The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)

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The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)

A. π /4 × τ × D³

B. π /16 × τ × D³

C. π /32 × τ × D³

D. π /64 × τ × D³

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In a uniform bar, supported at one end in position, the maximum stress under self weight of bar shall occur at the

A. Middle of bar

B. Supported end

C. Bottom end

D. None of these

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The pull required to tear off the plate per pitch length is (where p = Pitch of rivets, t = Thickness of plates, and σt, τ and σc = Permissible tensile, shearing and crushing stresses respectively)

A. (p - 2d) t × σ_c

B. (p - d) t × τ

C. (p - d) t × σ_t

D. (2p - d) t × σ_t

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Which of the following gas has the highest calorific value?

A. Coal gas

B. Producer gas

C. Mond gas

D. Blast furnace gas

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If the value of n = 0 in the equation pvn = C, then the process is called

A. Constant volume process

B. Adiabatic process

C. Constant pressure process

D. Isothermal process

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A definite area or a space where some thermodynamic process takes place is known as

A. Thermodynamic system

B. Thermodynamic cycle

C. Thermodynamic process

D. Thermodynamic law

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The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as

A. Law of equipartition of energy

B. Law of conservation of energy

C. Law of degradation of energy

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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A steel bar of 5 mm is heated from 25°C to 45°C and it is free to expand. The bar will induce

A. No stress

B. Shear stress

C. Tensile stress

D. Compressive stress

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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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When a rectangular beam is loaded transversely, the maximum compressive stress is developed on the

A. Top layer

B. Bottom layer

C. Neutral axis

D. Every cross-section

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A cylindrical section having no joint is known as

A. Joint less section

B. Homogeneous section

C. Perfect section

D. Seamless section

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The change in the unit volume of a material under tension with increase in its Poisson's ratio will

A. Increase

B. Decrease

C. Remain same

D. Increase initially and then decrease

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The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

A. pv = mRT

B. pv = RTm

C. pvm = C

D. pv = (RT)m

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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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The natural solid fuel is

A. Wood

B. Coke

C. Anthracite coal

D. Pulverised coal

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The maximum shear stress, in the given figure, is equal to __________ of the Mohr's circle.

A. Radius

B. Diameter

C. Circumference

D. Area

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The throttling process is __________ process.

A. Reversible

B. Irreversible

C. Reversible or irreversible

D. None of these

Discuss this answer

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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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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The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

A. (T₁/T₂) - 1

B. 1 - (T₁/T₂)

C. 1 - (T₂/T₁)

D. 1 + (T₂/T₁)

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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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Select the wrong statement

A. A Joule cycle consists of two constant volume and two isentropic processes.

B. An Otto cycle consists of two constant volume and two isentropic processes.

C. An Ericsson cycle consists of two constant pressure and two isothermal processes.

D. All of the above

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Which of the following is a proper sequence?

A. Proportional limit, elastic limit, yielding, failure

B. Elastic limit, proportional limit, yielding, failure

C. Yielding, proportional limit, elastic limit, failure

D. None of the above

Discuss this answer

In a tensile test, near the elastic limit zone, the

A. Tensile strain increases more quickly

B. Tensile strain decreases more quickly

C. Tensile strain increases in proportion to the stress

D. Tensile strain decreases in proportion to the stress

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The energy absorbed in a body, when it is strained within the elastic limits, is known as

A. Strain energy

B. Resilience

C. Proof resilience

D. Modulus of resilience

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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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A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

A. Same

B. Lower

C. Higher

D. None of these

Discuss this answer

According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.

A. Equal to

B. Directly proportional to

C. Inversely proportional to

D. None of these

Discuss this answer

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}

Discuss this answer

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

Discuss this answer

Accepted Answer

B. π /16 × τ × D³

The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

In a uniform bar, supported at one end in position, the maximum stress under self weight of bar shall occur at the

The pull required to tear off the plate per pitch length is (where p = Pitch of rivets, t = Thickness of plates, and σt, τ and σc = Permissible tensile, shearing and crushing stresses respectively)

Which of the following gas has the highest calorific value?

If the value of n = 0 in the equation pvn = C, then the process is called

A definite area or a space where some thermodynamic process takes place is known as

The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as

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 steel bar of 5 mm is heated from 25°C to 45°C and it is free to expand. The bar will induce

The efficiency of Carnot cycle is maximum for

When a rectangular beam is loaded transversely, the maximum compressive stress is developed on the

A cylindrical section having no joint is known as

The change in the unit volume of a material under tension with increase in its Poisson's ratio will

The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

The most probable velocity of the gas molecules is given by

The natural solid fuel is

The maximum shear stress, in the given figure, is equal to __________ of the Mohr's circle.

The throttling process is __________ process.

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

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

The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

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

Select the wrong statement

Which of the following is a proper sequence?

In a tensile test, near the elastic limit zone, the

The energy absorbed in a body, when it is strained within the elastic limits, is known as

Which of the following statement is correct?

A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.

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

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

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The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

In a uniform bar, supported at one end in position, the maximum stress under self weight of bar shall occur at the

The pull required to tear off the plate per pitch length is (where p = Pitch of rivets, t = Thickness of plates, and σt, τ and σc = Permissible tensile, shearing and crushing stresses respectively)

Which of the following gas has the highest calorific value?

If the value of n = 0 in the equation pvn = C, then the process is called

A definite area or a space where some thermodynamic process takes place is known as

The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as

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)

A steel bar of 5 mm is heated from 25°C to 45°C and it is free to expand. The bar will induce

The efficiency of Carnot cycle is maximum for

When a rectangular beam is loaded transversely, the maximum compressive stress is developed on the

A cylindrical section having no joint is known as

The change in the unit volume of a material under tension with increase in its Poisson's ratio will

The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

The most probable velocity of the gas molecules is given by

The natural solid fuel is

The maximum shear stress, in the given figure, is equal to __________ of the Mohr's circle.

The throttling process is __________ process.

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

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

The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

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

Select the wrong statement

Which of the following is a proper sequence?

In a tensile test, near the elastic limit zone, the

The energy absorbed in a body, when it is strained within the elastic limits, is known as

Which of the following statement is correct?

A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.

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

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

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)