326. The mechanism consisting of three turning pairs and one sliding pair, is called a
327. A system of masses rotating in different parallel planes is in dynamic balance if the
328. The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called
329. A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become
330. The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is
331. The axis of precession is __________ to the plane in which the axis of spin is going to rotate.
332. Bifilar suspension method is used to find the
333. The equation of motion for a vibrating system with viscous damping is
If the roots of this equation are real, then the system will be
334. The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as
335. The motion of a shaft in a circular hole is an example of
336. A spring controlled governor is said to be unstable when the controlling force
337. The equivalent length of a simple pendulum depends upon the distance between the point of suspension and the centre of gravity.
338. Balancing of rotating and reciprocating parts of an engine is necessary when it runs at
339. When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a
340. In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as
341. When no external force acts on a body, after giving it an initial displacement, the body is said to have free vibrations.
342. Which of the following is an example of sliding pair?
343. The coriolis component of acceleration exists whenever apoint moves along a path that has
344. In a steam engine, the distance by which the inner edge of the D-slide valve overlaps the steam port is called lead.
345. A shaft of mass (mc)and stiffness (s) is fixed at one end and carries a mass (m) at the other end. The natural frequency of its transverse vibration is same as for longitudinal vibration.
346. The idiom that means “face the problem” is:?
347. The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.
348. The stress induced in a body will be shear stress, when it is subjected to
349. A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become
350. When a body is subjected to longitudinal vibrations, the stress induced in a body will be tensile or compressive stress.