86051. In order to remove internal stresses produced by hardening the steel, the process usually adopted is
86052. A pressure vessel is said to be a thin shell, if the ratio of wall thickness to its diameter is equal to 1/10.
86053. A bolt of uniform strength can be developed by
86054. The ratio of endurance limit in shear to the endurance limit in flexure is
86055. The lower deviation is the algebraic difference between the
86056. When plates are fastened by a rivet, the holes in the plates should be made by punching and reaming.
86057. When carbon in the cast iron is principally in the form of graphite, the cast iron will be of
86058. A shoe brake is commonly used in railway trains.
86059. The rivet head used for boiler plate riveting is usually
86060. A single strap butt joint is always in __________ shear.
86061. 18/8 steel contains
86062. The module in the reciprocal of diametral pitch.
86063. The velocity factor for carefully cut gears operating at velocities upto __________ is equal to 4.5/4.5 + v.
86064. A localised compressive stress at the area of contact between two members is known as
86065. The metal suitable for bearings subjected to heavy loads is
86066. The V-belts are particularly suitable for __________ drives.
86067. For hardening alloy steels and high speed steels, they are heated to
86068. An universal coupling is used to connect two shafts
86069. Euler's formula for a mild steel column is not valid if the slenderness ratio is
86070. The standard length of the shaft is
86071. According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by
86072. When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will
86073. A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as
86074. When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as
86075. A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called
86076. In case of pressure vessels having closed ends, the fluid pressure induces
86077. A machine part subjected to __________ is called a strut.
86078. The yield point in static loading is __________ as compared to fatigue loading.
86079. When two helical springs of equal lengths are arranged to form a cluster spring, then
86080. For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be
86081. The stress in the threaded part of the bolt will be __________ as compared to the shank.
86082. A shaft is a rotating machine element.
86083. The dedendum circle diameter is equal to (where φ = Pressure angle)
86084. Which one of the following is a positive drive?
86085. The period during which the cam follower remains at rest, when cam moves, is known as
86086. The flank of the tooth is the
86087. The included angle for the British Association thread is
86088. The contact ratio is the ratio of
86089. The cracks in helical springs used in railway carriages usually start on the inner side of the coil because of the fact that
86090. In a marine flange coupling, the thickness of flange is taken as
86091. The wire ropes make contact at
86092. A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm2. If the permissible tensile stress in the metal is 20 N/mm2, then the thickness of the metal required for making the pipe will be
86093. A tangent key is provided in pairs at right angles and each key is to withstand torsion in one direction only.
86094. When the speed of belt increases,
86095. According to law of gearing, the common normal at the point of contact between a pair of teeth must always pass through the pitch point.
86096. An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the
86097. The major diameter of a screw thread is also known as core or root diameter.
86098. The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)
86099. The property of a material which enables it to be drawn into wires with the application of a tensile force, is called
86100. The helix angle for single helical gears ranges from
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