The property of a material by virtue of which it can be beaten or rolled into plates is called
Malleability
Ductility
Plasticity
Elasticity
Correct Answer :
A. Malleability
Related Questions
The natural solid fuel is
Wood
Coke
Anthracite coal
Pulverised coal
The mass of carbon per kg of flue gas is given by
(11/3) CO2 + (3/7) CO
(3/7) CO2 + (11/3) CO
(7/3) CO2 + (3/11) CO
(3/11) CO2 + (7/3) CO
A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the
Axis of load
Perpendicular to the axis of load
Maximum moment of inertia
Minimum moment of inertia
The distance between the centres of the rivets in adjacent rows of zigzag riveted joint is known as
Pitch
Back pitch
Diagonal pitch
Diametric pitch
When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as
Thermodynamic law
Thermodynamic process
Thermodynamic cycle
None of these
A thin cylindrical shell of diameter (D) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to volumetric strain is
(m - 1)/ (2m - 1)
(2m - 1)/ (m - 1)
(m - 2)/ (3m - 4)
(m - 2)/ (5m - 4)
The gas constant (R) is equal to the
Sum of two specific heats
Difference of two specific heats
Product of two specific heats
Ratio of two specific heats
When a beam is subjected to a bending moment, the strain in a layer is __________ the distance from the neutral axis.
Equal to
Directly proportional to
Inversely proportional to
Independent of
The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, l = Length of weld, and σt = Allowable tensile stress for weld metal)
0.5 s.l.σt
s.l.σt
√2 s.l.σt
2.s.l.σt
The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is
0.086
1.086
1.086
4.086
In the below figure, curve D represents_________.
Mild steel
Cast iron
Concrete
Bone of these
The stress necessary to initiate yielding is
Considerably greater than that necessary to continue it
Considerably lesser than that necessary to continue it
Greater than that necessary to stop it
Lesser than that necessary to stop it
The amount of heat generated per kg of fuel is known as
Calorific value
Heat energy
Lower calorific value
Higher calorific value
When the gas is heated at constant volume, the heat supplied
Increases the internal energy of the gas and increases the temperature of the gas
Does some external work during expansion
Both (A) and (B)
None of these
Otto cycle is also known as
Constant pressure cycle
Constant volume cycle
Constant temperature cycle
Constant temperature and pressure cycle
The throttling process is __________ process.
Reversible
Irreversible
Reversible or irreversible
None of these
The __________ is obtained when carbonisation of coal is carried out at 500° to 700° C.
Soft coal
Hard coal
Pulverised coal
Bituminous coal
The work ratio of a gas turbine plant is given by
(Net work output)/(Workdone by the turbine)
(Net work output)/(Heat supplied)
(Actual temperature drop)/(Isentropic temperature drop)
(Isentropic increase in temperature)/(Actual increase in temperature)
The value of cp/cv for air is
1
1.4
1.45
2.3
Which of the following is the correct statement of the second law of thermodynamics?
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.
It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source.
There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy.
All of the above
A process, in which the temperature of the working substance remains constant during its expansion or compression, is called
Isothermal process
Hyperbolic process
Adiabatic process
Polytropic process
Steam coal is a
Pulverised coal
Brown coal
Coking bituminous coal
Non-coking bituminous coal
If the rivets in adjacent rows are staggered and the outermost row has only one rivets, the arrangement of the rivets is called
Chain riveting
Zigzag riveting
Diamond riveting
Crisscross riveting
When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
Kelvin Planck's law
A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum shear stress will be
-100 MPa
250 MPa
300 MPa
400 MPa
When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as
Young's modulus
Modulus of rigidity
Bulk modulus
Poisson's ratio
In compression test, the fracture in cast iron specimen would occur along
The axis of load
An oblique plane
At right angles to the axis of specimen
Would not occur
The sum of internal energy (U) and the product of pressure and volume (p.v) is known as
Workdone
Entropy
Enthalpy
None of these
The mass of flue gas per kg of fuel is the ratio of the
Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel
Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas
Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel
Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas
The maximum stress produced in a bar of tapering section is at
Smaller end
Larger end
Middle
Anywhere