The value of 1 mm of Hg is equal to

Question

The value of 1 mm of Hg is equal to

A. 1.333 N/m²

B. 13.33 N/m²

C. 133.3 N/m²

D. 1333 N/m²

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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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In a free expansion process,

A. W_{1 - 2} = 0

B. Q_{1 - 2} = 0

C. dU = 0

D. All of these

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The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of

A. 0.224 litres

B. 2.24 litres

C. 22.4 litres

D. 224 litres

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The work ratio of simple gas turbine cycle depends upon

A. Maximum cycle temperature

B. Minimum cycle temperature

C. Pressure ratio

D. All of these

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Which of the following is correct?

A. Absolute pressure = Gauge pressure + Atmospheric pressure

B. Gauge pressure = Absolute pressure + Atmospheric pressure

C. Atmospheric pressure = Absolute pressure + Gauge pressure

D. Absolute pressure = Gauge pressure - Atmospheric pressure

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When the gas is cooled at constant pressure,

A. Its temperature increases but volume decreases

B. Its volume increases but temperature decreases

C. Both temperature and volume increases

D. Both temperature and volume decreases

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Within elastic limit, stress is

A. Inversely proportional to strain

B. Directly proportional to strain

C. Square root of strain

D. Equal to strain

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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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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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The main cause for the irreversibility is

A. Mechanical and fluid friction

B. Unrestricted expansion

C. Heat transfer with a finite temperature difference

D. All of the above

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Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as

A. Zeroth law of thermodynamics

B. First law of thermodynamics

C. Second law of thermodynamics

D. Kinetic theory of gases

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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?

A. The heat and work are boundary phenomena

B. The heat and work represent the energy crossing the boundary of the system

C. The heat and work are path functions

D. All of the above

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In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be

A. Increase key length

B. Increase key depth

C. Increase key width

D. Double all the dimensions

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The efficiency of Diesel cycle approaches to Otto cycle efficiency when

A. Cut-off is increased

B. Cut-off is decreased

C. Cut-off is zero

D. Cut-off is constant

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

A. Pressure

B. Volume

C. Temperature

D. Density

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One kg of carbon monoxide requires 4/7 kg of oxygen and produces

A. 11/3 kg of carbon dioxide gas

B. 7/3 kg of carbon monoxide gas

C. 11/7 kg of carbon dioxide gas

D. 8/3 kg of carbon monoxide gas

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The buckling load for a given material depends on

A. Slenderness ratio and area of cross-section

B. Poisson's ratio and modulus of elasticity

C. Slenderness ratio and modulus of elasticity

D. Slenderness ratio, area of cross-section and modulus of elasticity

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Mond gas is obtained by

A. Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast

B. Carbonisation of bituminous coal

C. Passing steam over incandescent coke

D. Passing air and a large amount of steam over waste coal at about 650°C

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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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Which of the following statement is wrong?

A. The closed cycle gas turbine plants are external combustion plants.

B. In the closed cycle gas turbine, the pressure range depends upon the atmospheric pressure.

C. The advantage of efficient internal combustion is eliminated as the closed cycle has an external surface.

D. In open cycle gas turbine, atmosphere acts as a sink and no coolant is required.

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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 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 maximum tangential stress in a thick cylindrical shell is always _________ the internal pressure acting on the shell.

A. Equal to

B. Less than

C. Greater than

D. None of these

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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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The fuel mostly used in blast furnace for extracting pig iron from iron ores is

A. Hard coke

B. Soft coke

C. Pulverised coal

D. Bituminous coal

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Strain re-setters are used to

A. Measure shear strain

B. Measure linear strain

C. Measure volumetric strain

D. Relieve strain

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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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The bending stress in a beam is _________ section modulus.

A. Inversely proportional to two times

B. Directly proportional to

C. Inversely proportional to

D. None of these

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Accepted Answer

C. 133.3 N/m²

The value of 1 mm of Hg is equal to

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

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

In a free expansion process,

The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of

The work ratio of simple gas turbine cycle depends upon

Which of the following is correct?

When the gas is cooled at constant pressure,

Within elastic limit, stress is

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

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

The main cause for the irreversibility is

Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement 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)

Which of the following statement is correct?

In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be

The efficiency of Diesel cycle approaches to Otto cycle efficiency when

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

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

One kg of carbon monoxide requires 4/7 kg of oxygen and produces

The buckling load for a given material depends on

Mond gas is obtained by

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

Which of the following statement is wrong?

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

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

The maximum tangential stress in a thick cylindrical shell is always _________ the internal pressure acting on the shell.

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

The fuel mostly used in blast furnace for extracting pig iron from iron ores is

Strain re-setters are used to

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

The bending stress in a beam is _________ section modulus.

Also checkout

The value of 1 mm of Hg is equal to

Correct Answer :

Show all Strength of Materials MCQ

Related Questions

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

In a free expansion process,

The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of

The work ratio of simple gas turbine cycle depends upon

Which of the following is correct?

When the gas is cooled at constant pressure,

Within elastic limit, stress is

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

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

The main cause for the irreversibility is

Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement 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)

Which of the following statement is correct?

In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be

The efficiency of Diesel cycle approaches to Otto cycle efficiency when

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

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

One kg of carbon monoxide requires 4/7 kg of oxygen and produces

The buckling load for a given material depends on

Mond gas is obtained by

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

Which of the following statement is wrong?

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

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

The maximum tangential stress in a thick cylindrical shell is always _________ the internal pressure acting on the shell.

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

The fuel mostly used in blast furnace for extracting pig iron from iron ores is

Strain re-setters are used to

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

The bending stress in a beam is _________ section modulus.

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)