*/*_Klein's construction can be used to determine acceleration of various parts when the crank is at?

Right angles to the link of the stroke

*/*_The efficiency of a screw jack is maximum, when (where ≈í¬± = Helix angle, and ≈ì√ú = Angle of friction)?

≈í¬± = 90¬¨‚àû + ≈ì√ú

≈í¬± = 45¬¨‚àû + ≈ì√ú/2

≈í¬± = 45¬¨‚àû - ≈ì√ú/2

≈í¬± = 90¬¨‚àû + ≈ì√ú

≈í¬± = 90¬¨‚àû - ≈ì√ú

*/*_The arrangement is called bevel gearing, when two __________ are connected by gears.?

Non-intersecting and non-coplanar shafts

Intersecting and coplanar shafts

Non-intersecting and non-coplanar shafts

Parallel and non-coplanar shafts

*/*_The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where ≈í¬• = Static deflection of a simply supported shaft due to the point load)?

0.5615/‚Äö√ √∂≈í¬•

0.4985/‚Äö√ √∂≈í¬•

0.5615/‚Äö√ √∂≈í¬•

0.571/‚Äö√ √∂≈í¬•

0.6253/‚Äö√ √∂≈í¬•

*/*_In a mechanism, the fixed instantaneous centers are those centers which?

Vary with the configuration of the mechanism

Remain in the same place for all configurations of the mechanism

Vary with the configuration of the mechanism

Moves as the mechanism moves, but joints are of permanent nature

*/*_In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)?

(S‚Äö√á√Ö + S‚Äö√á√á) / 2h

(S‚Äö√á√Ö + S‚Äö√á√á) / h

(S‚Äö√á√Ö - S‚Äö√á√á) / h

(S‚Äö√á√Ö + S‚Äö√á√á) / 2h

(S‚Äö√á√Ö - S‚Äö√á√á) / 2h

*/*_The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ≈ì√¢ = Displacement of the particle from mean position)?

≈ì√¢¬¨‚â§ ‚Äö√ √∂(x¬¨‚â§ - r¬¨‚â§)

≈ì√¢ ‚Äö√ √∂(x¬¨‚â§ - r¬¨‚â§)

≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ - x¬¨‚â§)

≈ì√¢¬¨‚â§ ‚Äö√ √∂(x¬¨‚â§ - r¬¨‚â§)

≈ì√¢¬¨‚â§ ‚Äö√ √∂(r¬¨‚â§ - x¬¨‚â§)

*/*_The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ≈ì√¢ = Angular velocity of the cam shaft)?

≈ì√¢ (r‚Äö√á√Ö r‚Äö√á√á) cos≈í‚àè

≈ì√¢ (r‚Äö√á√Ö r‚Äö√á√á) sin≈í‚àè

≈ì√¢ (r‚Äö√á√Ö + r‚Äö√á√á) sin≈í‚àè sec2≈í‚àè

≈ì√¢ (r‚Äö√á√Ö r‚Äö√á√á) cos≈í‚àè

≈ì√¢ (r‚Äö√á√Ö + r‚Äö√á√á) cos≈í‚àè cosec2≈í‚àè

*/*_In a single slider crank chain?

Each of the four pairs is a turning pair

One is a turning pair and three are sliding pairs

Two are turning pairs and two are sliding pairs

Three are turning pairs and one is a sliding pair

*/*_The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r‚Äö√á√Ö and r‚Äö√á√á = External and internal radii of collar respectively)?

(2/3) ≈í¬∫ W (r‚Äö√á√Ö + r‚Äö√á√á)

(1/2) ≈í¬∫ W (r‚Äö√á√Ö + r‚Äö√á√á)

(2/3) ≈í¬∫ W (r‚Äö√á√Ö + r‚Äö√á√á)

(1/2) ≈í¬∫ W [(r‚Äö√á√Ö¬¨‚â• - r‚Äö√á√á¬¨‚â•)/(r‚Äö√á√Ö¬¨‚â§ - r‚Äö√á√á¬¨‚â§)]

(2/3) ≈í¬∫ W [(r‚Äö√á√Ö¬¨‚â• - r‚Äö√á√á¬¨‚â•)/(r‚Äö√á√Ö¬¨‚â§ - r‚Äö√á√á¬¨‚â§)]

*/*_The partial balancing means?

