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4

The ultimate strength of steel in tension in comparison to shear is in the ratio of

A. 1 : 1

B. 2 : 1

C. 3 : 2

D. 2 : 3

Correct Answer :

C. 3 : 2


Related Questions

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4

The backlash for spur gears depends upon

A. Module

B. Tooth profile

C. Both module and pitch line velocity

D. Pitch line velocity

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4

Which of the following statement is correct?

A. A parallel sunk key is a taperless key

B. A parallel sunk key may be rectangular or square in cross-section

C. A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft

D. All of the above

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4

In levers, leverage is the ratio of

A. Load lifted to the effort applied

B. Mechanical advantage to the velocity ratio

C. Load arm to the effort arm

D. Effort arm to the load arm

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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

While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

A. Both the ends fixed

B. Both the ends hinged

C. One end fixed and the other end hinged

D. One end fixed and the other end free

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4

According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be

A. 45 to 60 %

B. 63 to 70 %

C. 70 to 83 %

D. 80 to 90 %

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4

In a partial journal bearing, the angle of contact of the bearing with the journal is

A. 120°

B. 180°

C. 270°

D. 360°

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4

In a gear, having Involute teeth, the normal to the Involute is a tangent to the

A. Base circle

B. Pitch circle

C. Addendum circle

D. Dedendum circle

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4

Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

A. Woodruff key

B. Feather key

C. Gib-head key

D. Tangent key

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4

Fibrous fracture occurs in

A. Ductile material

B. Brittle material

C. Elastic material

D. Hard material

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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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4

In case of pressure vessels having closed ends, the fluid pressure induces

A. Longitudinal stress

B. Shear stress

C. Circumferential stress

D. None of these

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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

A bolt

A. Has a head on one end and a nut fitted to the other

B. Has head at one end and other end fits into a tapped hole in the other part to be joined

C. Has both the ends threaded

D. Is provided with pointed threads

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4

Residual stress in materials

A. Acts when external load is applied

B. Becomes zero when external load is removed

C. Is independent of external loads

D. Is always harmful

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4

When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the

A. Initial tension

B. External load applied

C. Sum of the initial tension and external load applied

D. Initial tension or external load, whichever is greater

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4

A transmission shaft includes

A. Over head shaft

B. Counter shaft

C. Line shaft

D. All of these

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4

A type of brake commonly used in motor cars is a

A. Shoe brake

B. Band and block brake

C. Band brake

D. Internal expanding brake

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4

For unequal width of butt straps, the thicknesses of butt straps are

A. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside

B. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside

C. 0.75 t for both the straps on the inside and outside

D. 0.625 t for both the straps on the inside and outside

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4

The valve rod in a steam engine is connected to an eccentric rod by

A. Cotter joint

B. Bolted joint

C. Knuckle joint

D. Universal coupling

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4

In a horizontal flat belt drive, it is customary to use

A. Bottom side of belt as slack side

B. Top side of belt as slack side

C. Idler pulley

D. None of the above

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4

When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will

A. Have contact at the bottom most of the bearing

B. Move towards right of the bearing making no metal to metal contact

C. Move towards right of the bearing making the metal to metal contact

D. Move towards left of the bearing making metal to metal contact

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4

When a helical compression spring is cut into halves, the stiffness of the resulting spring will be

A. Same

B. Double

C. One-half

D. One-fourth

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4

In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

A. Remains constant at all speeds

B. Is minimum at zero speed and increases monotonically with increase in speed

C. Is maximum at zero speed and decreases monotonically with increase in speed

D. Becomes minimum at an optimum speed and then increases with further increase in speed

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4

The wire ropes make contact at

A. Bottom of groove of the pulley

B. Sides and bottom of groove of the pulley

C. Anywhere in the groove of the pulley

D. Sides of groove of the pulley

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4

Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material)

A. p.d.σt

B. p.t.σt

C. (p - d) σt

D. (p - d) t.σt

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4

When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

A. Axially upwards

B. Axially downwards

C. Axially upwards or downwards

D. None of these

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4

Yield point in fatigue loading as compared to static loading is

A. Same

B. Higher

C. Lower

D. Depends on other factors

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4

The ultimate strength of steel in tension in comparison to shear is in the ratio of

A. 1 : 1

B. 2 : 1

C. 3 : 2

D. 2 : 3

What is the correct answer?

4

Fabric belts are used in industrial applications because

A. They are cheap

B. They can work at high temperature

C. They are unaffected by moisture and humidity

D. None of the above