### Related Questions

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# 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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# In testing a material for endurance strength, it is subjected to

D. Completely reversed load

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# A sliding bearing which operates without any lubricant present, is called

B. Boundary lubricated bearing

C. Hydrodynamic lubricated bearing

D. Hydrostatic lubricated bearing

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# When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

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# The velocity factor for precision metallic gears cut with high accuracy and operating at velocities upto 20 m/s is equal to

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# Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be

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# A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

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# When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

C. Sum of the initial tension and external load applied

D. Initial tension or external load, whichever is greater

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# The stress in the threaded part of the bolt will be __________ as compared to the shank.

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# In order to obtain bolt of uniform strength

A. Increase shank diameter

C. Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread

D. Tighten die bolt properly

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# Crushing resistance required to crush the rivet per pitch length is

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# In a flange coupling, the flanges are coupled together by means of

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# In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

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# A single strap butt joint is always in __________ shear.

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# 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

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# A transmission shaft includes

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# Stress concentration is caused due to

A. Variations in load acting on a member

B. Variations in properties of materials in a member

C. Abrupt change of cross-section

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# An alien bolt is

C. Provided with hexagonal depression in head

D. Used in high speed components

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# Plastic flow in ductile materials

A. Increases the seriousness of static loading stress concentration

B. Lessens the seriousness of static loading stress concentration

D. Depends on other considerations

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# If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

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# The angle of twist of shaft is

A. Directly proportional to (shaft diameter)²

B. Inversely proportional to (shaft diameter)²

C. Directly proportional to (shaft diameter)⁴

D. Inversely proportional to (shaft diameter)⁴

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

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# If a spring is cut down into two springs, the stiffness of cut springs will be

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# The design of shafts made of brittle materials is based on

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# The material generally used for aircraft components is

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

D. [2 × (P_{1} + P_{2})] + P_{c} Where Pc is centrifugal tension

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# 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

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# When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as

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# Eye bolts are used for

B. Absorbing shock and vibrations

D. Lifting and transportation of machines and cubicles

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# If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by