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4

The yield point in static loading is __________ as compared to fatigue loading.

A. Higher

B. Lower

C. Same

D. None of these

Correct Answer :

A. Higher


Related Questions

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18/8 steel contains

A. 18% nickel and 8% chromium

B. 18% chromium and 8% nickel

C. 18% nickel and 8% vanadium

D. 18% vanadium and 8% nickel

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In standard taper roller bearings, the angle of taper of outer raceway is

A.

B.

C. 15°

D. 25°

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The piston pin bearings in heavy duty diesel engines are

A. Needle roller bearings

B. Tapered roller bearings

C. Spherical roller bearings

D. Cylindrical roller bearings

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4

The connecting rod bolts are tightened up with initial tension greater than the external load so that

A. Joint may not open up

B. Bolts are weakest elements

C. The resultant load on the bolt would not be affected by the external cyclic load

D. Bolts will not loosen during service

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4

When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be

A. Knuckle threads

B. Square threads

C. Acme threads

D. Buttress threads

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4

A tube has the following advantage over pipe

A. Lighter and easier to handle

B. Greater shock absorption

C. Smoother inside walls

D. All of the above

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4

The included angle between the sides of V-belt is

A. 40°

B. 45°

C. 38°

D. 60°

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4

According to Indian standards, total numbers of fundamental deviations are

A. 10

B. 15

C. 20

D. 25

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4

Rankine Gordon formula for buckling is valid for

A. Long column

B. Short column

C. Short and long column

D. Very long column

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If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to

A. [(√P1 + √P2)/2]²

B. P1 + P2

C. 2 × (P1 + P2)

D. [2 × (P1 + P2)] + Pc Where Pc is centrifugal tension

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4

A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

A. 1 kN-m

B. 2 kN-m

C. 3 kN-m

D. 4 kN-m

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4

In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

A. 0.5 times

B. Equal to

C. 2 times

D. Double

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4

The number of slots in a 25 mm castle nut is

A. 8

B. 6

C. 4

D. 2

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The property of a bearing material which has the ability to accomodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as

A. Bondability

B. Embeddability

C. Comformability

D. Fatigue strength

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4

The contact ratio is the ratio of

A. Length of arc of recess to the circular pitch

B. Length of path of contact to the circular pitch

C. Length of arc of contact to the circular pitch

D. Length of arc of approach to the circular pitch

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4

When a belt drive is transmitting maximum power,

A. Effective tension is equal to centrifugal tension

B. Effective tension is half of centrifugal tension

C. Driving tension on slack side is equal to centrifugal tension

D. Driving tension on tight side is twice the centrifugal tension

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4

The ratio of driving tensions in V-belt drives is __________ flat belt drives.

A. Equal to

B. sinα times more than

C. sinα times less than

D. cosecα times more than

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A localised compressive stress at the area of contact between two members is known as

A. Tensile stress

B. Bending stress

C. Bearing stress

D. Shear stress

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4

The design of the pressure vessel is based on

A. Longitudinal stress

B. Hoop stress

C. Longitudinal and hoop stress

D. None of these

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4

The rivet head used for boiler plate riveting is usually

A. Pan Head

B. Snap head

C. Counter sunk head

D. Conical head

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In worm gears, the pressure angle is ________ the angle between two inclined faces in axial plane.

A. Half

B. Twice

C. Thrice

D. None of these

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4

The edges of a boiler plate are bevelled to an angle of

A. 30°

B. 45°

C. 60°

D. 80°

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The static tooth load should be __________ the dynamic load.

A. Equal to

B. Less than

C. Greater than

D. None of these

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4

According to I.B.R., the distance between the rows of rivets, for equal number of rivets in more than one row for lap joint or butt joint (chain riveting) shall not be less than

A. d

B. 1.5 d

C. 2d

D. 2.5 d

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4

For a square key made of mild steel, the shear and crushing strength are related as

A. Shear strength is equal to crushing strength

B. Shear strength is greater than crushing strength

C. Shear strength is less than crushing strength

D. None of the above

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4

Resistance to fatigue of a material is measured by

A. Young's modulus

B. Coefficient of elasticity

C. Elastic limit

D. Endurance limit

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4

In leaf springs, the longest leaf is known as

A. Master leaf

B. Lower leaf

C. Upper leaf

D. None of these

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4

The most important dimension in the design of a nut is

A. Pitch diameter

B. Inside diameter

C. Outside diameter

D. Height

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When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

A. 10 times

B. 5 times

C. 15 times

D. 20 times

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The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be

A. Same in both cases

B. 2 times more

C. 3 times more

D. 4 times more