Balancing partially revolving masses

Balancing partially reciprocating masses

*/*_For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that?

Governor B is more sensitive than governor A

Governor A is more sensitive than governor B

Governor B is more sensitive than governor A

Both governors A and B are equally sensitive

*/*_Angle of action of cam is defined as the angle?

Of rotation of the cam for a definite displacement of the follower

Through which the cam rotates during the period in which the follower remains in the highest position

Moved by the cam from the instant the follower begins to rise, till it reaches its highest position

Moved by the cam from beginning of ascent to the termination of descent

*/*_Which of the following is an inversion of a single slider crank chain??

Rotary internal combustion engine

*/*_The unbalanced force due to reciprocating masses?

Varies in direction but constant in magnitude

Varies in magnitude but constant in direction

Varies in direction but constant in magnitude

Varies in magnitude and direction both

Constant in magnitude and direction both

*/*_In a steam engine, the link constitutes a?

Piston, piston rod and cross-head

Connecting rod with big and small end brasses, caps and bolts

Crank pin, crankshaft and flywheel

*/*_In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle ≈í‚àè, the angular velocity of the connecting rod is given by?

≈ì√¢ sin≈í‚àè/(n¬¨‚â§ - sin¬¨‚â§≈í‚àè)1/2

≈ì√¢ cos≈í‚àè/(n¬¨‚â§ - cos¬¨‚â§≈í‚àè)1/2

≈ì√¢ sin≈í‚àè/(n¬¨‚â§ - cos¬¨‚â§≈í‚àè)1/2

≈ì√¢ cos≈í‚àè/(n¬¨‚â§ - sin¬¨‚â§≈í‚àè)1/2

*/*_When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be?

≈ì√¢¬¨‚â§ r {n/(n + 1)}

≈ì√¢¬¨‚â§ r {(n + 1)/n}

≈ì√¢¬¨‚â§ r {(n - 1)/n}

≈ì√¢¬¨‚â§ r {n/(n + 1)}

≈ì√¢¬¨‚â§ r {n/(n - 1)}

*/*_When the sleeve of a Porter governor moves upwards, the governor speed?

First increases and then decreases

*/*_In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines?

The algebraic sum of the primary forces must be equal to zero

The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

*/*_For a kinematic chain to be considered as mechanism?

None of the links should be fixed

*/*_The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line?

Perpendicular to line as per (A)

Joining the corresponding points

Perpendicular to line as per (A)

Not possible to determine with these data

At 45¬¨‚àû to line as per (A)

*/*_The centre of gravity of a coupler link in a four bar mechanism will experience?

Both linear and angular acceleration

977 + Mcqs in Theory Of Machine Page 11 McqOptions

501.	/_Shaft revolving in a bearing is the following type of pair?
A.	Lower pair
B.	Higher pair
C.	Spherical pair
D.	Cylindrical pair
Answer» B. Higher pair

502.	/_A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by?
A.	2 W CE / CS
B.	W CE / 2CS
C.	W CE / CS
D.	W CS / 2CE
Answer» C. W CE / CS

503.	/_The Bifilar suspension method is used to determine?
A.	Natural frequency of vibration
B.	Position of balancing weights
C.	Moment of inertia
D.	Centripetal acceleration
Answer» D. Centripetal acceleration

504.	/_The Coriolis component of acceleration depends upon?
A.	Velocity of slider
B.	Angular velocity of the link
C.	Both (A) and (B)
D.	None of these
Answer» D. None of these

505.	/_Which of the following mechanism is an approximate straight line motion mechanism??
A.	Watt's mechanism
B.	Grasshopper mechanism
C.	Robert's mechanism
D.	All of these
Answer» E.

