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

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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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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 neutral axis of the cross-section a beam is that axis at which the bending stress is

A. Zero

B. Minimum

C. Maximum

D. Infinity

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When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as

A. Thermodynamic law

B. Thermodynamic process

C. Thermodynamic cycle

D. None of these

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Which of the following gas has a minimum molecular mass?

A. Oxygen

B. Nitrogen

C. Hydrogen

D. Methane

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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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When the gas is heated at constant pressure, the heat supplied

A. Increases the internal energy of the gas

B. Increases the temperature of the gas

C. Does some external work during expansion

D. Both (B) and (C)

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The layer at the centre of gravity of the beam as shown in the below figure, will be

A. In tension

B. In compression

C. Neither in tension nor in compression

D. None of these

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The mass of flue gas per kg of fuel is the ratio of the

A. Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel

B. Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas

C. Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel

D. Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas

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For a beam, as shown in the below figure, when the load W is applied in the centre of the beam, the maximum deflection is

A. Wl3 / 48EI

B. 5Wl3 / 384EI

C. Wl3 / 392EI

D. Wl3 / 384EI

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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

A. Creeping

B. Yielding

C. Breaking

D. Plasticity

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A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m, and then the hoop stress will be

A. 30 MN/m²

B. 50 MN/m²

C. 100 MN/m²

D. 200 MN/m²

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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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The property of a material which allows it to be drawn into a smaller section is called

A. Plasticity

B. Ductility

C. Elasticity

D. Malleability

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The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.

A. Zeroth

B. First

C. Second

D. Third

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Strain is equal to (where l = Original length, and δl = Change in length)

A. l/δl

B. δl/l

C. l.δl

D. l + δl

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In an extensive property of a thermodynamic system

A. Extensive heat is transferred

B. Extensive work is done

C. Extensive energy is utilised

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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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.

A. 0°

B. 30°

C. 45°

D. 90°

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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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Brayton cycle consists' of following four processes

A. Two isothermals and two isentropic

B. Two isentropic and two constant volumes

C. Two isentropic, one constant volume and one constant pressure

D. Two isentropic and two constant pressures

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A simply supported beam with a gradually varying load from zero at B and w per unit length at A is shown in the below figure. The shear force at B is equal to

A. wl/6

B. wl/3

C. wl

D. 2wl/3

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The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

A. Cracking

B. Carbonisation

C. Fractional distillation

D. Full distillation

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The heat and mechanical energies are mutually convertible. This statement was established by

A. Boyle

B. Charles

C. Joule

D. None of these

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Which is the incorrect statement about Carnot cycle?

A. It is used as the alternate standard of comparison of all heat engines.

B. All the heat engines are based on Carnot cycle.

C. It provides concept of maximising work output between the two temperature limits.

D. All of the above

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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.

A. wl/4

B. wl/2

C. wl

D. wl²/2

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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 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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Which of the following is an irreversible cycle?

A. Carnot

B. Stirling

C. Ericsson

D. None of the above

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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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The absolute zero temperature is taken as

A. 237°C

B. -273°C

C. -237°C

D. 273°C

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Accepted Answer

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

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

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Related Questions

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 neutral axis of the cross-section a beam is that axis at which the bending stress is

When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as

Which of the following gas has a minimum molecular mass?

The total strain energy stored in a body is termed a

When the gas is heated at constant pressure, the heat supplied

The layer at the centre of gravity of the beam as shown in the below figure, will be

The mass of flue gas per kg of fuel is the ratio of the

For a beam, as shown in the below figure, when the load W is applied in the centre of the beam, the maximum deflection is

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

A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m, and then the hoop stress will be

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

The property of a material which allows it to be drawn into a smaller section is called

The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.

Strain is equal to (where l = Original length, and δl = Change in length)

In an extensive property of a thermodynamic system

When a gas is heated at constant pressure

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.

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

Brayton cycle consists' of following four processes

A simply supported beam with a gradually varying load from zero at B and w per unit length at A is shown in the below figure. The shear force at B is equal to

The heat and mechanical energies are mutually convertible. This statement was established by

Which is the incorrect statement about Carnot cycle?

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.

In an isothermal process,

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

Which of the following is an irreversible cycle?

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

The absolute zero temperature is taken as

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

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

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 neutral axis of the cross-section a beam is that axis at which the bending stress is

When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as

Which of the following gas has a minimum molecular mass?

The total strain energy stored in a body is termed a

When the gas is heated at constant pressure, the heat supplied

The layer at the centre of gravity of the beam as shown in the below figure, will be

The mass of flue gas per kg of fuel is the ratio of the

For a beam, as shown in the below figure, when the load W is applied in the centre of the beam, the maximum deflection is

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

A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m, and then the hoop stress will be

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

The property of a material which allows it to be drawn into a smaller section is called

The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.

Strain is equal to (where l = Original length, and δl = Change in length)

In an extensive property of a thermodynamic system

When a gas is heated at constant pressure

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.

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

Brayton cycle consists' of following four processes

A simply supported beam with a gradually varying load from zero at B and w per unit length at A is shown in the below figure. The shear force at B is equal to

The heat and mechanical energies are mutually convertible. This statement was established by

Which is the incorrect statement about Carnot cycle?

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.

In an isothermal process,

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

Which of the following is an irreversible cycle?

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

The absolute zero temperature is taken as

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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)