Machine Design Questions

• An open belt drive is used when
• A transmission shaft includes
• In order to obtain the bolts of uniform strength, an axial hole is drilled through the head as far as the threaded portion such that the area of shank becomes equal to the root area of the thread.
• According to Guest's theory, the failure occurs at a point in a member when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in simple tension test.
• Circumferential joint in boilers is used to get the required length of a boiler.
• Surface endurance limit of gear material is dependent upon its
• The load cup of a screw jack is made separate from the head of the spindle to
• A crankshaft is a __________ shaft.
• Which of the following statement is wrong?
• The ball bearings are provided with a cage
• The centre distance between two meshing involute gears is equal to
• The toughness of a material __________ when it is heated.
• In a flange coupling, the flanges are coupled together by means of
• Which of the following material has the maximum ductility?
• 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)
• The application of third type levers is found in
• Two shafts A and B under pure torsion are of identical length and identical weight and are made of the same material. The shaft A is solid and the shaft B is hollow. We can say that
• The constant factor in case of R10 series of preferred numbers is
• The sleeve or muff coupling is designed as a
• A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)