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4

The bending moment at a point on a beam is the algebraic ________ of all the moments on either side of the point.

A. Sum

B. Difference

C. Multiplication

D. None of the above

Correct Answer :

A. Sum


Related Questions

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4

Which of the following is an irreversible cycle?

A. Carnot

B. Stirling

C. Ericsson

D. None of the above

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4

A circular shaft fixed at, A has diameter D for half of its length and diameter D/2 over the other half, as shown in the below figure. If the rotation of B relative to A is 0.1 radian, the rotation of C relative to B will be

A. 0.4 radian

B. 0.8 radian

C. 1.6 radian

D. 3.2 radian

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4

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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4

The absolute zero pressure can be attained at a temperature of

A. 0°C

B. 273°C

C. 273 K

D. None of these

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4

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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4

A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum shear stress will be

A. -100 MPa

B. 250 MPa

C. 300 MPa

D. 400 MPa

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4

When two plates are butt together and riveted with cover plates with two rows of rivets, the joint is known as

A. Lap joint

B. Butt joint

C. Single riveted single cover butt joint

D. Double riveted double cover butt joint

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4

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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4

The strain energy stored in a solid circular shaft subjected to shear stress (τ), is: (Where G = Modulus of rigidity for the shaft material)

A. τ²/ 2G × Volume of shaft

B. τ/ 2G × Volume of shaft

C. τ²/ 4G × Volume of shaft

D. τ/ 4G × Volume of shaft

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4

The columns whose slenderness ratio is less than 80, are known as

A. Short columns

B. Long columns

C. Weak columns

D. Medium columns

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4

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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4

The bending moment at a point on a beam is the algebraic ________ of all the moments on either side of the point.

A. Sum

B. Difference

C. Multiplication

D. None of the above

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4

For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.

A. Greater than

B. Less than

C. Equal to

D. None of these

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4

The radius of the Mohrs circle in the given figure is equal to

A. Sum of two principal stresses

B. Difference of two principal stresses

C. Half the sum of two principal stresses

D. Half the difference of two principal stresses

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4

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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4

The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).

A. Less than

B. Equal to

C. More than

D. None of these

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4

An adiabatic process is one in which

A. No heat enters or leaves the gas

B. The temperature of the gas changes

C. The change in internal energy is equal to the mechanical workdone

D. All of the above

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4

An open cycle gas turbine works on

A. Carnot cycle

B. Otto cycle

C. Joule's cycle

D. Stirling cycle

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4

The compression ratio for petrol engines is

A. 3 to 6

B. 5 to 8

C. 10 to 20

D. 15 to 30

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4

The lower layer 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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4

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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4

A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as

A. Carnot cycle

B. Stirling cycle

C. Otto cycle

D. Diesel cycle

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4

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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4

The shape of cantilever for uniformly distributed load will be

A. Straight line

B. Parabolic

C. Elliptical

D. Cubic

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4

A cantilever beam is one which is

A. Fixed at both ends

B. Fixed at one end and free at the other end

C. Supported at its ends

D. Supported on more than two supports

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4

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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4

Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)

A. cv/ cp =R

B. cp - cv = R

C. cv = R/ γ-1

D. Both (B) and (C)

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4

The property of a material which allows it to be drawn into a smaller section is called

A. Plasticity

B. Ductility

C. Elasticity

D. Malleability

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4

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

A. Sum

B. Difference

C. Product

D. Ratio

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4

The change of entropy, when heat is absorbed by the gas, is

A. Positive

B. Negative

C. Positive or negative

D. None of these