Q. A triple riveted butt joint with double straps of unequal width is to be designed for a boiler shell. The pitch of the rivets in the outer row is double the pitch in the inner row and zig-zag riveting is proposed. Which of the following statement is correct?

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Q. The form factor of a helical gear __________ with the increase in the helix angle.

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Q. The taper on a rectangular sunk key is

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Q. When carbon in the cast iron is in the form of cementite, the cast iron will be of white colour.

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Q. A type of brake commonly used in motor cars is a

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Q. In a nut and bolt, the diameter at which the ridges on the bolt are in complete touch with the ridges of the corresponding nut, is called pitch diameter.

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Q. A double strap butt joint (with equal straps) is

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Q. For a bevel gear having the pitch angle θ , the ratio of formative number of teeth (TE) to actual number of teeth (T) is

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Q. The modulus of elasticity for mild steel is approximately equal to

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Q. A connecting rod subjected to an axial load may buckle with

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Q. When the lubricant is forced between the journal and the bearing by external pressure, the bearing is called hydrostatic lubricated bearing.

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Q. Crushing resistance required to crush the rivet per pitch length is

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Q. Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material)

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Q. The buttress threads have low frictional resistance characteristic of the square threads and have the same strength of V-threads.

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Q. The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

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Q. The property of a material which enables it to resist fracture due to high impact loads, is called toughness.

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Q. The resultant axial load on a bolt depends upon

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Q. Wire ropes as compared to cotton ropes

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Q. The thickness of key is usually taken equal to one-sixth of diameter of shaft.

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Q. Two helical springs of the same material and of equal circular cross-section, 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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