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The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.
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Percentage reduction in area performing tensile test on cast iron may be of the order of
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Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the un-punched plate in
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For a beam, as shown in the below figure, when the load W is applied in the centre of the beam, the maximum deflection is
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Strain energy is the
A. Energy stored in a body when strained within elastic limits
B. Energy stored in a body when strained up to the breaking of a specimen
C. Maximum strain energy which can be stored in a body
D. Proof resilience per unit volume of a material
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4
The rivets are used for __________ fastenings.
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The efficiency of a Carnot engine depends on
D. Temperatures of source and sink
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The efficiency and work ratio of a simple gas turbine cycle are
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Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as
A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Kinetic theory of gases
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During which of the following process does heat rejection takes place in Carnot cycle?
C. Isothermal compression
D. Isentropic compression
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In a uniform bar, supported at one end in position, the maximum stress under self weight of bar shall occur at the
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The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its maximum crushing stress of punch, is equal to (where t = Thickness of the plate)
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When two plates are butt together and riveted with cover plates with two rows of rivets, the joint is known as
C. Single riveted single cover butt joint
D. Double riveted double cover butt joint
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A cycle consisting of two isothermal and two isentropic processes, is known as
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A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the
B. Perpendicular to the axis of load
C. Maximum moment of inertia
D. Minimum moment of inertia
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In the below figure, the stress corresponding to point D is
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A material obeys hooks law up to
D. Limit of proportionality
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The ratio of the largest load in a test to the original cross-sectional area of the test piece is called
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Which of the following has the minimum atomic mass?
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The maximum tangential stress in a thick cylindrical shell is always _________ the internal pressure acting on the shell.
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In an irreversible process, there is a
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Strain is equal to (where l = Original length, and δl = Change in length)
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The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as
A. Law of equipartition of energy
B. Law of conservation of energy
C. Law of degradation of energy
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When the gas is heated at constant pressure, the heat supplied
A. Increases the internal energy of the gas
B. Increases the temperature of the gas
C. Does some external work during expansion
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One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to
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In case of an under-reinforced beam, the depth of actual neutral axis is __________ that of the critical neutral axis.
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When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is
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The weakest section of a diamond riveting is the section which passes through
D. One rivet hole of the end row
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The lower layer of the beam as shown in the below figure, will be
C. Neither in tension nor in compression
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If Th is the torque resisting capacity of a hollow shaft and Ts is that of a solid shaft, of the same material, length and weight. Then,