A shaft is subjected to
Gears are casted by
In levers, leverage is the ratio of
The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.
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?
An universal coupling is a type of __________ coupling.
In a nut and bolt, the diameter at which the ridges on the bolt are in complete touch with the ridges of the corresponding nut, is called pitch diameter.
The strength of a riveted joint is equal to
The form factor of a helical gear __________ with the increase in the helix angle.
When a bolt is subjected to an external load, the stress induced in the bolt will be
A double strap butt joint (with equal straps) is
The taper on a rectangular sunk key is
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio
For a bevel gear having the pitch angle θ , the ratio of formative number of teeth (TE) to actual number of teeth (T) is
When a helical compression spring is cut into halves, the stiffness of the resulting spring will be
When a helical compression spring is cut into halves, the stiffness of the resulting spring will be
When carbon in the cast iron is in the form of cementite, the cast iron will be of white colour.
The included angle for the British standard whitworth thread is
The modulus of elasticity for mild steel is approximately equal to
The transverse fillet welded joints are designed for
Failure of a material is called fatigue when it fails
A connecting rod subjected to an axial load may buckle with
The centrifugal tension in the belt
If the size of a standard specimen for a fatigue testing machine is increased, the endurance limit for the material will
When the lubricant is forced between the journal and the bearing by external pressure, the bearing is called hydrostatic lubricated bearing.
The centre to centre distance between two consecutive rivets in a row, is called
When the fulcrum is in between the load and effort, the lever is said to be of
Crushing resistance required to crush the rivet per pitch length is
The ball bearings are, usually, made from
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)
A bushed pin flexible coupling is used to connect two shafts whose axes intersect at a small angle.
A bushed pin flexible coupling is used to connect two shafts whose axes intersect at a small angle.
The V-belt is used to transmit great amount of power and when the two pulleys are very near to each other.
The buttress threads have low frictional resistance characteristic of the square threads and have the same strength of V-threads.
Which of the following property is essential for spring materials?
A coupling used to connect two perfectly aligned shafts, is
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be
The radial distance from the __________ to the clearance circle is called working depth.
Cast iron pipes are mainly used
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.
A steel containing upto 0.carbon is known as
The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)
For high speed engines, the cam follower should move with
The efficiency of a square threaded screw is maximum if the helix angle is equal to (where φ = Angle of friction)
In a multiple V-belt drive, if one of the belts break, then