermal and two constant volume process
57
What is used for predicting the behavior of non-ideal gases
Compressibility factor
58
The critical point for a mixture occurs for which of the following cases
Vapor and liquid exist in a single form
59
Carnot cycle consist 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 of the following is the strongest type of bonds?
Covalent
62
An element may be defined as a substance. All atoms of each have the same
Atomic number
63
The device which measures the acid content of the cell
Hydrometer
64
A deuteron is
Nucleus containing a neutron and a proton
65
at the same pressure and temperature, equal volumes of all gases contain equal number of molecules. This is known as
Avogadro’s law
66
A substance which gives a protons to another substance
Acid
67
Elements which generally exhibit multiple oxidation state
Transition elements
68
An Angstrom unit commonly used for atomic and subatomic distances is
10^-10 m
69
When two bodies coma, isolated from other environment, or in thermal equilibrium with the third body, the two are in thermal equilibrium with the 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 in organic
The substance is heated together with copper oxide and the resulting gases are found to have no effect on lime stone
74
What element is known as the lightest metal?
Lithium
75
An element may be defined as a substance, all atoms of each 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, 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 the change in frequency is 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 address 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 the storage medium, such as a hard disk or floppy disk
File allocation table
81
A megabyte has exactly how many 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 small 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?
Mainframe computer
86
An email address should not consist of which of the following
Username and domain name
87
When an input signal A=10100 is applied to not gate, it’s output signal will be
01011
88
The binary coding scheme most common use in microcomputers is called
ASCii
89
The mass of a certain object is 10 g , what would its mass when taken to the planet mars?
10 g
90
Compounds of carbon and hydrogen, containing only carbon carbon single bonds
Alkanes
91
The ones from which titanium is obtained is
limanite
92
What do you call? Art 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
Round pieces of flat plastic that store data in the program as magnetized spots
Floppy disk
95
What does TTL mean?
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 mean
diode transistor micro logic
99
What market situation exist 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 one year period
Effective interest