Q.1
To obviate axial thrust, following gear drive is used
Q.2
Which of the following is an example of a higher pair?
Q.3
The moment on the pulley which produces rotation is called
Q.4
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)
Q.5
The tendency of a body to resist change from rest or motion is known as
Q.6
The length of a simple pendulum which gives the same frequency as the compound pendulum, is
Q.7
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)
Q.8
Which of the following would constitute a link?
Q.9
When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.
Q.10
The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as
Q.11
The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.
Q.12
Hammer blow
Q.13
In a mechanism, the fixed instantaneous centers are those centers which
Q.14
The velocity of a body moving with simple harmonic motion is __________ at the mean position.
Q.15
When the crank is at the inner dead center, in a reciprocating steam engine, then the acceleration of the piston will be
Q.16
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be
Q.17
The instantaneous centers which vary with the configuration of mechanism are called
Q.18
In a radial cam, the follower moves
Q.19
When the sleeve of a Porter governor moves downwards, the governor speed
Q.20
Creep in belt drive is due to
Q.21
A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard?
Q.22
When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be
Q.23
When the sleeve of a Porter governor moves upwards, the governor speed
Q.24
In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is
Q.25
The stress induced in a body will be shear stress, when it is subjected to
Q.26
The example of spherical pair is
Q.27
In a simple harmonic motion, the velocity vector with respect to displacement vector
Q.28
The sense of Coriolis component is such that it
Q.29
In S.H.M., the velocity vector w.r.t. displacement vector
Q.30
For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve)
Q.31
The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)
Q.32
In vibration isolation system, if ω/ωn > 1, then the phase difference between the transmitted force and the disturbing force is
Q.33
When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will
Q.34
In a reciprocating engine, usually __________ of the reciprocating masses are balanced.
Q.35
The effort of a Porter governor is equal to (where c = Percentage increase in speed, m = Mass of ball, and M = Mass on the sleeve)
Q.36
In S.H.M., acceleration is proportional to
Q.37
The frictional torque transmitted by a cone clutch is same as that of
Q.38
For fluctuating loads, well suited bearing is
Q.39
The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.
Q.40
The maximum or minimum value of the swaying couple is
Q.41
Which one of the following is an exact straight line mechanism using lower pairs?
Q.42
If there are L number of links in a mechanism, then number of possible inversions is equal to
Q.43
Cam size depends upon
Q.44
The frictional torque transmitted by a disc or plate clutch is same as that of
Q.45
Which of the following has sliding motion?
Q.46
The type of gears used to connect two non parallel and non intersecting shafts is
Q.47
Longitudinal vibrations are said to occur when the particles of a body moves
Q.48
Torsional vibrations are said to occur when the particles of a body moves
Q.49
The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
Q.50
If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to
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