506.	/_Klein's construction can be used to determine acceleration of various parts when the crank is at?
A.	Inner dead centre
B.	Outer dead centre
C.	Right angles to the link of the stroke
D.	All of the above
Answer» E.

507.	/_When a slider moves on a fixed link having curved surface, their instantaneous centre lies?
A.	On their point of contact
B.	At the centre of curvature
C.	At the centre of circle
D.	At the pin joint
Answer» C. At the centre of circle

508.	/_The efficiency of a screw jack is maximum, when (where ≈í¬± = Helix angle, and ≈ì√ú = Angle of friction)?
A.	≈í¬± = 45¬¨‚àû + ≈ì√ú/2
B.	≈í¬± = 45¬¨‚àû - ≈ì√ú/2
C.	≈í¬± = 90¬¨‚àû + ≈ì√ú
D.	≈í¬± = 90¬¨‚àû - ≈ì√ú
Answer» C. ≈í¬± = 90¬¨‚àû + ≈ì√ú

509.	/_The arrangement is called bevel gearing, when two __________ are connected by gears.?
A.	Intersecting and coplanar shafts
B.	Non-intersecting and non-coplanar shafts
C.	Parallel and coplanar shafts
D.	Parallel and non-coplanar shafts
Answer» B. Non-intersecting and non-coplanar shafts

510.	/_The motion between a pair which takes place in __________ is known as incompletely constrained motion.?
A.	One direction only
B.	Two directions only
C.	More than one direction
D.	None of these
Answer» D. None of these

511.	/_The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where ≈í¬• = Static deflection of a simply supported shaft due to the point load)?
A.	0.4985/‚Äö√ √∂≈í¬•
B.	0.5615/‚Äö√ √∂≈í¬•
C.	0.571/‚Äö√ √∂≈í¬•
D.	0.6253/‚Äö√ √∂≈í¬•
Answer» B. 0.5615/‚Äö√ √∂≈í¬•

512.	/_Which type of gearing is used in steering system of an automobile??
A.	Rack and pinion
B.	Worm and wheel
C.	Spiral gears
D.	None of the above
Answer» B. Worm and wheel

517.	/_When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.?
A.	Upward
B.	Downward
C.	Forward
D.	Backward
Answer» C. Forward

524.	/_A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a?
A.	Structure
B.	Mechanism
C.	Kinematic chain
D.	Inversion
Answer» D. Inversion

526.	/_If the opposite links of a four bar linkage are equal, the links will always form a?
A.	Triangle
B.	Rectangle
C.	Parallelogram
D.	Pentagon
Answer» D. Pentagon

513.	/_In a mechanism, the fixed instantaneous centers are those centers which?
A.	Remain in the same place for all configurations of the mechanism
B.	Vary with the configuration of the mechanism
C.	Moves as the mechanism moves, but joints are of permanent nature
D.	None of the above
Answer» B. Vary with the configuration of the mechanism

514.	/_In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)?
A.	(S‚Äö√á√Ö + S‚Äö√á√á) / h
B.	(S‚Äö√á√Ö - S‚Äö√á√á) / h
C.	(S‚Äö√á√Ö + S‚Äö√á√á) / 2h
D.	(S‚Äö√á√Ö - S‚Äö√á√á) / 2h
Answer» C. (S‚Äö√á√Ö + S‚Äö√á√á) / 2h

515.	/_The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ≈ì√¢ = Displacement of the particle from mean position)?
A.	≈ì√¢ ‚Äö√ √∂(x¬¨‚â§ - r¬¨‚â§)
B.	≈ì√¢ ‚Äö√ √∂(r¬¨‚â§ - x¬¨‚â§)
C.	≈ì√¢¬¨‚â§ ‚Äö√ √∂(x¬¨‚â§ - r¬¨‚â§)
D.	≈ì√¢¬¨‚â§ ‚Äö√ √∂(r¬¨‚â§ - x¬¨‚â§)
Answer» C. ≈ì√¢¬¨‚â§ ‚Äö√ √∂(x¬¨‚â§ - r¬¨‚â§)

