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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

Correct Answer :

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


Related Questions

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4

The period during which the cam follower remains at rest, when cam moves, is known as

A. Constant period

B. Fixed period

C. Dwell period

D. Idle period

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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 helix angle for double helical gears may be made up to

A. 45°

B. 60°

C. 75°

D. 90°

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4

Spring stiffness is

A. Ratio of coil diameter to wire diameter

B. Load required to produce unit deflection

C. Its capability of storing energy

D. Its ability to absorb shocks

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4

The following type of nut is used with alien bolt

A. Hexagonal nut

B. Slotted nut

C. Castle nut

D. Any one of the above

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4

Stress concentration is caused due to

A. Variation in properties of material from point to point in a member

B. Pitting at points or areas at which loads on a member are applied

C. Abrupt change of section

D. All of the above

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4

A double fillet welded joint with parallel fillet weld of length l and leg s is subjected to a tensile force P. Assuming uniform stress distribution, the shear stress in the weld is given by

A. √2P/s.l

B. P/2.s.l

C. P/√2.s.l

D. 2P/s.l

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4

Applications in which stresses are encountered in one direction only uses following type of threads

A. Metric

B. Buttress

C. Acme

D. Square

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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

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4

The material generally used for aircraft components is

A. Mild steel

B. High speed steel

C. Stainless steel

D. Aluminium

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4

The flank of the tooth is the

A. Surface of the top of the tooth

B. Surface of the tooth above the pitch surface

C. Width of the tooth measured along the pitch circle

D. Surface of the tooth below the pitch surface

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4

Which of the following is a permanent fastening?

A. Bolts

B. Keys

C. Cotters

D. Rivets

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4

For maximum power, the velocity of the belt will be

A. √(T/m)

B. √(T/2m)

C. √(T/3m)

D. None of these

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4

In composite or reverse laid ropes

A. Direction of twist of wires in strands is opposite to the direction of twist of strands

B. Direction of twist of wires and strands are same

C. Wires in two adjacent strands are twisted in opposite direction

D. Wires are not twisted

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4

For applications involving high stresses in one direction only the following type of thread would be best suited

A. ISO metric thread

B. Acme thread

C. Square thread

D. Buttress thread

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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 thrust bearings, the load acts

A. Along the axis of rotation

B. Parallel to the axis of rotation

C. Perpendicular to the axis of rotation

D. In any direction

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4

The cross-section of the arm of a bell crank lever is

A. Rectangular

B. Elliptical

C. I-section

D. Any one of these

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4

The strength of a riveted joint is equal to

A. Tearing strength of plate (Pt)

B. Shearing strength of rivet (Ps)

C. Crushing strength of rivet (Pc)

D. Least value of Pt Ps and Pc

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4

Rankine's theory is used for

A. Brittle materials

B. Ductile materials

C. Elastic materials

D. Plastic materials

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4

The cold working of metals is carried out __________ the recrystallisation temperature.

A. Above

B. Below

C. At

D. None of these

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4

For hardening alloy steels and high speed steels, they are heated to

A. 1100 to 1300°C

B. 1300 to 1500°C

C. 500 to 600°C

D. 700 to 900°C

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4

A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

A. Angular bevel gears

B. Mitre gears

C. Crown Bevel gears

D. Internal bevel gears

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4

The pipe joint mostly used for pipes carrying water at low pressures is

A. Socket joint

B. Nipple joint

C. Union joint

D. Spigot and socket joint

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4

The number of slots in a 25 mm castle nut is

A. 8

B. 4

C. 2

D. 6

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4

An Involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the

A. Tip of the pinion and flank of gear

B. Tip of the gear and flank of pinion

C. Flanks of both gear and pinion

D. Tip of both gear and pinion

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4

The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called

A. Repeated stress

B. Yield stress

C. Fluctuating stress

D. Alternating stress

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4

Which of the following spring is used in mechanical wrist watch?

A. Helical compression spring

B. Spiral spring

C. Torsion spring

D. Belleville spring

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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 spring mostly used in gramophones is

A. Helical spring

B. Conical spring

C. Flat spiral spring

D. Volute spring