Related Questions
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4
18/8 steel contains
A. 18% nickel and 8% chromium
B. 18% chromium and 8% nickel
C. 18% nickel and 8% vanadium
D. 18% vanadium and 8% nickel
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4
In standard taper roller bearings, the angle of taper of outer raceway is
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4
The piston pin bearings in heavy duty diesel engines are
A. Needle roller bearings
B. Tapered roller bearings
C. Spherical roller bearings
D. Cylindrical roller bearings
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4
The connecting rod bolts are tightened up with initial tension greater than the external load so that
B. Bolts are weakest elements
C. The resultant load on the bolt would not be affected by the external cyclic load
D. Bolts will not loosen during service
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4
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
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4
A tube has the following advantage over pipe
A. Lighter and easier to handle
B. Greater shock absorption
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4
The included angle between the sides of V-belt is
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4
According to Indian standards, total numbers of fundamental deviations are
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4
Rankine Gordon formula for buckling is valid for
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4
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to
D. [2 × (P1 + P2)] + Pc Where Pc is centrifugal tension
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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
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4
In a transverse fillet welded joint, the size of weld is __________ the throat of weld.
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4
The number of slots in a 25 mm castle nut is
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The property of a bearing material which has the ability to accomodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as
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4
The contact ratio is the ratio of
A. Length of arc of recess to the circular pitch
B. Length of path of contact to the circular pitch
C. Length of arc of contact to the circular pitch
D. Length of arc of approach to the circular pitch
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4
When a belt drive is transmitting maximum power,
A. Effective tension is equal to centrifugal tension
B. Effective tension is half of centrifugal tension
C. Driving tension on slack side is equal to centrifugal tension
D. Driving tension on tight side is twice the centrifugal tension
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4
The ratio of driving tensions in V-belt drives is __________ flat belt drives.
D. cosecα times more than
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4
A localised compressive stress at the area of contact between two members is known as
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4
The design of the pressure vessel is based on
C. Longitudinal and hoop stress
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4
The rivet head used for boiler plate riveting is usually
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4
In worm gears, the pressure angle is ________ the angle between two inclined faces in axial plane.
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4
The edges of a boiler plate are bevelled to an angle of
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4
The static tooth load should be __________ the dynamic load.
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4
According to I.B.R., the distance between the rows of rivets, for equal number of rivets in more than one row for lap joint or butt joint (chain riveting) shall not be less than
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4
For a square key made of mild steel, the shear and crushing strength are related as
A. Shear strength is equal to crushing strength
B. Shear strength is greater than crushing strength
C. Shear strength is less than crushing strength
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4
Resistance to fatigue of a material is measured by
B. Coefficient of elasticity
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4
In leaf springs, the longest leaf is known as
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4
The most important dimension in the design of a nut is
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When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.
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The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be