516.	/_The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ≈ì√¢ = Angular velocity of the cam shaft)?
A.	≈ì√¢ (r‚Äö√á√Ö r‚Äö√á√á) sin≈í‚àè
B.	≈ì√¢ (r‚Äö√á√Ö + r‚Äö√á√á) sin≈í‚àè sec2≈í‚àè
C.	≈ì√¢ (r‚Äö√á√Ö r‚Äö√á√á) cos≈í‚àè
D.	≈ì√¢ (r‚Äö√á√Ö + r‚Äö√á√á) cos≈í‚àè cosec2≈í‚àè
Answer» C. ≈ì√¢ (r‚Äö√á√Ö r‚Äö√á√á) cos≈í‚àè

518.	/_The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.?
A.	Inner edge
B.	Outer edge
C.	Corners
D.	None of these
Answer» B. Outer edge

519.	/_In a single slider crank chain?
A.	Each of the four pairs is a turning pair
B.	One is a turning pair and three are sliding pairs
C.	Two are turning pairs and two are sliding pairs
D.	Three are turning pairs and one is a sliding pair
Answer» E.

520.	/_The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r‚Äö√á√Ö and r‚Äö√á√á = External and internal radii of collar respectively)?
A.	(1/2) ≈í¬∫ W (r‚Äö√á√Ö + r‚Äö√á√á)
B.	(2/3) ≈í¬∫ W (r‚Äö√á√Ö + r‚Äö√á√á)
C.	(1/2) ≈í¬∫ W [(r‚Äö√á√Ö¬¨‚â• - r‚Äö√á√á¬¨‚â•)/(r‚Äö√á√Ö¬¨‚â§ - r‚Äö√á√á¬¨‚â§)]
D.	(2/3) ≈í¬∫ W [(r‚Äö√á√Ö¬¨‚â• - r‚Äö√á√á¬¨‚â•)/(r‚Äö√á√Ö¬¨‚â§ - r‚Äö√á√á¬¨‚â§)]
Answer» B. (2/3) ≈í¬∫ W (r‚Äö√á√Ö + r‚Äö√á√á)

521.	/_The partial balancing means?
A.	Balancing partially revolving masses
B.	Balancing partially reciprocating masses
C.	Best balancing of engines
D.	All of these
Answer» C. Best balancing of engines

522.	/_For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that?
A.	Governor A is more sensitive than governor B
B.	Governor B is more sensitive than governor A
C.	Both governors A and B are equally sensitive
D.	None of the above
Answer» B. Governor B is more sensitive than governor A

523.	/_Angle of action of cam is defined as the angle?
A.	Of rotation of the cam for a definite displacement of the follower
B.	Through which the cam rotates during the period in which the follower remains in the highest position
C.	Moved by the cam from the instant the follower begins to rise, till it reaches its highest position
D.	Moved by the cam from beginning of ascent to the termination of descent
Answer» E.

Explore topic-wise MCQs in Mechanical Engineering.

*/*_Shaft revolving in a bearing is the following type of pair?

*/*_A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by?

*/*_The Bifilar suspension method is used to determine?

*/*_The Coriolis component of acceleration depends upon?

*/*_Which of the following mechanism is an approximate straight line motion mechanism??

*/*_Klein's construction can be used to determine acceleration of various parts when the crank is at?

*/*_When a slider moves on a fixed link having curved surface, their instantaneous centre lies?

*/*_The efficiency of a screw jack is maximum, when (where ≈í¬± = Helix angle, and ≈ì√ú = Angle of friction)?

*/*_The arrangement is called bevel gearing, when two __________ are connected by gears.?

