An open system is one in which

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An open system is one in which

A. Heat and work crosses the boundary of the system, but the mass of the working substance does not crosses the boundary of the system

B. Mass of the working substance crosses the boundary of the system but the heat and work does not crosses the boundary of the system

C. Both the heat and work as well as mass of the working substance crosses the boundary of the system

D. Neither the heat and work nor the mass of the working substance crosses the boundary of the system

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The efficiency of Diesel cycle increases with

A. Decrease in cut-off

B. Increase in cut-off

C. Constant cut-off

D. None of these

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The intensity of stress which causes unit strain is called

A. Unit mass

B. Modulus of rigidity

C. Bulk modulus

D. Modulus of Elasticity

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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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The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.

A. Greater than

B. Less than

C. Equal to

D. None of these

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An open system is one in which

A. Heat and work crosses the boundary of the system, but the mass of the working substance does not crosses the boundary of the system

B. Mass of the working substance crosses the boundary of the system but the heat and work does not crosses the boundary of the system

C. Both the heat and work as well as mass of the working substance crosses the boundary of the system

D. Neither the heat and work nor the mass of the working substance crosses the boundary of the system

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The safe twisting moment for a compound shaft is equal to the

A. Maximum calculated value

B. Minimum calculated value

C. Mean value

D. Extreme value

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If the rivets in adjacent rows are staggered and the outermost row has only one rivets, the arrangement of the rivets is called

A. Chain riveting

B. Zigzag riveting

C. Diamond riveting

D. Crisscross riveting

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The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always __________ one.

A. Equal to

B. Less than

C. Greater than

D. None of these

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A cycle consisting of two adiabatic and two constant pressure processes is known as

A. Otto cycle

B. Ericsson cycle

C. Joule cycle

D. Stirling cycle

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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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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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In the torsion equation T/J = τ/r = Gθ/ L, the term J/R is called

A. Shear modulus

B. Section modulus

C. Polar modulus

D. None of these

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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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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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A column that fails due to direct stress, is called

A. Short column

B. Long column

C. Weak column

D. Medium column

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The following cycle is used for air craft refrigeration

A. Brayton cycle

B. Joule cycle

C. Carnot cycle

D. Reversed Brayton cycle

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The weakest section of a diamond riveting is the section which passes through

A. The first row

B. The second row

C. The central row

D. One rivet hole of the end row

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The mass of excess air supplied is equal to

A. (23/100) × Mass of excess carbon

B. (23/100) × Mass of excess oxygen

C. (100/23) × Mass of excess carbon

D. (100/23) × Mass of excess oxygen

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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 relation between equivalent length (L) and actual length (l) of a column for both ends fixed is

A. L = l/2

B. L = l/√2

C. L = l

D. L = 2l

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The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its maximum crushing stress of punch, is equal to (where t = Thickness of the plate)

A. t

B. 2t

C. 4t

D. 8t

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The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

A. Boyle's law

B. Charles' law

C. Gay-Lussac law

D. All of these

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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

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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 processes occuring in open system which permit the transfer of mass to and from the system, are known as

A. Flow processes

B. Non-flow processes

C. Adiabatic processes

D. None of these

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A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as

A. Chain riveted joint

B. Diamond riveted joint

C. Crisscross riveted joint

D. Zigzag riveted joint

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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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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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The ratio of lateral strain to the linear strain within elastic limit is known as

A. Young's modulus

B. Bulk modulus

C. Modulus of rigidity

D. Poisson's ratio

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A pressure vessel is said to be a thick shell, when

A. It is made of thick sheets

B. The internal pressure is very high

C. The ratio of wall thickness of the vessel to its diameter is less than 1/10.

D. The ratio of wall thickness of the vessel to its diameter is greater than 1/10.

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Accepted Answer

C. Both the heat and work as well as mass of the working substance crosses the boundary of the system

An open system is one in which

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Related Questions

The efficiency of Diesel cycle increases with

The intensity of stress which causes unit strain is called

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

The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.

An open system is one in which

The safe twisting moment for a compound shaft is equal to the

If the rivets in adjacent rows are staggered and the outermost row has only one rivets, the arrangement of the rivets is called

The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always __________ one.

A cycle consisting of two adiabatic and two constant pressure processes is known as

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

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

In the torsion equation T/J = τ/r = Gθ/ L, the term J/R is called

In an extensive property of a thermodynamic system

The pull required to crush the rivet per pitch length is

A column that fails due to direct stress, is called

The following cycle is used for air craft refrigeration

The weakest section of a diamond riveting is the section which passes through

The mass of excess air supplied is equal to

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

The relation between equivalent length (L) and actual length (l) of a column for both ends fixed is

The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its maximum crushing stress of punch, is equal to (where t = Thickness of the plate)

The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

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

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 processes occuring in open system which permit the transfer of mass to and from the system, are known as

A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as

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

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

The ratio of lateral strain to the linear strain within elastic limit is known as

A pressure vessel is said to be a thick shell, when

Also checkout

An open system is one in which

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

The efficiency of Diesel cycle increases with

The intensity of stress which causes unit strain is called

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

The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.

An open system is one in which

The safe twisting moment for a compound shaft is equal to the

If the rivets in adjacent rows are staggered and the outermost row has only one rivets, the arrangement of the rivets is called

The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always __________ one.

A cycle consisting of two adiabatic and two constant pressure processes is known as

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

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

In the torsion equation T/J = τ/r = Gθ/ L, the term J/R is called

In an extensive property of a thermodynamic system

The pull required to crush the rivet per pitch length is

A column that fails due to direct stress, is called

The following cycle is used for air craft refrigeration

The weakest section of a diamond riveting is the section which passes through

The mass of excess air supplied is equal to

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

The relation between equivalent length (L) and actual length (l) of a column for both ends fixed is

The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its maximum crushing stress of punch, is equal to (where t = Thickness of the plate)

The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

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

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 processes occuring in open system which permit the transfer of mass to and from the system, are known as

A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as

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

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

The ratio of lateral strain to the linear strain within elastic limit is known as

A pressure vessel is said to be a thick shell, when

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)