A jam nut is a locking device in which
A spring of stiffnessN/m is streteched initially bymm from the undeformed position. The work required to stretch it by anothermm is
A spring is used to
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as
A parallel sunk key, made of steel, is equally strong in shearing and crushing.
The design of shafts made of brittle materials is based on
Rankine's theory is used for
In designing thick cylinders, the equation used is
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.
The difference between the upper limit and lower limit of a dimension is called
A feather key transmits a turning moment and permits axial movement also.
When the top of a tooth undercuts the root on the mating gear, it is known as interference.
The included angle for the V-belt is usually
In designing a key, it is assumed that the distribution of forces along the length of key
A locking device extensively used in automobile industry is a
The objective of caulking in a riveted joint is to make the joint
The parallel fillet welded joints are designed for compressive strength.
The algebraic difference between the actual size and the corresponding basic size is called actual deviation.
The width of the pulley should be __________ width of the belt.
If the helix angle of a helical gear is increased, the load carrying capacity of the tooth increases.
In static loading, stress concentration is more serious in
In a belt drive, the velocity ratio is the inverse ratio of the diameters of driving and driven pulleys.
According to Indian standards, total number of tolerance grades are
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.
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.
A column of length l is fixed at both ends. The equivalent length of the column is
In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.
The expansion joint is mostly used for pipes which carry steam at __________ pressures.
The bending stress in a curved beam is
The property of a material which enables it to resist fracture due to high impact loads, is called toughness.
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be
In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.
A key way lowers
The average shear stress in the hollow shaft is smaller than the average shear stress in the solid shaft.
The design of the pressure vessel is based on
A compound belt drive is used when
A type of brake commonly used in motor cars is a
A castle nut is a locking device in which
A key is normally made from a cold rolled mild steel bars.
The piston pin bearings in heavy duty diesel engines are
The resultant axial load on a bolt depends upon
The buckling load will be maximum for a column, if
The bearing characteristic number in a hydrodynamic bearing depends upon
Which of following statement is correct, for the two shafts connected in parallel?
Wire ropes as compared to cotton ropes
The cap screws are
The application of second type levers is found in
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