Which gear is used for connecting two coplanar and intersecting shafts?
Which gear is used for connecting two coplanar and intersecting shafts?
When a point at the end of a link moves with constant angular velocity, its acceleration will have
When a point at the end of a link moves with constant angular velocity, its acceleration will have
The pair is known as a higher pair, when the relative motion between the elements of a pair is
The pair is known as a higher pair, when the relative motion between the elements of a pair is
Flexible coupling is used because
Flexible coupling is used because
If the damping factor for a vibrating system is unity, then the system will be
If the damping factor for a vibrating system is unity, then the system will be
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be
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
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
For a kinematic chain to be considered as mechanism
For a kinematic chain to be considered as mechanism
When a body is subjected to transverse vibrations, the stress induced in a body will be
When a body is subjected to transverse vibrations, the stress induced in a body will be
The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called
The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)
Angle of dwell of cam is defined as the angle
Angle of dwell of cam is defined as the angle
When the sleeve of a Porter governor moves upwards, the governor speed
When the sleeve of a Porter governor moves upwards, the governor speed
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is
The power of a Porter governor is equal to
The power of a Porter governor is equal to
Which of the following is an inversion of Single slider crank chain?
Which of the following is an inversion of Single slider crank chain?
In automobiles the power is transmitted from gear box to differential through
In automobiles the power is transmitted from gear box to differential through
________ is an inversion of Double slider crank chain.
________ is an inversion of Double slider crank chain.
Which of the following is an inversion of a single slider crank chain?
Which of the following is an inversion of a single slider crank chain?
The Klein's diagram is used when
The Klein's diagram is used when
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called
The velocity of a body moving with simple harmonic motion is __________ at the mean position.
The velocity of a body moving with simple harmonic motion is __________ at the mean position.
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, if N coincides with O, then
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, if N coincides with O, then
Angle of ascent of cam is defined as the angle
Angle of ascent of cam is defined as the angle
The unbalanced force due to reciprocating masses
The unbalanced force due to reciprocating masses
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
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
If the opposite links of a four bar linkage are equal, the links will always form a
If the opposite links of a four bar linkage are equal, the links will always form a
In a radial cam, the follower moves
In a radial cam, the follower moves
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is
The flank of the tooth is the surface of the tooth __________ the pitch surface.
The flank of the tooth is the surface of the tooth __________ the pitch surface.
When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be
When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be
In a simple train of wheels, the velocity ratio __________ the intermediate wheels.
In a simple train of wheels, the velocity ratio __________ the intermediate wheels.
A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a
A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line
The relation between number of links (l) and number of joints (j) in a kinematic chain is
The relation between number of links (l) and number of joints (j) in a kinematic chain is
In higher pair, the relative motion is
In higher pair, the relative motion is
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be
Which of the following is a higher pair?
Which of the following is a higher pair?
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other.
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other.
Which of the following statement is correct?
Which of the following statement is correct?
The periodic time of one oscillation for a simple pendulum is
The periodic time of one oscillation for a simple pendulum is
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.
Angle of action of cam is defined as the angle
Angle of action of cam is defined as the angle
When a point moves along a straight line, its acceleration will have
When a point moves along a straight line, its acceleration will have
The secondary unbalanced force is maximum __________ in one revolution of the crank.
The secondary unbalanced force is maximum __________ in one revolution of the crank.
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines
Which gear train is used for higher velocity ratios in a small space?
Which gear train is used for higher velocity ratios in a small space?
The primary unbalanced force is maximum _________ in one revolution of the crank.
The primary unbalanced force is maximum _________ in one revolution of the crank.
In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to
In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then
Klein's construction is useful to determine
Klein's construction is useful to determine
The Coriolis component of acceleration exists whenever a point moves along a path that has
The Coriolis component of acceleration exists whenever a point moves along a path that has
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
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
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called
Which of the following statement is correct?
Which of the following statement is correct?
The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be
The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to
The Klein's diagram is useful to find
The Klein's diagram is useful to find
Sense of tangential acceleration of a link
Sense of tangential acceleration of a link
The steering of a ship means
The steering of a ship means
In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular velocity of the connecting rod is given by
In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular velocity of the connecting rod is given by
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 disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?
Idler pulley is used
Idler pulley is used
Whirling speed of the shaft is the speed at which
Whirling speed of the shaft is the speed at which
When the sleeve of a Porter governor moves downwards, the governor speed
When the sleeve of a Porter governor moves downwards, the governor speed
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as
The instantaneous centers which vary with the configuration of mechanism are called
The instantaneous centers which vary with the configuration of mechanism are called
A higher pair has__________.
A higher pair has__________.
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
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 statement is correct?
Which of the following statement is correct?
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be
Which of the following mechanisms produces mathematically an exact straight line motion?
Which of the following mechanisms produces mathematically an exact straight line motion?
Which of the following statement is correct?
Which of the following statement is correct?
Which of the following property of the instantaneous center is correct?
Which of the following property of the instantaneous center is correct?
The Coriolis component of acceleration leads the sliding velocity by
The Coriolis component of acceleration leads the sliding velocity by
When a ship travels in a sea, which of the effect is more dangerous
When a ship travels in a sea, which of the effect is more dangerous
TJIE horse power transmitted by a belt is dependent upon
TJIE horse power transmitted by a belt is dependent upon
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)
Cam angle is defined as the angle
Cam angle is defined as the angle
In its simplest form, a cam mechanism consists of following number of links
In its simplest form, a cam mechanism consists of following number of links
With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to
With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to
The example of rolling pair is
The example of rolling pair is
Any point on a link connecting double slider crank chain will trace a
Any point on a link connecting double slider crank chain will trace a
The train value of a gear train is
The train value of a gear train is
The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as
The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as
A Hartnell governor is a
A Hartnell governor is a
The frequency of oscillation of a torsional pendulum is
The frequency of oscillation of a torsional pendulum is
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is
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 inertia forces arising from the combined effect of the mass and the motion of the parts?
To connect two parallel and coplanar shafts the following type of gearing is used
To connect two parallel and coplanar shafts the following type of gearing is used
If some links are connected such that motion between them can take place in more than one direction, it is called
If some links are connected such that motion between them can take place in more than one direction, it is called
If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the
If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the
According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a
According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a
In order to give a complete secondary balance of a multi-cylinder inline engine,
In order to give a complete secondary balance of a multi-cylinder inline engine,
Coriolis component acts
Coriolis component acts
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to
The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is
The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is
The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.
The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.
Coriolis component is encountered in
Coriolis component is encountered in
Which of the following is an inversion of a double slider crank chain?
Which of the following is an inversion of a double slider crank chain?
A rigid body possesses ________degrees of freedom
A rigid body possesses ________degrees of freedom
The number of links and instantaneous centers in a reciprocating engine mechanism are
The number of links and instantaneous centers in a reciprocating engine mechanism are
The two elements of a pair are said to form a _________ when they permit relative motion between them.
The two elements of a pair are said to form a _________ when they permit relative motion between them.
A system of masses rotating in different parallel planes is in dynamic balance if the
A system of masses rotating in different parallel planes is in dynamic balance if the
Angle of descent of cam is defined as the angle
Angle of descent of cam is defined as the angle
Pulley in a belt drive acts as
Pulley in a belt drive acts as
In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.
In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.
In a steam engine, the link constitutes a
In a steam engine, the link constitutes a
