The absolute zero pressure will be

Question

The absolute zero pressure will be

A. When molecular momentum of the system becomes zero

B. At sea level

C. At the temperature of - 273 K

D. At the centre of the earth

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When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called

A. Wood charcoal

B. Bituminous coal

C. Briquetted coal

D. None of these

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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

A. 30 kJ

B. 54 kJ

C. 84 kJ

D. 114 kJ

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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 thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

A. r^γ - 1

B. 1 - r^γ - 1

C. 1 - (1/r)^{γ/γ - 1}

D. 1 - (1/r)^{γ - 1/ γ}

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The value of one bar (in S. I. units) is equal to

A. 1 × 10² N/m²

B. 1 × 10³ N/m²

C. 1 × 10⁴ N/m²

D. 1 × 10⁵ N/m²

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Which of the following cycles has maximum efficiency?

A. Rankine

B. Stirling

C. Carnot

D. Brayton

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When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is (where ε₁ = Hoop strain, and ε₂ = Longitudinal strain)

A. 2ε₁ - ε₂

B. 2ε₁ + ε₂

C. 2ε₂ - ε₁

D. 2ε₂ + ε₁

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One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.

A. 4/7

B. 11/4

C. 9/7

D. All of these

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Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)

A. cv/ cp =R

B. cp - cv = R

C. cv = R/ γ-1

D. Both (B) and (C)

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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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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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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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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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Which of the following is the correct statement?

A. For a given compression ratio, both Otto and Diesel cycles have the same efficiency.

B. For a given compression ratio, Otto cycle is more efficient than Diesel cycle.

C. For a given compression ratio, Diesel cycle is more efficient than Otto cycle.

D. The efficiency of Otto or Diesel cycle has nothing to do with compression ratio.

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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 change of entropy, when heat is absorbed by the gas, is

A. Positive

B. Negative

C. Positive or negative

D. None of these

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When a gas is heated at constant volume

A. Its temperature will increase

B. Its pressure will increase

C. Both temperature and pressure will increase

D. Neither temperature nor pressure will increase

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The gas constant (R) is equal to the __________ of two specific heats.

A. Sum

B. Difference

C. Product

D. Ratio

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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 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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Otto cycle is also known as

A. Constant pressure cycle

B. Constant volume cycle

C. Constant temperature cycle

D. Constant temperature and pressure cycle

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Petrol is distilled at

A. 65° to 220°C

B. 220° to 345°C

C. 345° to 470°C

D. 470° to 550°C

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If Kh is the torque resisting capacity of a hollow shaft and Ks is that of a solid shaft, of the same material, length and weight. Then,

A. Kh > Ks

B. Kh < Ks

C. Kh = Ks

D. None of these

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In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is

A. More

B. Less

C. Same

D. More/less depending on composition

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The rivets are used for __________ fastenings.

A. Permanent

B. Temporary

C. Semi-permanent

D. None of these

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When a gas is heated at constant pressure

A. Its temperature will increase

B. Its volume will increase

C. Both temperature and volume will increase

D. Neither temperature not volume will increase

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The shape of cantilever for uniformly distributed load will be

A. Straight line

B. Parabolic

C. Elliptical

D. Cubic

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The hard coke is obtained when carbonisation of coal is carried out at

A. 300° to 500°C

B. 500° to 700°C

C. 700° to 900°C

D. 900° to 1100°C

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A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

A. Reversible cycle

B. Irreversible cycle

C. Thermodynamic cycle

D. None of these

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The work ratio of a gas turbine plant is given by

A. (Net work output)/(Workdone by the turbine)

B. (Net work output)/(Heat supplied)

C. (Actual temperature drop)/(Isentropic temperature drop)

D. (Isentropic increase in temperature)/(Actual increase in temperature)

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If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60% and the percentage reduction in area of a specimen with same dimensions made of material 'B' is 40%, then

A. The material A is more ductile than material B

B. The material B is more ductile than material A

C. The ductility of material A and B is equal

D. The material A is brittle and material B is ductile

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Accepted Answer

A. When molecular momentum of the system becomes zero

The absolute zero pressure will be

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called

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

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

The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

The value of one bar (in S. I. units) is equal to

Which of the following cycles has maximum efficiency?

When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is (where ε₁ = Hoop strain, and ε₂ = Longitudinal strain)

One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.

Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)

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

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

The total strain energy stored in a body is termed a

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)

Which of the following is the correct statement?

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

The change of entropy, when heat is absorbed by the gas, is

When a gas is heated at constant volume

The gas constant (R) is equal to the __________ of two specific heats.

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

Otto cycle is also known as

Petrol is distilled at

If Kh is the torque resisting capacity of a hollow shaft and Ks is that of a solid shaft, of the same material, length and weight. Then,

In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is

The rivets are used for __________ fastenings.

When a gas is heated at constant pressure

The shape of cantilever for uniformly distributed load will be

The hard coke is obtained when carbonisation of coal is carried out at

A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

The work ratio of a gas turbine plant is given by

If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60% and the percentage reduction in area of a specimen with same dimensions made of material 'B' is 40%, then

Also checkout

The absolute zero pressure will be

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called

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

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

The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

The value of one bar (in S. I. units) is equal to

Which of the following cycles has maximum efficiency?

When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is (where ε₁ = Hoop strain, and ε₂ = Longitudinal strain)

One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.

Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)

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

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

The total strain energy stored in a body is termed a

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)

Which of the following is the correct statement?

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

The change of entropy, when heat is absorbed by the gas, is

When a gas is heated at constant volume

The gas constant (R) is equal to the __________ of two specific heats.

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

Otto cycle is also known as

Petrol is distilled at

If Kh is the torque resisting capacity of a hollow shaft and Ks is that of a solid shaft, of the same material, length and weight. Then,

In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is

The rivets are used for __________ fastenings.

When a gas is heated at constant pressure

The shape of cantilever for uniformly distributed load will be

The hard coke is obtained when carbonisation of coal is carried out at

A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

The work ratio of a gas turbine plant is given by

If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60% and the percentage reduction in area of a specimen with same dimensions made of material 'B' is 40%, then

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)