The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts

Which of the following disciplines provides study of relative motion between the parts of a machine

Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts

Which of the following is a lower pair

If two moving elements have surface contact in motion, such pair is known as

The example of lower pair is

Pulley in a belt drive acts as

The example of rolling pair is

Any point on a link connecting double slider crank chain will trace a

The purpose of a link is to

A universal joint is an example of

Rectilinear motion of piston is converted into rotary by

Pitch point on a cam is

The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be

The example of spherical pair is

Cross head and guides form a

A circular bar moving in a round hole is an example of

If some links are connected such that motion between them can take place in more than one direction, it is called

If there are L number of links in a mechanism then number of possible inversions is equal to

Kinematic pairs are those which have two elements that

The lower pair is a

Automobile steering gear is an example of

In higher pair, the relative motion is

Which of the following has sliding motion

The example of higher pair is

Which of the following mechanism is obtained from lower pair

Which of the following would constitute a link

The Scott-Russell mechanism consists of

Davis steering gear consists of

Ackermann steering gear consists of

A completely constrained motion can be transmitted with .

Oldham’s coupling is the

Sense of tangential acceleration of a link

A mechanism is an assemblage of

The number of links in pantograph mechanism is equal to

Elements of pairs held together mechanically is known as

Shaft revolving in a bearing is the following type of pair

Rectangular bar in a rectangular hole is the following type of pair

A foot step bearing and rotor of a vertical turbine form examples of

A slider crank chain consists of following numbers of turning and sliding pairs

Relationship between the number of links (L) and number of pairs (P) is

9. In problem 47, the chain is unconstrained when

In problem 47, the chain is constrained when

The tendency of a body to resist change from rest or motion is known as

The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

The advantage of the piston valve over D-slide valve is that in the former case

The Hooke’s joint consists of :

The Klein’s method of construction for reciprocating engine mechanism

It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by

The e.g. of a link in any mechanism would experience

In elliptical trammels

In automobiles the power is transmitted from gear box to differential through

The indicator using Watt mechanism is known as

The Ackermann steering mechanism is preferred to the Davis type in automobiles because

65. Transmission of power from the engine to the rear axle of an automobile is by means of

When a ship travels in a sea, which of the effect is more dangerous

In an ideal machine, the output as compared to input is

Governor is used in automobile to

In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed

For fluctuating loads, welsuited bearing is

Crowning on pulleys helps

Idler pulley is used

In multi-V-belt transmission, if one of the belt is broken, we have to change the

The moment on the pulley which produces rotation is called

Creep in belt drive is due to

TJie horse power transmitted by a belt is dependent upon

The locus of a point on a thread unwound from a cylinder will be

To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use

For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimidstroke respectively, is

Which of the following is false statement in respect of differences between machine and structure

If D1 and D2 be the diameters of driver and driven pulleys, then belt speed is proportional to (C) D1-D2.

Typewriter constitutes

Lower pairs are those which have

A point on a link connecting double slider crank chain traces a

A pantograph is a mechanism with

Kinematic pairs are those which have

If the opposite links of a four bar linkage are equal, the links will always form a

Higher pairs are those which have

A cam mechanism imparts following motion

A cam with a roller follower would con stitute following type of pair

The approximate straight line mechanism is a

“Open pairs are those which have

Peaucellier mechanism has

Hart mechanism has

A chain comprises of 5 links having 5 joints. Is it kinematic chain ?

The main disadvantage of the sliding pair is that it is

. For a kinematic chain to be considered as mechanism

. An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has

. Whitworth quick return mechanism is obtained by inversion of

. In its simplest form, a cam mechanism consists of following number of links

. Which of the following mechanisms produces mathematically an exact straight line motion

. In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

. A kinematic chain requires at least

. In a darg link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is

. The following is the inversion of slider crank chain mechanism

. Kinematic pairs are those which have

A typewriter mechanism has 7 number of binary joints, six links and none of higher pairs. The mechanism is

. In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

. In above example, the minimum length of the coupler will be

. In S.H.M., acceleration is proportional to

. For simple harmonic motion of the of follower, a cosine curve represents

. In S.H.M., the velocity vector w.r.t. displacement vector

. A body having moment of inertia o:m2 is rotating at 210 RPM and r with another body at rest having I 40 kg m2. The resultant speed after ing will be

. Inertia force acts

. The frequency of oscillation at compared to earth will be

. Polar moment of inertia (IP) of ac disc is to ht determined by suspen by a wire and noting the frequei oscillations (/) (C) Ip oc j

. If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be

. The Bifilar suspension method is used to determine

. Which is the false statement about the properties of instantaneous centre

. Instantaneous center of rotation of a link in a four bar mechanism lies on

. The number of links and instantaneous centers in a reciprocating engine mechanism are

. According to Kennedy’s theorem, if three bodies have plane motions, their instantaneous centers lie on

. In a rigid link OA, velocity of A w.r.t. will be

. Two systems shall be dynamically equivalent when

. The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

. The absolute acceleration of any point P in a link about center of rotation 0 is

. Angular acceleration of a link can be determined by dividing the

. Corioli’s component of acceleration exists whenever a point moves along a path that has

. The direction of Corioli’s component of acceleration is the direction

. In a shaper mechanism, the Corioli’s component of acceleration will

. The magnitude of tangential acceleration is equal to

. Tangential acceleration direction is

. Corioli’s component is encountered in

. Klein’s construction gives a graphica construction for

. Klein’s construction can be used to determine acceleration of various parts when the crank is at

. The number of centers in a crank driven slider crank mechanism are

. Corioli’s component acts

. The sense of Corioli’s component is such that it

. Klein’s construction can be used when

. Klein’s construction is useful to determine

. A circle passing through the pitch point with its center at the center of cam axis is known as

. The pressure angle of a cam depends upon

. Cam size depends upon

. Cylindrical cams can be classified as

. The maximum value of the pressure angle in case of cam is kept as

. For the same lift and same angle of ascent, a smaller base circle will give

. Cam angle is defined as the angle

. Angle of descent of cam is defined as the angle

. Angle of action of cam is defined as the angle

. Angle of dwell of cam is defined as the angle

. Angle of ascent of cam is defined as the angle