Related Questions
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4
Stress concentration is caused due to
A. Variations in load acting on a member
B. Variations in properties of materials in a member
C. Abrupt change of cross-section
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4
The included angle for the V-belt is usually
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4
Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by
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4
The notch angle of the Izod impact test specimen is
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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 material commonly used for crane hooks is
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4
Stress concentration factor is defined as the ratio of
A. Maximum stress to the endurance limit
B. Nominal stress to the endurance limit
C. Maximum stress to the nominal stress
D. Nominal stress to the maximum stress
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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 valve rod in a steam engine is connected to an eccentric rod by
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4
According to Indian standards, total numbers of fundamental deviations are
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The ratio of endurance limit in shear to the endurance limit in flexure is
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4
In order to remove internal stresses produced by hardening the steel, the process usually adopted is
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4
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be
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4
The following type of nut is used with alien bolt
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4
Which of the following formula is used in designing a connecting rod?
C. Johnson's straight line formula
D. Johnson's parabolic formula
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4
The metal suitable for bearings subjected to heavy loads is
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4
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)
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4
The endurance limit of a material with finished surface in comparison to rough surface is
D. More or less depending on quantum of load
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When the bolt is very yielding as compared to the connected members, 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
A chain drive transmits __________ power as compared to belt drive.
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4
In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be
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4
The form factor of a helical gear __________ with the increase in the helix angle.
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4
Taper on the cotter and slot is provided
D. May be provided anywhere
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4
When the belt speed increases
A. Power transmitted increases
B. Power transmitted decreases
C. Power transmitted increases to a maximum value and then decreases
D. Power transmitted remains the same
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4
A spring is used to
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4
In leaf springs, the longest leaf is known as
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4
In a partial journal bearing, the angle of contact of the bearing with the journal is
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4
The design of the pressure vessel is based on
C. Longitudinal and hoop stress
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4
According to I.B.R., when the thickness of the boiler shell (t) is less than 8 mm, then the diameter of the rivet hole (d) is obtained by
A. Equating tearing resistance of the plate to the shearing resistance of the rivets
B. Equating tearing resistance of the plate to the crushing resistance of the rivets
C. Equating shearing resistance to the crushing resistance of the rivets
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4
The shock absorbing capacity of a bolt may be increased by
A. Increasing its shank diameter
B. Decreasing its shank diameter
C. Tightening the bolt properly
D. Making the shank diameter equal to core diameter of thread