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

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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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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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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

Discuss this answer

The standard value of atmospheric pressure taken at sea level is

A. 1.013 bar

B. 760 mm of Hg

C. 1013 × 10² N/m²

D. All of these

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For the same compression ratio, the efficiency of dual combustion cycle is

A. Greater than Diesel cycle and less than Otto cycle

B. Less than Diesel cycle and greater than Otto cycle

C. Greater than Diesel cycle

D. Less than Diesel cycle

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If the slenderness ratio for a column is 100, then it is said to be a _________ column.

A. Long

B. Medium

C. Short

D. None of these

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Diesel cycle consists of __________ processes.

A. Two constant volume and two isentropic

B. Two constant pressure and two isentropic

C. Two constant volume and two isothermal

D. One constant pressure, one constant volume and two isentropic

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The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as

A. Dual combustion cycle

B. Diesel cycle

C. Atkinson cycle

D. Rankine cycle

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One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to

A. 800 K

B. 1000 K

C. 1200 K

D. 1400 K

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Kerosene is distilled at

A. 65° to 220°C

B. 220° to 345°C

C. 345° to 470°C

D. 470° to 550°C

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The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

A. More than 50 %

B. 25-50 %

C. 10-25 %

D. Negligible

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A cycle consisting of two isothermal and two isentropic processes, is known as

A. Carnot cycle

B. Stirling cycle

C. Ericsson cycle

D. Joule cycle

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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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The sum of internal energy (U) and the product of pressure and volume (p.v) is known as

A. Workdone

B. Entropy

C. Enthalpy

D. None of these

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One kilowatt is equal to

A. 1 N-m/s

B. 100 N-m

C. 1000 N-m/s

D. 1 × 10⁶ N-m/s

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Stirling and Ericsson cycles are

A. Reversible cycles

B. Irreversible cycles

C. Semi-reversible cycles

D. Adiabatic irreversible cycles

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In a steady flow process, the ratio of

A. Heat transfer is constant

B. Work transfer is constant

C. Mass flow at inlet and outlet is same

D. All of these

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For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

A. Dual cycle, Diesel cycle, Otto cycle

B. Otto cycle, Diesel cycle, Dual cycle

C. Dual cycle, Otto cycle, Diesel cycle

D. Diesel cycle, Otto cycle, Dual cycle

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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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A coil is cut into two halves, the stiffness of cut coil will be

A. Double

B. Half

C. Same

D. None of these

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The maximum stress produced in a bar of tapering section is at

A. Smaller end

B. Larger end

C. Middle

D. Anywhere

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One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.

A. 9/7

B. 11/7

C. 7/4

D. 1/4

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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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Which of the following is the correct statement?

A. For a given compression ratio, both Otto and Diesel cycles have the same efficiency.

B. For a given compression ratio, Otto cycle is more efficient than Diesel cycle.

C. For a given compression ratio, Diesel cycle is more efficient than Otto cycle.

D. The efficiency of Otto or Diesel cycle has nothing to do with compression ratio.

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The value of modulus of elasticity for mild steel is of the order of

A. 2.1 × 10⁵ kg/cm²

B. 2.1 × 10⁶ kg/cm²

C. 2.1 × 10⁷ kg/cm²

D. 0.1 × 10⁶ kg/cm²

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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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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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Coke is produced

A. When coal is first dried and then crushed to a fine powder by pulverising machine

B. From the finely ground coal by moulding under pressure with or without a binding material

C. When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

D. By heating wood with a limited supply of air to a temperature not less than 280°C

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The gas constant (R) is equal to the __________ of two specific heats.

A. Sum

B. Difference

C. Product

D. Ratio

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Modular ratio of two materials is the ratio of

A. Strains

B. Stress and strain

C. Shear stress and shear strain

D. Moduli and elasticity

Discuss this answer

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

A. 50 %

B. 25 %

C. 20 %

D. 30 %

Discuss this answer

Accepted Answer

C. 1 - (T₂/T₁)

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

Correct Answer :

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Related Questions

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

High air-fuel ratio in gas turbines

The standard value of atmospheric pressure taken at sea level is

For the same compression ratio, the efficiency of dual combustion cycle is

If the slenderness ratio for a column is 100, then it is said to be a _________ column.

Diesel cycle consists of __________ processes.

The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as

One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to

Kerosene is distilled at

The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

A cycle consisting of two isothermal and two isentropic processes, is known as

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.

The sum of internal energy (U) and the product of pressure and volume (p.v) is known as

One kilowatt is equal to

Stirling and Ericsson cycles are

In a steady flow process, the ratio of

For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

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 coil is cut into two halves, the stiffness of cut coil will be

The maximum stress produced in a bar of tapering section is at

One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.

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

Which of the following is the correct statement?

The value of modulus of elasticity for mild steel is of the order of

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

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

Coke is produced

The gas constant (R) is equal to the __________ of two specific heats.

Modular ratio of two materials is the ratio of

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

Also checkout

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

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

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

High air-fuel ratio in gas turbines

The standard value of atmospheric pressure taken at sea level is

For the same compression ratio, the efficiency of dual combustion cycle is

If the slenderness ratio for a column is 100, then it is said to be a _________ column.

Diesel cycle consists of __________ processes.

The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as

One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to

Kerosene is distilled at

The percentage reduction in area of a cast iron specimen during tensile test would be of the order of

A cycle consisting of two isothermal and two isentropic processes, is known as

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.

The sum of internal energy (U) and the product of pressure and volume (p.v) is known as

One kilowatt is equal to

Stirling and Ericsson cycles are

In a steady flow process, the ratio of

For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

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)

A coil is cut into two halves, the stiffness of cut coil will be

The maximum stress produced in a bar of tapering section is at

One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.

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

Which of the following is the correct statement?

The value of modulus of elasticity for mild steel is of the order of

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

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

Coke is produced

The gas constant (R) is equal to the __________ of two specific heats.

Modular ratio of two materials is the ratio of

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

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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)