In an ideal gas turbine plant, it is assumed that the compression and expansion processes are

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In an ideal gas turbine plant, it is assumed that the compression and expansion processes are

A. Isothermal

B. Isentropic

C. Polytropic

D. None of these

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The entropy __________ in an irreversible cyclic process.

A. Remains constant

B. Decreases

C. Increases

D. None of these

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The heat supplied to the gas at constant volume is (where m = Mass of gas, c_v = Specific heat at constant volume, c_p = Specific heat at constant pressure, T₂ - T₁ = Rise in temperature, and R = Gas constant)

A. mR (T₂ - T₁)

B. mc_v (T₂ - T₁)

C. mc_p (T₂ - T₁)

D. mc_p (T₂ + T₁)

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Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

A. It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.

B. It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

C. It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.

D. None of the above

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

A. Increases the internal energy of the gas and increases the temperature of the gas

B. Does some external work during expansion

C. Both (A) and (B)

D. None of these

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Percentage reduction of area in performing tensile test on cast iron may be of the order of

A. 50 %

B. 25 %

C. 0 %

D. 15 %

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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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When it is indicated that a member is elastic, it means that when force is applied, it will

A. Not deform

B. Be safest

C. Stretch

D. Not stretch

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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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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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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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The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is

A. 0.086

B. 1.086

C. 1.086

D. 4.086

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Flow stress corresponds to

A. Fluids in motion

B. Breaking point

C. Plastic deformation of solids

D. Rupture stress

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If a part is constrained to move and heated, it will develop

A. Principal stress

B. Tensile stress

C. Compressive stress

D. Shear stress

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Which of the following cycles has maximum efficiency?

A. Rankine

B. Stirling

C. Carnot

D. Brayton

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The deformation of a bar under its own weight is _________ the deformation, if the same body is subjected to a direct load equal to weight of the body.

A. Equal to

B. Half

C. Double

D. Quadruple

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According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.

A. Equal to

B. Less than

C. More than

D. None of these

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When a perfect gas is expanded through an aperture of minute dimensions, the process is known as

A. Isothermal process

B. Adiabatic process

C. Free expansion process

D. Throttling process

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The extension of a circular bar tapering uniformly from diameter d₁ at one end to diameter d₂ at the other end and subjected to an axial pull of P is given by

A. δl = 4PE/ πl²

B. δl = 4πld²/PE

C. δl = 4Pl/πEd₁d₂

D. δl = 4PlE/ πd₁d₂

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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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Workdone in a free expansion process is

A. Zero

B. Minimum

C. Maximum

D. Positive

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A cantilever beam is one which is

A. Fixed at both ends

B. Fixed at one end and free at the other end

C. Supported at its ends

D. Supported on more than two supports

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The pull required to crush the rivet per pitch length is

A. p.t.σ_t

B. d.t.σ_c

C. π/4 × d² × σ_t

D. π/4 × d² × σ_c

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One Joule (J) is equal to

A. 1 N-m

B. 1 kN-m

C. 10 N-m/s

D. 10 kN-m/s

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The temperature at which the volume of a gas becomes zero is called

A. Absolute scale of temperature

B. Absolute zero temperature

C. Absolute temperature

D. None of these

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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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For which material the Poisson's ratio is more than unity

A. Steel

B. Copper

C. Aluminium

D. None of the above

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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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An adiabatic process is one in which

A. No heat enters or leaves the gas

B. The temperature of the gas changes

C. The change in internal energy is equal to the mechanical workdone

D. All of the above

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The efficiency of Joule cycle is

A. Greater than Carnot cycle

B. Less than Carnot cycle

C. Equal to Carnot cycle

D. None of these

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A molecule consisting of one atom is known as

A. Mono-atomic

B. Di-atomic

C. Tri-atomic

D. Poly-atomic

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Accepted Answer

B. Isentropic

In an ideal gas turbine plant, it is assumed that the compression and expansion processes are

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

The entropy __________ in an irreversible cyclic process.

The heat supplied to the gas at constant volume is (where m = Mass of gas, c_v = Specific heat at constant volume, c_p = Specific heat at constant pressure, T₂ - T₁ = Rise in temperature, and R = Gas constant)

Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

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

Percentage reduction of area in performing tensile test on cast iron may be of the order of

Modulus of rigidity may be defined as the ratio of

When it is indicated that a member is elastic, it means that when force is applied, it will

The rivets are used for __________ fastenings.

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

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

The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is

Flow stress corresponds to

If a part is constrained to move and heated, it will develop

Which of the following cycles has maximum efficiency?

The deformation of a bar under its own weight is _________ the deformation, if the same body is subjected to a direct load equal to weight of the body.

According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.

When a perfect gas is expanded through an aperture of minute dimensions, the process is known as

The extension of a circular bar tapering uniformly from diameter d₁ at one end to diameter d₂ at the other end and subjected to an axial pull of P is given by

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

Workdone in a free expansion process is

A cantilever beam is one which is

The pull required to crush the rivet per pitch length is

One Joule (J) is equal to

The temperature at which the volume of a gas becomes zero is called

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

For which material the Poisson's ratio is more than unity

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

An adiabatic process is one in which

The efficiency of Joule cycle is

A molecule consisting of one atom is known as

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In an ideal gas turbine plant, it is assumed that the compression and expansion processes are

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

The entropy __________ in an irreversible cyclic process.

The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant volume, cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature, and R = Gas constant)

Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

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

Percentage reduction of area in performing tensile test on cast iron may be of the order of

Modulus of rigidity may be defined as the ratio of

When it is indicated that a member is elastic, it means that when force is applied, it will

The rivets are used for __________ fastenings.

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

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

The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is

Flow stress corresponds to

If a part is constrained to move and heated, it will develop

Which of the following cycles has maximum efficiency?

The deformation of a bar under its own weight is _________ the deformation, if the same body is subjected to a direct load equal to weight of the body.

According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.

When a perfect gas is expanded through an aperture of minute dimensions, the process is known as

The extension of a circular bar tapering uniformly from diameter d₁ at one end to diameter d₂ at the other end and subjected to an axial pull of P is given by

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

Workdone in a free expansion process is

A cantilever beam is one which is

The pull required to crush the rivet per pitch length is

One Joule (J) is equal to

The temperature at which the volume of a gas becomes zero is called

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

For which material the Poisson's ratio is more than unity

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

An adiabatic process is one in which

The efficiency of Joule cycle is

A molecule consisting of one atom is known as

Also checkout

The heat supplied to the gas at constant volume is (where m = Mass of gas, c_v = Specific heat at constant volume, c_p = Specific heat at constant pressure, T₂ - T₁ = Rise in temperature, and R = Gas constant)