Q. When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)

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Q. When two helical springs of equal lengths are arranged to form a cluster spring, then

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Q. For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

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Q. The stress in the threaded part of the bolt will be __________ as compared to the shank.

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Q. A shaft is a rotating machine element.

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Q. The dedendum circle diameter is equal to (where φ = Pressure angle)

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Q. The rivet head used for boiler plate riveting is usually

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Q. A single strap butt joint is always in __________ shear.

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Q. 18/8 steel contains

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Q. The module in the reciprocal of diametral pitch.

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Q. The velocity factor for carefully cut gears operating at velocities upto __________ is equal to 4.5/4.5 + v.

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Q. Euler's formula for a mild steel column is not valid if the slenderness ratio is

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Q. The standard length of the shaft is

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Q. 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

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Q. When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will

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Q. A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

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Q. 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

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Q. A tangent key is provided in pairs at right angles and each key is to withstand torsion in one direction only.

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Q. When the speed of belt increases,

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Q. 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.

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