The section modulus of a circular section about an axis through its C.G., is

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The section modulus of a circular section about an axis through its C.G., is

A. πd²/4

B. πd²/16

C. πd³/16

D. πd³/32

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The most probable velocity of the gas molecules is given by

A. √(KT/m)

B. √(2KT/m)

C. √(3KT/m)

D. √(5KT/m)

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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

A. Isothermal process

B. Hyperbolic process

C. Adiabatic process

D. Polytropic process

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The measurement of a thermodynamic property known as temperature is based on

A. Zeroth law of thermodynamics

B. First law of thermodynamics

C. Second law of thermodynamics

D. None of these

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In compression test, the fracture in cast iron specimen would occur along

A. The axis of load

B. An oblique plane

C. At right angles to the axis of specimen

D. Would not occur

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Otto cycle consists of

A. Two constant volume and two isentropic processes

B. Two constant pressure and two isentropic processes

C. Two constant volume and two isothermal processes

D. One constant pressure, one constant volume and two isentropic processes

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The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

A. 23.97 bar

B. 25 bar

C. 26.03 bar

D. 34.81 bar

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The stress developed in a material at breaking point in extension is called

A. Breaking stress

B. Fracture stress

C. Yield point stress

D. Ultimate tensile stress

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The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx and σy) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by

A. OC

B. OP

C. OQ

D. PQ

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According to Kelvin-Planck's statement of second law of thermodynamics,

A. It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

B. It is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

C. It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body

D. None of the above

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The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as

A. Element

B. Compound

C. Atom

D. Molecule

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When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the minimum normal stress is

A. (σ_x/2) + (1/2) × √(σ_x² + 4 τ²_xy)

B. (σ_x/2) - (1/2) × √(σ_x² + 4 τ²_xy)

C. (σ_x/2) + (1/2) × √(σ_x² - 4 τ²_xy)

D. (1/2) × √(σx² + 4 τ²_xy)

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A shaft revolving at ω rad/s transmits torque (T) in Nm. The power developed is

A. T.ω watts

B. 2π. T.ω watts

C. 2π. T.ω/75 watts

D. 2π. T.ω/4500 watts

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The efficiency of Carnot cycle is maximum for

A. Gas engine

B. Petrol engine

C. Steam engine

D. Reversible engine

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The columns whose slenderness ratio is less than 80, are known as

A. Short columns

B. Long columns

C. Weak columns

D. Medium columns

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The efficiency of Diesel cycle increases with

A. Decrease in cut-off

B. Increase in cut-off

C. Constant cut-off

D. None of these

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In closed cycle gas turbine, the air is compressed

A. Isothermally

B. Isentropically

C. Polytropically

D. None of these

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Tensile strength of a material is obtained by dividing the maximum load during the test by the

A. Area at the time of fracture

B. Original cross-sectional area

C. Average of (A) and (B)

D. Minimum area after fracture

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In case of an under-reinforced beam, the depth of actual neutral axis is __________ that of the critical neutral axis.

A. Same as

B. Less than

C. Greater than

D. None of these

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Youngs modulus of a wire is defined as the stress which will increase the length of wire compared to its original length by

A. Half

B. Same amount

C. Double

D. One-fourth

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All perfect gases change in volume by 1/273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called

A. Boyle's law

B. Charles' law

C. Gay-Lussac law

D. Joule's law

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The total strain energy stored in a body is termed a

A. Resilience

B. Proof resilience

C. Modulus of resilience

D. Toughness

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A coil is cut into two halves, the stiffness of cut coil will be

A. Double

B. Half

C. Same

D. None of these

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For a simply supported beam of length l, when a concentrated load W is applied in the centre of the beam, the maximum deflection is

A. 5WL³/ 384EI

B. WL³/384EI

C. WL³/ 348EI

D. WL³/ 48EI

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Strain is defined as the ratio of

A. Change in volume to original volume

B. Change in length to original length

C. Change in cross-sectional area to original cross-sectional area

D. Any one of the above

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In an isothermal process,

A. There is no change in temperature

B. There is no change in enthalpy

C. There is no change in internal energy

D. All of these

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When a body is subjected to biaxial stress i.e. direct stresses (σ_x) and (σ_y) in two mutually perpendicular planes accompanied by a simple shear stress (τ_xy), then minimum normal stress is

A. (σ_x + σ_y)/2 + (1/2) × √[(σ_x - σ_y)² + 4 τ²_xy]

B. (σ_x + σ_y)/2 - (1/2) × √[(σ_x - σ_y)² + 4 τ²_xy]

C. (σ_x - σ_y)/2 + (1/2) × √[(σ_x + σ_y)² + 4 τ²_xy]

D. (σ_x - σ_y)/2 - (1/2) × √[(σ_x + σ_y)² + 4 τ²_xy]

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The atomic mass of nitrogen is __________ oxygen.

