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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

Correct Answer :

B. 2.1 × 10⁶ kg/cm²


Related Questions

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4

Which of the following is the correct statement?

A. All the reversible engines have the same efficiency.

B. All the reversible and irreversible engines have the same efficiency.

C. Irreversible engines have maximum efficiency.

D. All engines are designed as reversible in order to obtain maximum efficiency.

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4

The unit of Young's modulus is

A. mm/mm

B. kg/cm

C. Kg

D. kg/cm²

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4

The compression ratio is the ratio of

A. Swept volume to total volume

B. Total volume to swept volume

C. Swept volume to clearance volume

D. Total volume to clearance volume

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4

The efficiency of Carnot cycle is maximum for

A. Gas engine

B. Petrol engine

C. Steam engine

D. Reversible engine

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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

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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4

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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4

In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called

A. Creeping

B. Yielding

C. Breaking

D. Plasticity

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4

A closely-coiled helical spring is cut into two halves. The stiffness of the resulting spring will be

A. Same

B. Double

C. Half

D. One-fourth

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4

A cycle consisting of __________ and two isothermal processes is known as Stirling cycle.

A. Two constant pressure

B. Two constant volume

C. Two isentropic

D. One constant pressure, one constant volume

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4

A molecule consisting of one atom is known as

A. Mono-atomic

B. Di-atomic

C. Tri-atomic

D. Poly-atomic

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4

The distance between the centres of the rivets in adjacent rows of zigzag riveted joint is known as

A. Pitch

B. Back pitch

C. Diagonal pitch

D. Diametric pitch

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4

Stirling cycle consists of

A. Two constant volume and two isentropic processes

B. Two constant volume and two isothermal processes

C. Two constant pressure and two isothermal processes

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

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4

A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is

A. -140 kJ

B. -80 kJ

C. -40 kJ

D. +60 kJ

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4

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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4

The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx and σy) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by

A. OC

B. OP

C. OQ

D. PQ

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4

The stress induced in a body due to suddenly applied load compared to when it is applied gradually is

A. Same

B. Half

C. Two times

D. Four times

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4

Producer 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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4

If Kh is the torque resisting capacity of a hollow shaft and Ks is that of a solid shaft, of the same material, length and weight. Then,

A. Kh > Ks

B. Kh < Ks

C. Kh = Ks

D. None of these

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4

Shear stress induced in a shaft subjected to tension will be

A. Maximum at periphery and zero at center

B. Maximum at center

C. Uniform throughout

D. None of the above

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4

The value of gas constant (R) in S. I. units is

A. 0.287 J/kgK

B. 2.87 J/kgK

C. 28.7 J/kgK

D. 287 J/kgK

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4

The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is

A. 0.086

B. 1.086

C. 1.086

D. 4.086

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4

The maximum bending moment for the beam shown in the below figure, is

A. wl²/3√3

B. wl²/6√3

C. wl²/9√3

D. wl²/12√3

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4

The stress induced in a body, when suddenly loaded, is ________ the stress induced when the same load is applied gradually.

A. Equal to

B. One-half

C. Twice

D. Four times

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4

Young's modulus is defined as the ratio of

A. Volumetric stress and volumetric strain

B. Lateral stress and lateral strain

C. Longitudinal stress and longitudinal strain

D. Shear stress to shear strain

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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 absolute zero temperature is taken as

A. 237°C

B. -273°C

C. -237°C

D. 273°C

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4

The efficiency of a Carnot engine depends on

A. Working substance

B. Design of engine

C. Size of engine

D. Temperatures of source and sink

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4

First law of thermodynamics deals with

A. Conservation of heat

B. Conservation of momentum

C. Conservation of mass

D. Conservation of energy

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4

For the beam shown in the below figure, the shear force diagram between A and B is

A. A horizontal line

B. A vertical line

C. An inclined line

D. A parabolic curve