Related Questions
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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
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4
Which of the following gas is mostly used in town for street and domestic lighting and heating?
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4
Carnot cycle has maximum efficiency for
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4
Shear modulus is the ratio of
A. Linear stress to linear strain
B. Linear stress to lateral strain
C. Volumetric strain to linear strain
D. Shear stress to shear strain
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4
One Joule (J) is equal to
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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 of expansion or compression is pvn = C, The process is said to be hyperbolic, if n is equal to
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4
The point of contra flexure is a point where
A. Shear force changes sign
B. Shear force is maximum
C. Bending moment changes sign
D. Bending moment is maximum
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4
The heating of gas at constant volume is governed by
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In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called
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The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is
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4
The increase in entropy of a system represents
A. Increase in availability of energy
B. Increase in temperature
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When a body is subjected to two equal and opposite pushes, as a result of which the body tends to reduce its length, then
A. The stress and strain induced is compressive
B. The stress and strain induced is tensile
C. Both A and B is correct
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In the below figure, curve D represents_________.
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4
Hooke's law holds good up to
B. Limit of proportionality
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Select the correct statement as per Charles' law
A. p.v = constant, if T is kept constant
B. v/T = constant, if p is kept constant
C. p/T = constant, if v is kept constant
D. T/p = constant, if v is kept constant
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4
During which of the following process does heat rejection takes place in Carnot cycle?
C. Isothermal compression
D. Isentropic compression
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4
Slenderness of a column is zero when
B. Column is supported on all sides throughout the length
C. Length is equal to radius of gyration
D. Length is twice the radius of gyration
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4
Shear stress induced in a shaft subjected to tension will be
A. Maximum at periphery and zero at center
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The gas constant (R) is equal to the __________ of two specific heats.
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The materials having same elastic properties in all directions are called
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A process, in which the working substance neither receives nor gives out heat to its surroundings during its expansion or compression, is called
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One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
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The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to
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4
If the value of n = 0 in the equation pvn = C, then the process is called
A. Constant volume process
C. Constant pressure process
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For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.
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4
A double strap butt joint with equal straps is
A. Always in single shear
B. Always in double shear
C. Either in single shear or double shear
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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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One kg of carbon monoxide requires 4/7 kg of oxygen and produces
A. 11/3 kg of carbon dioxide gas
B. 7/3 kg of carbon monoxide gas
C. 11/7 kg of carbon dioxide gas
D. 8/3 kg of carbon monoxide gas
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The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.