A. Equal to

B. Less than

C. More than

D. None of these

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Modulus of rigidity may be defined as the ratio of

A. Linear stress to lateral strain

B. Lateral strain to linear strain

C. Linear stress to linear strain

D. Shear stress to shear strain

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The natural solid fuel is

A. Wood

B. Coke

C. Anthracite coal

D. Pulverised coal

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The gas turbine cycle with regenerator improves

A. Thermal efficiency

B. Work ratio

C. Avoids pollution

D. None of these

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Accepted Answer

D. πd³/32

The section modulus of a circular section about an axis through its C.G., is

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

The most probable velocity of the gas molecules is given by

A process, in which the working substance neither receives nor gives out heat to its surroundings during its expansion or compression, is called

The measurement of a thermodynamic property known as temperature is based on

In compression test, the fracture in cast iron specimen would occur along

Otto cycle consists of

The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

The stress developed in a material at breaking point in extension is called

The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx and σy) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by

According to Kelvin-Planck's statement of second law of thermodynamics,

The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as

When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the minimum normal stress is

A shaft revolving at ω rad/s transmits torque (T) in Nm. The power developed is

The efficiency of Carnot cycle is maximum for

The columns whose slenderness ratio is less than 80, are known as

The efficiency of Diesel cycle increases with

In closed cycle gas turbine, the air is compressed

Tensile strength of a material is obtained by dividing the maximum load during the test by the

In case of an under-reinforced beam, the depth of actual neutral axis is __________ that of the critical neutral axis.

Youngs modulus of a wire is defined as the stress which will increase the length of wire compared to its original length by

All perfect gases change in volume by 1/273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called

The total strain energy stored in a body is termed a

A coil is cut into two halves, the stiffness of cut coil will be

For a simply supported beam of length l, when a concentrated load W is applied in the centre of the beam, the maximum deflection is

Strain is defined as the ratio of

In an isothermal process,

When a body is subjected to biaxial stress i.e. direct stresses (σ_x) and (σ_y) in two mutually perpendicular planes accompanied by a simple shear stress (τ_xy), then minimum normal stress is

The atomic mass of nitrogen is __________ oxygen.

Modulus of rigidity may be defined as the ratio of

The natural solid fuel is

The gas turbine cycle with regenerator improves

Also checkout

The section modulus of a circular section about an axis through its C.G., is

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

The most probable velocity of the gas molecules is given by

A process, in which the working substance neither receives nor gives out heat to its surroundings during its expansion or compression, is called

The measurement of a thermodynamic property known as temperature is based on

In compression test, the fracture in cast iron specimen would occur along

Otto cycle consists of

The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

The stress developed in a material at breaking point in extension is called

The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx and σy) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by

According to Kelvin-Planck's statement of second law of thermodynamics,

The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as

When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the minimum normal stress is

A shaft revolving at ω rad/s transmits torque (T) in Nm. The power developed is

The efficiency of Carnot cycle is maximum for

The columns whose slenderness ratio is less than 80, are known as

The efficiency of Diesel cycle increases with

In closed cycle gas turbine, the air is compressed

Tensile strength of a material is obtained by dividing the maximum load during the test by the

In case of an under-reinforced beam, the depth of actual neutral axis is __________ that of the critical neutral axis.

Youngs modulus of a wire is defined as the stress which will increase the length of wire compared to its original length by

All perfect gases change in volume by 1/273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called

The total strain energy stored in a body is termed a

A coil is cut into two halves, the stiffness of cut coil will be

For a simply supported beam of length l, when a concentrated load W is applied in the centre of the beam, the maximum deflection is

Strain is defined as the ratio of

In an isothermal process,

When a body is subjected to biaxial stress i.e. direct stresses (σx) and (σy) in two mutually perpendicular planes accompanied by a simple shear stress (τxy), then minimum normal stress is

The atomic mass of nitrogen is __________ oxygen.

Modulus of rigidity may be defined as the ratio of

The natural solid fuel is

The gas turbine cycle with regenerator improves

Also checkout

When a body is subjected to biaxial stress i.e. direct stresses (σ_x) and (σ_y) in two mutually perpendicular planes accompanied by a simple shear stress (τ_xy), then minimum normal stress is