Related Questions
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When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as
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4
Which of the following has threads at both ends?
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If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as
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4
If two springs are in parallel then their overall stiffness will be
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4
Crushing resistance required to crush the rivet per pitch length is
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4
The ultimate strength of steel in tension in comparison to shear is in the ratio of
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4
If threads on a bolt are left hand, threads on nut will be
A. Right hand with same pitch
B. Left hand with same pitch
C. Could be left or right hand
D. Right hand with fine pitch
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4
In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be
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The standard length of the shaft is
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If the size of a standard specimen for a fatigue testing machine is increased, the endurance limit for the material will
A. Have same value as that of standard specimen
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Lewis form factor for 14 ½° composite and full depth involute system is (where T = Number of teeth)
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In a belt drive, if the pulley diameter is doubled keeping the tension and belt width constant, then it will be necessary to
A. Increase the key length
B. Increase the key depth
C. Increase the key width
D. Decrease the key length
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4
In static loading, stress concentration is more serious in
C. Brittle as well as ductile materials
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Slenderness ratio is the ratio of
A. Effective length of column to least radius of gyration of the column
B. Width of column to depth of column
C. Maximum size of column to minimum size of column
D. Effective length of column to width of column
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4
A key made from a cylindrical disc having segmental cross-section, is known as
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The ratio of endurance limit in shear to the endurance limit in flexure is
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The fatigue life of a part can be improved by
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The design calculations for members subject to fluctuating loads with the same factor of safety, yield the most conservative estimates when using
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4
The resistance to fatigue of a material is measured by
B. Ultimate tensile strength
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For applications involving high stresses in one direction only the following type of thread would be best suited
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4
Transverse fillet welded joints are designed for
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A screw is said to be a self locking screw, if its efficiency is
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The resilience of a bolt may be increased by
A. Increasing its shank diameter
C. Decreasing its shank diameter
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The ratio of pitch circle diameter in millimetres to the number of teeth, is called
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The included angle for the V-belt is usually
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Fibrous fracture occurs in
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A coupling used to connect two perfectly aligned shafts, is
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The cold working of metals is carried out __________ the recrystallisation temperature.
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The material generally used for aircraft components is
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The spring mostly used in gramophones is