Related Questions
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4
The efficiency of Carnot cycle depends upon
C. Volume compression ratio
D. Cut-off ratio and compression ratio
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4
When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the maximum normal stress i
A. (σx/2) + (1/2) × √(σx² + 4 τ²xy)
B. (σx/2) - (1/2) × √(σx² + 4 τ²xy)
C. (σx/2) + (1/2) × √(σx² - 4 τ²xy)
D. (1/2) × √(σx² + 4 τ²xy)
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4
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
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4
When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the maximum shear stress is
A. (σx/2) + (1/2) × √(σx² + 4 τ²xy)
B. (σx/2) - (1/2) × √(σx² + 4 τ²xy)
C. (σx/2) + (1/2) × √(σx² - 4 τ²xy)
D. (1/2) × √(σx² + 4 τ²xy)
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4
A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is
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4
The __________ is obtained when carbonisation of coal is carried out at 500° to 700° C.
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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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4
The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
D. Increase/decrease depending on application
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The property of a material by virtue of which a body returns to its original, shape after removal of the load is called
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When a gas is heated, change takes place in
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In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.
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4
Impact strength of a material is an index of its
C. Capability of being cold worked
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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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4
The point of contraflexure is a point where
A. Shear force changes sign
B. Bending moment changes sign
C. Shear force is maximum
D. Bending moment is maximum
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4
The general law for the expansion or compression of gases, is
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The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length is __________ at the fixed end.
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A concentrated load is one which
A. Acts at a point on a beam
B. Spreads non-uniformly over the whole length of a beam
C. Spreads uniformly over the whole length of a beam
D. Varies uniformly over the whole length of a beam
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4
In compression test, the fracture in cast iron specimen would occur along
C. At right angles to the axis of specimen
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4
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
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4
The bending equation is
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4
In the below figure, the plastic range occurs
C. Between points A and D
D. Between points D and E
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4
The change of entropy, when heat is absorbed by the gas, is
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The intensity of stress which causes unit strain is called
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The materials which exhibit the same elastic properties in all directions are called
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One kg of carbon monoxide requires _______kg of oxygen to produce 11/7 kg of carbon dioxide gas.
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When a body is subjected to a direct tensile stress (σ) in one plane, then maximum normal stress occurs at a section inclined at __________ to the normal of the section.
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4
The gas turbine cycle with regenerator improves
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4
A shaft revolving at ω rad/s transmits torque (T) in Nm. The power developed is
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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)
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4
The most probable velocity of the gas molecules is given by