A composite shaft consisting of two stepped portions having spring constants K₁ and K₂ is held between two rigid supports at the ends. Its equivalent spring constant is

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A composite shaft consisting of two stepped portions having spring constants K₁ and K₂ is held between two rigid supports at the ends. Its equivalent spring constant is

A. K₁ K₂

B. (K₁ + K₂)/ 2

C. (K₁ + K₂)/ K₁ K₂

D. K₁ K₂/ (K₁ + K₂)

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During which of the following process does heat rejection takes place in Carnot cycle?

A. Isothermal expansion

B. Isentropic expansion

C. Isothermal compression

D. Isentropic compression

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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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Diamond riveted joint can be adopted in the case of following type of joint

A. Butt joint

B. Lap joint

C. Double riveted lap joints

D. All types of joints

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

A. Increasing the internal energy of gas

B. Doing some external work

C. Increasing the internal energy of gas and also for doing some external work

D. None of the above

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Euler's formula holds good only for

A. Short columns

B. Long columns

C. Both short and long columns

D. Weak columns

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The isothermal and adiabatic processes are regarded as

A. Reversible process

B. Irreversible process

C. Reversible or irreversible process

D. None of these

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The capacity of a strained body for doing work on the removal of the straining force, is called

A. Strain energy

B. Resilience

C. Proof resilience

D. Impact energy

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Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

A. Combustion is at constant volume

B. Expansion and compression are isentropic

C. Maximum temperature is higher

D. Heat rejection is lower

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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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An open cycle gas turbine works on

A. Carnot cycle

B. Otto cycle

C. Joule's cycle

D. Stirling cycle

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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 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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A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the

A. Axis of load

B. Perpendicular to the axis of load

C. Maximum moment of inertia

D. Minimum moment of inertia

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The gas in cooling chamber of a closed cycle gas turbine is cooled at

A. Constant volume

B. Constant temperature

C. Constant pressure

D. None of these

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According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.

A. Remains constant

B. Increases

C. Decreases

D. None of these

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The ultimate tensile stress of mild steel compared to ultimate compressive stress is

A. Same

B. More

C. Less

D. Unpredictable

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Which of the following is the correct statement of the 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 impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source.

C. There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy.

D. All of the above

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The process is adiabatic, if the value of n in the equation pvn = C, is

A. 0

B. 1

C. γ

D. ∝

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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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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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The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.

A. One-half

B. One-third

C. Two-third

D. Three-fourth

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Which of the following is the extensive property of a thermodynamic system?

A. Pressure

B. Volume

C. Temperature

D. Density

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When the expansion or compression takes place according to the law pvn = C, the process is known as

A. Isothermal process

B. Adiabatic process

C. Hyperbolic process

D. Polytropic process

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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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The efficiency and work ratio of a simple gas turbine cycle are

A. Low

B. Very low

C. High

D. Very high

Discuss this answer

The oxygen atom is ________ times heavier than the hydrogen atom.

A. 2

B. 8

C. 16

D. 32

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High air-fuel ratio in gas turbines

A. Increases power output

B. Improves thermal efficiency

C. Reduces exhaust temperature

D. Do not damage turbine blades

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In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.

A. Equal to

B. Less than

C. More than

D. None of these

Discuss this answer

Proof resilience per material is known as

A. Resilience

B. Proof resilience

C. Modulus of resilience

D. Toughness

Discuss this answer

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

Discuss this answer

Accepted Answer

A. K₁ K₂

A composite shaft consisting of two stepped portions having spring constants K₁ and K₂ is held between two rigid supports at the ends. Its equivalent spring constant is

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

During which of the following process does heat rejection takes place in Carnot cycle?

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

Diamond riveted joint can be adopted in the case of following type of joint

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

Euler's formula holds good only for

The isothermal and adiabatic processes are regarded as

The capacity of a strained body for doing work on the removal of the straining force, is called

Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

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

An open cycle gas turbine works on

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

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

A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the

The gas in cooling chamber of a closed cycle gas turbine is cooled at

According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.

The ultimate tensile stress of mild steel compared to ultimate compressive stress is

Which of the following is the correct statement of the second law of thermodynamics?

The process is adiabatic, if the value of n in the equation pvn = C, is

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

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)

The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.

Which of the following is the extensive property of a thermodynamic system?

When the expansion or compression takes place according to the law pvn = C, the process is known as

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

The efficiency and work ratio of a simple gas turbine cycle are

The oxygen atom is ________ times heavier than the hydrogen atom.

High air-fuel ratio in gas turbines

In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.

Proof resilience per material is known as

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

Also checkout

A composite shaft consisting of two stepped portions having spring constants K₁ and K₂ is held between two rigid supports at the ends. Its equivalent spring constant is

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

During which of the following process does heat rejection takes place in Carnot cycle?

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

Diamond riveted joint can be adopted in the case of following type of joint

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

Euler's formula holds good only for

The isothermal and adiabatic processes are regarded as

The capacity of a strained body for doing work on the removal of the straining force, is called

Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

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

An open cycle gas turbine works on

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

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

A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the

The gas in cooling chamber of a closed cycle gas turbine is cooled at

According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.

The ultimate tensile stress of mild steel compared to ultimate compressive stress is

Which of the following is the correct statement of the second law of thermodynamics?

The process is adiabatic, if the value of n in the equation pvn = C, is

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

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)

The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.

Which of the following is the extensive property of a thermodynamic system?

When the expansion or compression takes place according to the law pvn = C, the process is known as

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

The efficiency and work ratio of a simple gas turbine cycle are

The oxygen atom is ________ times heavier than the hydrogen atom.

High air-fuel ratio in gas turbines

In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.

Proof resilience per material is known as

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

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)