The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.

The relative velocity of B with respect to A in a rigid link AB is

The coriolis component of acceleration exists whenever apoint moves along a path that has

A mechanism consisting of more than four links is called a compound mechanism.

The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

Two heavy rotating masses are connected by shafts of lengths l₁, l₂ and l₃ and the corresponding diameters are d₁, d₂ and d₃. This system is reduced to a torsionally equivalent system having uniform diameter d = d₁ of the shaft. The equivalent length of the shaft is

The height of a Watt's governor (in metres) is equal to (where N = Speed of the arm and ball about the spindle axis)

When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

According to law of gearing, the common normal at the point of contact between a pair of teeth must always pass through the pitch point.

The height of a Watt's governor (in metres) is equal to (where N = Speed of the arm and ball about the spindle axis)

The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

According to law of gearing, the common normal at the point of contact between a pair of teeth must always pass through the pitch point.

The Klein's method of construction for reciprocating engine mechanism

Two heavy rotating masses are connected by shafts of lengths l₁, l₂ and l₃ and the corresponding diameters are d₁, d₂ and d₃. This system is reduced to a torsionally equivalent system having uniform diameter d = d₁ of the shaft. The equivalent length of the shaft is

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

The stress induced in a body will be shear stress, when it is subjected to

Effort of a governor is the

The equivalent length of a simple pendulum depends upon the distance between the point of suspension and the centre of gravity.

The acceleration of a particle moving with simple harmonic motion, at any instant is given by

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

A pair is said to be a kinematic pair, if the relative motion between them is completely or successfully constrained.

When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

The maximum displacement of a body, from its mean position is called amplitude.

A Hartnell governor has its controlling force (F_c) given by F_c = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

In a pantograph, all the pairs are

The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as

In a steam engine, the distance by which the inner edge of the D-slide valve overlaps the steam port is called lead.

A simple spring-mass vibrating system has a natural frequency of f_n. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

Two heavy rotating masses are connected by shafts of lengths l₁, l₂ and l₃ and the corresponding diameters are d₁, d₂ and d₃. This system is reduced to a torsionally equivalent system having uniform diameter d = d₁ of the shaft. The equivalent length of the shaft is

The unbalanced force due to reciprocating masses

The motion between a pair which takes place in __________ is known as incompletely constrained motion.

The centre of gravity of a coupler link in a four bar mechanism will experience

A Watt's governor is a spring loaded governor.

The driving and driven shafts connected by a Hooke's joint will have equal speeds, if

Under logarithmic decrement, the amplitude of successive vibrations are

A machine mounted on a single coil spring has a period of free vibration of t_p . 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

The equation of motion for a vibrating system with viscous damping is
,
if the roots of the equation are __________ then the system will be under damped.

The relation between the controlling force (F_c) and radius of rotation (r) for a stable spring controlled governor is

The critical speed of a shaft depends upon its

The pressure angle for involute gears depends upon the size of teeth.

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

Balancing of rotating and reciprocating parts of an engine is necessary when it runs at

The partial balancing means

The relation between the controlling force (F_c) and radius of rotation (r) for a stable spring controlled governor is

A governor is said to be isochronous when range of speed is zero for all radii of rotation of the balls within the working range, neglecting friction.

The pitching of a ship is assumed to take place with simple harmonic motion.

There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears areandrespectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is

The acceleration of the particle moving with simple harmonic motion is __________ at the mean position.