Q. According to I.B.R., the thickness of the boiler shell should not be less than

View solution

Q. A bolt has

View solution

Q. The material commonly used for machine tool bodies is

View solution

Q. The power transmitted by a belt drive is maximum when the maximum tension in the belt is __________ the centrifugal tension.

View solution

Q. The largest diameter of an external or internal screw thread is known as

View solution

Q. The gears are termed as medium velocity gears, if their peripheral velocity is

View solution

Q. In the levers of third type, the mechanical advantage is __________ one.

View solution

Q. The edges of the boiler plates are bevelled to an angle of

View solution

Q. Lewis form factor for 14½° composite and full depth involute system is (where T = Number of teeth)

View solution

Q. The stretching in a belt can be controlled by __________ the stress in the belt.

View solution

Q. The distribution of the forces along the length of key fitted in a shaft

View solution

Q. For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle)

View solution

Q. When a cylinder is subjected to a very high internal fluid pressure, the thin cylinder should be used.

View solution

Q. In a full journal bearing, the angle of contact of the bearing with the journal is

View solution

Q. In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be

View solution

Q. A cotter joint is used to connect two __________ rods.

View solution

Q. The product of the diametral pitch and circular pitch is equal to

View solution

Q. If T1 and T2 are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to

View solution

Q. The smallest diameter of an external or internal screw thread is known as

View solution

Q. The process which improves the machinability of steels, but lowers the hardness and tensile strength is

View solution