*/*_The motion between a pair which takes place in __________ is known as incompletely constrained motion.?

*/*_The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where ≈í¬• = Static deflection of a simply supported shaft due to the point load)?

*/*_Which type of gearing is used in steering system of an automobile??

*/*_In a mechanism, the fixed instantaneous centers are those centers which?

*/*_In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)?

*/*_The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ≈ì√¢ = Displacement of the particle from mean position)?

*/*_The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ≈ì√¢ = Angular velocity of the cam shaft)?

*/*_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 distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.?

*/*_In a single slider crank chain?

*/*_The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r‚Äö√á√Ö and r‚Äö√á√á = External and internal radii of collar respectively)?

*/*_The partial balancing means?

*/*_For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that?

*/*_Angle of action of cam is defined as the angle?

*/*_A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a?

*/*_Which of the following is an inversion of a single slider crank chain??

*/*_If the opposite links of a four bar linkage are equal, the links will always form a?

*/*_The unbalanced force due to reciprocating masses?

*/*_TJIE horse power transmitted by a belt is dependent upon?

*/*_In a steam engine, the link constitutes a?

*/*_The secondary unbalanced force is maximum __________ in one revolution of the crank.?

*/*_In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle ≈í‚àè, the angular velocity of the connecting rod is given by?

*/*_The Coriolis component of acceleration exists whenever a point moves along a path that has?

*/*_When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be?

*/*_When the sleeve of a Porter governor moves upwards, the governor speed?

*/*_The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as?

*/*_In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines?

*/*_For a kinematic chain to be considered as mechanism?

*/*_The absolute acceleration of any point ‚Äö√Ñ√≤P‚Äö√Ñ√¥ in a link about center of rotation ‚Äö√Ñ√≤O‚Äö√Ñ√¥ is?

*/*_Rectilinear motion of piston is converted into rotary by?

*/*_A Hartnell governor is a?

*/*_The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line?

*/*_Transmission angle is the angle between?

*/*_In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.?

*/*_The centre of gravity of a coupler link in a four bar mechanism will experience?

*/*_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?

*/*_A point on a connecting link (excluding end points) of a double slider crank mechanism traces a?

*/*_In a pantograph, all the pairs are?

*/*_The sensitiveness of the governor __________ as the speed range decreases.?

*/*_A pantograph is a mechanism with?

/_Shaft revolving in a bearing is the following type of pair?

/_A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by?

/_The Bifilar suspension method is used to determine?

/_The Coriolis component of acceleration depends upon?

/_Which of the following mechanism is an approximate straight line motion mechanism??

/_Klein's construction can be used to determine acceleration of various parts when the crank is at?

/_When a slider moves on a fixed link having curved surface, their instantaneous centre lies?

/_The efficiency of a screw jack is maximum, when (where ≈í¬± = Helix angle, and ≈ì√ú = Angle of friction)?

/_The arrangement is called bevel gearing, when two __________ are connected by gears.?

/_The motion between a pair which takes place in __________ is known as incompletely constrained motion.?

/_The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where ≈í¬• = Static deflection of a simply supported shaft due to the point load)?

/_Which type of gearing is used in steering system of an automobile??

/_In a mechanism, the fixed instantaneous centers are those centers which?

/_In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)?

/_The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ≈ì√¢ = Displacement of the particle from mean position)?

/_The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ≈ì√¢ = Angular velocity of the cam shaft)?

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

/_In a single slider crank chain?

/_The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r‚Äö√á√Ö and r‚Äö√á√á = External and internal radii of collar respectively)?

/_The partial balancing means?

/_For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that?

/_Angle of action of cam is defined as the angle?

/_A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a?

/_Which of the following is an inversion of a single slider crank chain??

/_If the opposite links of a four bar linkage are equal, the links will always form a?

/_The unbalanced force due to reciprocating masses?

/_TJIE horse power transmitted by a belt is dependent upon?

/_In a steam engine, the link constitutes a?

