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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When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is

A. Coke

B. Wood charcoal

C. Bituminous coal

D. Briquetted coal

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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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The neutral axis of a transverse section of a beam passes through the centre of gravity of the section and is

A. In the vertical plane

B. In the horizontal plane

C. In the same plane in which the beam bends

D. At right angle to the plane in which the beam bends

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Which of the following statement is correct?

A. The stress is the pressure per unit area

B. The strain is expressed in mm

C. Hook's law holds good upto the breaking point

D. Stress is directly proportional to strain within elastic limit

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Workdone during adiabatic expansion is given by (where p₁ v₁, T₁ = Pressure, volume and temperature for the initial condition of gas, p_2, v₂, T₂ = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)

A. (p₁ v₁ - p₂ v₂)/(γ - 1)

B. [m R (T₁ - T₂)] /(γ - 1)

C. [m R T₁/(γ - 1)][1 - (p₂ v₂ /p₁ v₁)]

D. All of these

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The weakest section of a diamond riveting is the section which passes through

A. The first row

B. The second row

C. The central row

D. One rivet hole of the end row

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When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is

A. Tensile stress

B. Compressive stress

C. Shear stress

D. Thermal stress

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The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

A. Boyle's law

B. Charles' law

C. Gay-Lussac law

D. All of these

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Which of the following is a reversible non-flow process?

A. Isochoric process

B. Isobaric process

C. Hyperbolic process

D. All of these

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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

A. (m - 1)/ (2m - 1)

B. (2m - 1)/ (m - 1)

C. (m - 2)/ (3m - 4)

D. (m - 2)/ (5m - 4)

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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 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)

A. 0.5 s.l.σ_t

B. s.l.σ_t

C. √2 s.l.σ_t

D. 2.s.l.σt

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The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

A. More than 50 %

B. 25-50 %

C. 10-25 %

D. Negligible

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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 ratio of molar specific heats for mono-atomic gas is

A. 1

B. 1.4

C. 1.67

D. 1.87

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Within elastic limit, stress is

A. Inversely proportional to strain

B. Directly proportional to strain

C. Square root of strain

D. Equal to strain

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Modulus of rigidity is defined as the ratio of

A. Longitudinal stress to longitudinal strain

B. Volumetric stress to volumetric strain

C. Lateral stress to Lateral strain

D. Shear stress to shear strain

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In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are

A. Equal

B. Proportional to their respective moduli of elasticity

C. Inversely proportional to their moduli of elasticity

D. Average of the sum of moduli of elasticity

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A masonry dam may fail due to

A. Tension in the masonry of the dam and its base

B. Overturning of the dam

C. Crushing of masonry at the base of the dam

D. Any one of the above

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When both ends of a column are fixed, the effective length is

A. Its own length

B. Twice its length

C. Half its length

D. 1/√2 × its length

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When a closely-coiled helical spring of mean diameter (D) is subjected to an axial load (W), the stiffness of the spring is given by

A. Cd⁴/D³n

B. Cd⁴/2D³n

C. Cd⁴/4D³n

D. Cd⁴/8D³n

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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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If in the equation pvn = C, the value of n = ∝, then the process is called

A. Constant volume process

B. Adiabatic process

C. Constant pressure process

D. Isothermal process

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The processes occuring in open system which permit the transfer of mass to and from the system, are known as

A. Flow processes

B. Non-flow processes

C. Adiabatic processes

D. None of these

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The extremeties of any diameter on Mohr's circle represent

A. Principal stresses

B. Normal stresses on planes at 45°

C. Shear stresses on planes at 45°

D. Normal and shear stresses on a plane

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Hooke's law holds good up to

A. Yield point

B. Limit of proportionality

C. Breaking point

D. Elastic limit

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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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The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)

A. v₁/v₂

B. v₂/v₁

C. (v₁ + v₂)/v₁

D. (v₁ + v₂)/v₂

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The stress induced in a body, when suddenly loaded, is ________ the stress induced when the same load is applied gradually.

A. Equal to

B. One-half

C. Twice

D. Four times

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Which of the following statement is incorrect?

A. The liquid fuels consist of hydrocarbons.

B. The liquid fuels have higher calorific value than solid fuels.

C. The solid fuels have higher calorific value than liquid fuels.

D. A good fuel should have low ignition point.

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The natural solid fuel is

A. Wood

B. Coke

C. Anthracite coal

D. Pulverised coal

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Accepted Answer

B. Wood charcoal

When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

In an isothermal process,

The neutral axis of a transverse section of a beam passes through the centre of gravity of the section and is

Which of the following statement is correct?

Workdone during adiabatic expansion is given by (where p₁ v₁, T₁ = Pressure, volume and temperature for the initial condition of gas, p_2, v₂, T₂ = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)

The weakest section of a diamond riveting is the section which passes through

When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is

The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

Which of the following is a reversible non-flow process?

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

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

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)

The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

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

The ratio of molar specific heats for mono-atomic gas is

Within elastic limit, stress is

Modulus of rigidity is defined as the ratio of

In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are

A masonry dam may fail due to

When both ends of a column are fixed, the effective length is

When a closely-coiled helical spring of mean diameter (D) is subjected to an axial load (W), the stiffness of the spring is given by

Modulus of rigidity may be defined as the ratio of

If in the equation pvn = C, the value of n = ∝, then the process is called

The processes occuring in open system which permit the transfer of mass to and from the system, are known as

The extremeties of any diameter on Mohr's circle represent

Hooke's law holds good up to

The point of contraflexure is a point where

The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)

The stress induced in a body, when suddenly loaded, is ________ the stress induced when the same load is applied gradually.

Which of the following statement is incorrect?

The natural solid fuel is

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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

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

In an isothermal process,

The neutral axis of a transverse section of a beam passes through the centre of gravity of the section and is

Which of the following statement is correct?

Workdone during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)

The weakest section of a diamond riveting is the section which passes through

When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is

The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

Which of the following is a reversible non-flow process?

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

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

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)

The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

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

The ratio of molar specific heats for mono-atomic gas is

Within elastic limit, stress is

Modulus of rigidity is defined as the ratio of

In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are

A masonry dam may fail due to

When both ends of a column are fixed, the effective length is

When a closely-coiled helical spring of mean diameter (D) is subjected to an axial load (W), the stiffness of the spring is given by

Modulus of rigidity may be defined as the ratio of

If in the equation pvn = C, the value of n = ∝, then the process is called

The processes occuring in open system which permit the transfer of mass to and from the system, are known as

The extremeties of any diameter on Mohr's circle represent

Hooke's law holds good up to

The point of contraflexure is a point where

The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)

The stress induced in a body, when suddenly loaded, is ________ the stress induced when the same load is applied gradually.

Which of the following statement is incorrect?

The natural solid fuel is

Also checkout

Workdone during adiabatic expansion is given by (where p₁ v₁, T₁ = Pressure, volume and temperature for the initial condition of gas, p_2, v₂, T₂ = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)