Q. Which of the following statement is correct for involute gears?

View solution

Q. Which of the following governor is used to drive a gramophone?

View solution

Q. In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to

View solution

Q. The ball and socket joint is an example of screw pair.

View solution

Q. A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

View solution

Q. Which of the following statement is wrong?

View solution

Q. When the particles of a body moves perpendicular to its axis, then the body is said to have

View solution

Q. A sliding pair has a completely constrained motion.

View solution

Q. Power of a governor is the

View solution

Q. The power from the engine to the rear axle of an automobile is transmitted by means of

View solution

Q. A flywheel is used to control the mean speed of an engine caused by the variations in load.

View solution

Q. The equivalent length of a simple pendulum which gives the same frequency as a compound pendulum is

View solution

Q. The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called

View solution

Q. The maximum efficiency of spiral gears is (where θ = Shaft angle, and φ = Friction angle)

View solution

Q. When the crank is at the inner dead centre, in a reciprocating steam engine, then the acceleration of the piston will be

View solution

Q. When the tip of a tooth undercuts the root on its mating gear, it is known as interference.

View solution

Q. Under logarithmic decrement, the amplitude of successive vibrations are

View solution

Q. The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction)

View solution

Q. A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is

View solution

Q. In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is Constant, then

View solution