Q.1
A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is
Q.2
The pitch of threads on a Jock nut in comparison to pitch of nut is
Q.3
The size of a cam depends upon
Q.4
The helix angle for single helical gears ranges from
Q.5
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is
Q.6
In a horizontal flat belt drive, it is customary to use
Q.7
In hydrodynamic bearings
Q.8
The function of a washer is to
Q.9
The load cup of a screw jack is made separate from the head of the spindle to
Q.10
A V-belt designated as B 4430 LP has
Q.11
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.
Q.12
When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will
Q.13
When the shaft rotates in anticlockwise direction at high speed in a bearing, it will
Q.14
The objective of idler pulley in belt drive is to
Q.15
According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)
Q.16
In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.
Q.17
The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for
Q.18
Transverse fillet welded joints are designed for
Q.19
In a flange coupling, the bolts are subjected to
Q.20
A cotter joint is used to connect two __________ rods.
Q.21
The rated life of a bearing varies
Q.22
The bending stress in a curved beam is
Q.23
The centre to centre distance between two consecutive rivets in a row, is called
Q.24
In a gear, having Involute teeth, the normal to the Involute is a tangent to the
Q.25
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)
Q.26
Which of the following has threads at both ends?
Q.27
The material generally used for aircraft components is
Q.28
A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as,
Q.29
In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because
Q.30
A tap bolt
Q.31
A woodruff key is
Q.32
Machine screws are
Q.33
The rolling contact bearings as compared to sliding contact bearings have
Q.34
For tight leakage joints, following type of thread is best suited
Q.35
Which of the following statement is wrong for a connecting rod?
Q.36
Which of the following cotter joint will be used to connect strap end of a connecting rod?
Q.37
A key way lowers
Q.38
Which one of the following is a positive drive?
Q.39
The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to
Q.40
According to Indian standard specifications, plain carbon steel designated by 40C8 contains carbon
Q.41
A stud
Q.42
A bolt
Q.43
The resultant axial load on a bolt depends on
Q.44
Which of the following formula is used in designing a connecting rod?
Q.45
A riveted joint is a __________ fastening.
Q.46
The expansion joint is mostly used for pipes which carry steam at __________ pressures.
Q.47
The V-belts are particularly suitable for __________ drives.
Q.48
A crankshaft is a __________ shaft.
Q.49
A single strap butt joint is always in __________ shear.
Q.50
A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)
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