/_The secondary unbalanced force is maximum __________ in one revolution of the crank.?

/_In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle ≈í‚àè, the angular velocity of the connecting rod is given by?

/_The Coriolis component of acceleration exists whenever a point moves along a path that has?

/_When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be?

/_When the sleeve of a Porter governor moves upwards, the governor speed?

/_The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as?

/_In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines?

/_For a kinematic chain to be considered as mechanism?

/_The absolute acceleration of any point ‚Äö√Ñ√≤P‚Äö√Ñ√¥ in a link about center of rotation ‚Äö√Ñ√≤O‚Äö√Ñ√¥ is?

/_Rectilinear motion of piston is converted into rotary by?

/_A Hartnell governor is a?

/_The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line?

/_Transmission angle is the angle between?

/_In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.?

/_The centre of gravity of a coupler link in a four bar mechanism will experience?

/_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?

/_A point on a connecting link (excluding end points) of a double slider crank mechanism traces a?

/_In a pantograph, all the pairs are?

/_The sensitiveness of the governor __________ as the speed range decreases.?

/_A pantograph is a mechanism with?

525.	/_Which of the following is an inversion of a single slider crank chain??
A.	Pendulum pump
B.	Oscillating cylinder engine
C.	Rotary internal combustion engine
D.	All of these
Answer» E.

527.	/_The unbalanced force due to reciprocating masses?
A.	Varies in magnitude but constant in direction
B.	Varies in direction but constant in magnitude
C.	Varies in magnitude and direction both
D.	Constant in magnitude and direction both
Answer» B. Varies in direction but constant in magnitude

528.	/_TJIE horse power transmitted by a belt is dependent upon?
A.	Tension on tight side of belt
B.	Tension on slack side of belt
C.	Radius of pulley
D.	All of the above
Answer» E.

529.	/_In a steam engine, the link constitutes a?
A.	Piston, piston rod and cross-head
B.	Connecting rod with big and small end brasses, caps and bolts
C.	Crank pin, crankshaft and flywheel
D.	All of the above
Answer» E.

530.	/_The secondary unbalanced force is maximum __________ in one revolution of the crank.?
A.	Two times
B.	Four times
C.	Eight times
D.	Sixteen times
Answer» C. Eight times

531.	/_In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle ≈í‚àè, the angular velocity of the connecting rod is given by?
A.	≈ì√¢ sin≈í‚àè/(n¬¨‚â§ - sin¬¨‚â§≈í‚àè)1/2
B.	≈ì√¢ cos≈í‚àè/(n¬¨‚â§ - cos¬¨‚â§≈í‚àè)1/2
C.	≈ì√¢ sin≈í‚àè/(n¬¨‚â§ - cos¬¨‚â§≈í‚àè)1/2
D.	≈ì√¢ cos≈í‚àè/(n¬¨‚â§ - sin¬¨‚â§≈í‚àè)1/2
Answer» E.

532.	/_The Coriolis component of acceleration exists whenever a point moves along a path that has?
A.	Linear displacement
B.	Rotational motion
C.	Gravitational acceleration
D.	Tangential acceleration
Answer» C. Gravitational acceleration

533.	/_When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be?
A.	≈ì√¢¬¨‚â§ r {(n + 1)/n}
B.	≈ì√¢¬¨‚â§ r {(n - 1)/n}
C.	≈ì√¢¬¨‚â§ r {n/(n + 1)}
D.	≈ì√¢¬¨‚â§ r {n/(n - 1)}
Answer» C. ≈ì√¢¬¨‚â§ r {n/(n + 1)}

534.	/_When the sleeve of a Porter governor moves upwards, the governor speed?
A.	Increases
B.	Decreases
C.	Remain unaffected
D.	First increases and then decreases
Answer» B. Decreases

535.	/_The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as?
A.	Structure
B.	Machine
C.	Inversion
D.	Compound mechanism
Answer» D. Compound mechanism