86401. A spring of stiffness 1000 N/m is streteched initially by 100 mm from the undeformed position. The work required to stretch it by another 100 mm is
86402. A feather key transmits a turning moment and permits axial movement also.
86403. The width of the pulley should be __________ width of the belt.
86404. In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.
86405. The design of the pressure vessel is based on
86406. In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be
86407. For high speed engines, the cam follower should move with
86408. Rankine's theory is used for
86409. The objective of caulking in a riveted joint is to make the joint
86410. A material is stressed within elastic limit and its linear strain is double as compared to lateral strain. The ratio of its Bulk modulus to Young's modulus will be equal to one.
86411. A jam nut is a locking device in which
86412. The difference between the upper limit and lower limit of a dimension is called
86413. The algebraic difference between the actual size and the corresponding basic size is called actual deviation.
86414. The average shear stress in the hollow shaft is smaller than the average shear stress in the solid shaft.
86415. The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)
86416. The design of shafts made of brittle materials is based on
86417. A locking device extensively used in automobile industry is a
86418. A key way lowers
86419. A key is normally made from a cold rolled mild steel bars.
86420. Which of following statement is correct, for the two shafts connected in parallel?
86421. Lewis form factor for the 20° full depth involute system is equal to 0.154 - 0.841/T.
86422. The railway carriage couplings have
86423. A shaft is subjected to
86424. When the lubricant is forced between the journal and the bearing by external pressure, the bearing is called hydrostatic lubricated bearing.
86425. Crushing resistance required to crush the rivet per pitch length is
86426. 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)
86427. The buttress threads have low frictional resistance characteristic of the square threads and have the same strength of V-threads.
86428. The tension on the slack side of the belt is __________ the tension on the tight side of the belt.
86429. The centre to centre distance between two consecutive rivets in a row, is called
86430. A bushed pin flexible coupling is used to connect two shafts whose axes intersect at a small angle.
86431. Which of the following property is essential for spring materials?
86432. A steel containing upto 0.15% carbon is known as
86433. The property of a material which enables it to resist fracture due to high impact loads, is called toughness.
86434. The resultant axial load on a bolt depends upon
86435. Wire ropes as compared to cotton ropes
86436. The thickness of key is usually taken equal to one-sixth of diameter of shaft.
86437. Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to
86438. The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.
86439. A triple riveted butt joint with double straps of unequal width is to be designed for a boiler shell. The pitch of the rivets in the outer row is double the pitch in the inner row and zig-zag riveting is proposed. Which of the following statement is correct?
86440. The form factor of a helical gear __________ with the increase in the helix angle.
86441. The taper on a rectangular sunk key is
86442. When carbon in the cast iron is in the form of cementite, the cast iron will be of white colour.
86443. A castle nut is a locking device in which
86444. If P1 is the initial tension due to tightening up the bolt and P2 is the external load on the bolt, then the resultant load (P) on a bolt may be obtained by using the relation (where a = Ratio of elasticity of connected parts to the elasticity of bolt)
86445. The application of second type levers is found in
86446. The spindles of bench vices are usually provided with knuckle threads.
86447. According to Indian standards, total number of tolerance grades are
86448. An universal coupling is a type of __________ coupling.
86449. When a bolt is subjected to an external load, the stress induced in the bolt will be
86450. If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio
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