Related Questions
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4
According to Indian standard specifications, 100 H6/g5 means that the
C. Difference between the actual size and basic size is 100 mm
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4
The taper on key is given on
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4
A spring of stiffness 1000 N/m is stretched initially by 100 mm from the undeformed position. The work required to stretch it by another 100 mm is
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4
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?
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4
A sliding bearing which operates without any lubricant present, is called
B. Boundary lubricated bearing
C. Hydrodynamic lubricated bearing
D. Hydrostatic lubricated bearing
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4
When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as
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4
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is
D. Larger/smaller depending on diameter of spring coil
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4
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to
C. Static as well as dynamic load
D. Completely reversed load
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4
For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be
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4
Which of the following cotter joint will be used to connect strap end of a connecting rod?
A. Spigot and socket cotter joint
B. Sleeve and cotter joint
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4
The creep in the belt is due to
A. Effect of temperature on belt
C. Unequal extensions in the belt due to tight and slack side tensions
D. Stresses beyond elastic limit of belt material
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4
The process extensively used for making bolts and nuts is
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4
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of
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4
The resistance to fatigue of a material is measured by
B. Ultimate tensile strength
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4
In a horizontal flat belt drive, it is customary to use
A. Bottom side of belt as slack side
B. Top side of belt as slack side
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4
Rankine Gordon formula for buckling is valid for
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4
The expansion joint is mostly used for pipes which carry steam at __________ pressures.
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4
Resilience of a material is important, when it is subjected to
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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 the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the
C. Sum of the initial tension and external load applied
D. Initial tension or external load, whichever is greater
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4
When two helical springs of equal lengths are arranged to form a cluster spring, then
A. Shear stress in each spring will be equal
B. Load taken by each spring will be half the total load
D. Both A and B is correct
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4
Two helical springs of the same material and of equal circular crosssection, 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
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4
The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for
A. Reducing stress concentration
D. Fullering and caulking
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4
For same pulley diameters, center distance, belt speed and belt and pulley materials,
A. Open belt drive transmits more power than crossed belt drive
B. Crossed belt drive transmits more power than open belt drive
C. Open and crossed belt drives transmit same power
D. Power transmission does not depend upon open and crossed types of constructions
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4
The design of pin of a rocker arm of an I.C. engine is based on
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4
The temperature at which the new grains are formed in the metal is known as
A. Lower critical temperature
B. Upper critical temperature
C. Recrystallisation temperature
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4
The helix angle for double helical gears may be made up to
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4
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is
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4
A tapered key which fits in a key-way in the hub and is flat on the shaft, is known as
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4
The strap end of a connecting rod of steam engine is joined by
B. Sleeve and cotter joint
C. Spigot socket cotter joint